Author: "Philippe Sciau" / Topic: 02 engineering and technology - Searchworks@Jio Institute Digital Library Search Results

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24 results on '"Philippe Sciau"'

1. Raman study of rusty oil spotted glaze produced in Linfen kilns (Shanxi province, AD 1115–1368)

Author: Philippe Sciau, Zhang Pei, Tian Wang, Jianfeng Zhu, Minli Wang, Jun Cao, Fen Wang, Clement Hole, Shi Pei, Shaanxi University of Science and Technology, Matériaux Multi-fonctionnels et Multi-échelles (CEMES-M3), Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), and Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Pseudobrookite, Materials science, [SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory, Kiln, microstructure, Nucleation, 02 engineering and technology, engineering.material, 010402 general chemistry, 01 natural sciences, hematite, symbols.namesake, General Materials Science, Linfen kilns, Spectroscopy, pseudobrookite, Metallurgy, Glaze, ε-Fe2O3, [CHIM.MATE]Chemical Sciences/Material chemistry, Hematite, 021001 nanoscience & nanotechnology, Microstructure, 0104 chemical sciences, Full width at half maximum, visual_art, visual_art.visual_art_medium, engineering, symbols, 0210 nano-technology, Raman spectroscopy
Abstract: International audience; The Linfen kiln complex, one of the most representative of Shanxi kilns, is famous for its oil spotted glazed ware production. In this work, micro-Raman spectroscopy was applied to analyze the nature of the rusty oil spot pattern of a bowl fragment from Linfen kilns. Crystals of polygonal shape found in the spots at the glaze surface and around bubbles in the cross-section of the glaze were identified as hematite. Their distribution in the glaze suggests that nucleation seeds and small crystals are carried toward the surface by the rise of bubbles during the heating step of the firing. Raman spectra combined with energy-dispersive spectrometry (EDS) measurements also suggest that Fe ions in hematite crystals are partially substituted, causing the variation of band position and full width at half maximum (FWHM) of the spectra. Dendritic ε-Fe2O3 was identified in brown areas of the black glaze, as well as pseudobrookite crystals of tens of microns in the cross-section of the glaze. The degree of the glaze polymerization (A500/A1000) was calculated at 1.85, indicating a firing temperature lower than 1300°C, consistent with the archaeological data.
Published: 2021
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2. Raman study of Ming porcelain dark spots: Probing Mn‐rich spinels

Author: Philippe Sciau, Tiequan Zhu, Ariane Pinto, J. Groenen, Bing Zhao, Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Sun Yat-Sen University [Guangzhou] (SYSU), Centre de recherche sur les civilisations de l'Asie Orientale (CRCAO), École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Collège de France (CdF (institution))-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Matériaux Multi-fonctionnels et Multi-échelles (CEMES-M3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Collège de France (CdF (institution))-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3)
Subjects: Materials science, Spinel, Analytical chemistry, 02 engineering and technology, engineering.material, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, chemistry.chemical_compound, symbols.namesake, chemistry, Jacobsite, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], engineering, symbols, General Materials Science, 0210 nano-technology, Raman spectroscopy, ComputingMilieux_MISCELLANEOUS, Spectroscopy, Hausmannite
Abstract: International audience
Published: 2019
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3. Morphological and structural study of crystals in black-to-brown glazes of Yaozhou ware (Song dynasty) using imaging and spectroscopic techniques

Author: Shi Pei, Clement Hole, Fen Wang, Philippe Sciau, Jianfeng Zhu, Zhang Pei, Tian Wang, Hongjie Luo, Ren Zhao, Shaanxi University of Science and Technology, Matériaux Multi-fonctionnels et Multi-échelles (CEMES-M3), Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), University of Shanghai [Shanghai], Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)
Subjects: Materials science, Kiln, Analytical chemistry, 02 engineering and technology, engineering.material, Brown glaze, 01 natural sciences, law.invention, symbols.namesake, chemistry.chemical_compound, Raman microscopy, Optical microscope, law, 0103 physical sciences, Materials Chemistry, Ceramic, Microstructure, Magnetite, 010302 applied physics, Glaze, Spinel, ε-Fe2O3, 021001 nanoscience & nanotechnology, chemistry, visual_art, Ceramics and Composites, symbols, engineering, visual_art.visual_art_medium, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Yaozhou kilns, 0210 nano-technology, Raman spectroscopy
Abstract: International audience; The Yaozhou kiln complex (Shaanxi, China) is a famous black-to-brown ceramic production center due to its significant volume of production, long manufacturing history (from Tang Dynasty to Yuan Dynasty) and variety of decorations. In this work, four representative types of black-to-brown ware from the Yaozhou kilns were selected to study the morphology, structure and distribution of the precipitated crystals in the glazes using a series of imaging and analytical techniques (optical microscopy, XRF, SEM-EDS, TEM-EDS, μRS and UV-vis-IR). The results show that the rare metastable ε-Fe 2 O 3 phase, already observed in typical sauce glaze, was also detected in other types of brown glaze decorations, such as light brown stripes on a darker background or irregular brown spots on a black background. Cross-section analyses also showed a three well-separated layered crystalline distribution in the glazes of lighter brown colors as it has been noted in glazes from Qilizhen kilns. Raman analyses revealed that the crystals contained in third layer are of varying nature: ε-Fe 2 O 3 in the sauce glaze and magnetite in the light brown stripes. The peak shifts and line broadenings observed in the Raman spectra of ε-Fe 2 O 3 crystals were also investigated. They are the result of Al, Ti and Mg substitutions, which were identified using TEM-EDS. Such ionic substitutions would stabilize the metastable ε-Fe 2 O 3 crystals by increasing the cationic disorder. In addition, Mg-, Ca-and Fe-rich spinel crystals were observed for the first time in a black glaze of Yaozhou wares.
Published: 2021
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4. Chromogenic mechanisms in blue-and-white porcelains

Author: Bing Zhao, Philippe Sciau, Tiequan Zhu, J. Groenen, Ariane Pinto, Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche sur les civilisations de l'Asie Orientale (CRCAO), École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Collège de France (CdF (institution))-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), École pratique des hautes études (EPHE), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Collège de France (CdF (institution))-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)
Subjects: 010302 applied physics, Elemental composition, Materials science, genetic structures, Chromogenic, Spinel, Glaze, Analytical chemistry, 02 engineering and technology, engineering.material, 021001 nanoscience & nanotechnology, 01 natural sciences, Underglaze, Pigment, visual_art, 0103 physical sciences, Materials Chemistry, Ceramics and Composites, engineering, visual_art.visual_art_medium, [CHIM]Chemical Sciences, 0210 nano-technology, Hue
Abstract: The blue underglaze decorations of Chinese blue-and-white porcelains are due to the use of a cobalt-based blue pigment. Nevertheless, for a same time period and production centre, wares can present wide colour variations in both hue and intensity. Fourteen Ming samples were investigated using colorimetry, Raman spectroscopy and SEM-EDS, in order to better understand the origin of these variations. The majority of the sherds dates back to the middle 15th- early 16th century. The chromogenic mechanism of the hue and intensity variations appears to be complex and multifactorial. Six main factors have been identified: the elemental composition of the pigment particles, in particular the Fe/Co ratio, the pigment spinel structure, the size as well as the distribution of the colouring particles, the environment of the pigment particles and the colour of the glaze.
Published: 2020
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5. Comparison of long-term natural aging to artificial aging in Duralumin

Author: Benoit Malard, Joël Douin, Magali Brunet, Bénédicte Warot-Fonrose, Nicolas Ratel-Ramond, Philippe Sciau, Christophe Deshayes, Matériaux Multi-fonctionnels et Multi-échelles (CEMES-M3), Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Interférométrie, In situ et Instrumentation pour la Microscopie Electronique (CEMES-I3EM), Physique de la Plasticité et Métallurgie (CEMES-PPM), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Université de Toulouse (UT), and ANR-17-EURE-0009,NanoX,Science et Ingénierie à l'Echelle Nano(2017)
Subjects: Materials science, Alloy, FOS: Physical sciences, chemistry.chemical_element, 02 engineering and technology, engineering.material, 01 natural sciences, Isothermal process, Aluminium, 0103 physical sciences, Ultimate tensile strength, Composite material, Duralumin, 010302 applied physics, Condensed Matter - Materials Science, Materials Science (cond-mat.mtrl-sci), Intergranular corrosion, Engineering (General). Civil engineering (General), 021001 nanoscience & nanotechnology, Microstructure, chemistry, engineering, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Grain boundary, TA1-2040, 0210 nano-technology
Abstract: The understanding of long-term aging of aeronautical materials, in particular aluminium alloys used in the fuselage and structure of aircraft is of extreme importance for airline fleets. In this work, a plate from an old aircraft (Breguet) was retrieved and studied in terms of microstructure and mechanical properties. A comparison was made between this naturally-aged alloy and a modern alloy on which different artificial aging conditions were applied. The old alloy exhibits a precipitation of θ-Al2Cu at grain boundaries and of Ω-Al2Cu on dispersoids. This non-expected nanostructure for an alloy in T4 state was attributed to the heat that the plate experienced during the aircraft cycles. However, it is shown that this aging is reversible (after a solution treatment). Moreover, the very long time of outdoors exposure seems to have caused intergranular corrosion causing the early failure during tensile tests on some of the specimens. The artificial aging (low temperature, 100°C for up to 10,000h) applied on the modern 2017A alloy did not allow to reproduce the nanostructure of the old plate, meaning that isothermal conditions for artificial aging might not be appropriate in this case.
Published: 2020
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6. Microscopic analysis of overglaze green pigment on Chinese famille rose porcelain from the Imperial Palace

Author: Jian Zhu, Yuanqiu Li, Guoding Song, Luoyuan Ji, Philippe Sciau, and Yingying Shan
Subjects: Rose (mathematics), Histology, media_common.quotation_subject, 030206 dentistry, 02 engineering and technology, Art, 021001 nanoscience & nanotechnology, Archaeology, 03 medical and health sciences, Medical Laboratory Technology, Pigment, 0302 clinical medicine, visual_art, visual_art.visual_art_medium, Anatomy, 0210 nano-technology, Instrumentation, media_common
Abstract: Famille rose porcelain made in the imperial workshop was one of the symbols of the highest manufacturing techniques in ancient China. It was very precious and only owned by the royals for a long time. Because of its complex making technology, overglaze green pigment painted on famille rose porcelain shows many variations. In this work, selected porcelain shards that were excavated at the Forbidden City were analyzed by using microscopy observation, micro-Raman spectroscopy, scanning electron microscopy, and energy dispersive X-ray spectrometer to obtain a deep understanding of overglaze green pigment technique on famille rose porcelain. The results revealed that four types of green pigment are used in the selected samples. With different recipes and combinative ways on green pigment and opaque white pigment, craftsmen can choose the using method of pigment to get the effect they want.
Published: 2020

7. Micro-structural study of Yaozhou celadons (Tang to Yuan Dynasty): probing crystalline and glassy phases

Author: Zhen Sang, Pei Zhang, Pu Chen, Fen Wang, Philippe Sciau, Minli Wang, Tian Wang, Shaanxi University of Science and Technology, Matériaux Multi-fonctionnels et Multi-échelles (CEMES-M3), Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)
Subjects: 010302 applied physics, Materials science, Metallurgy, Glaze, 02 engineering and technology, 021001 nanoscience & nanotechnology, Technological evolution, [SHS.MUSEO]Humanities and Social Sciences/Cultural heritage and museology, 01 natural sciences, Celadon, symbols.namesake, Green color, Yaozhou kiln, 0103 physical sciences, Glassy matrix, Raman spectroscopy, Materials Chemistry, Ceramics and Composites, symbols, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], 0210 nano-technology, Spectroscopy, Microstructure, Cultural heritage material
Abstract: International audience; The Yaozhou kiln complex is a representative production center of ancient northern China, famous for the celadon production. In this work, bubbles, glassy matrix and residual crystals of celadon glazes produced from the Tang to Yuan Dynasty were analyzed by using optical microscopy, Raman spectroscopy and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS). The results revealed that the Song, Jin and Yuan productions present bigger bubble and higher area ratios of the Si-O bending over stretching modes than the Tang and Wudai productions. This is consistent with firings at higher temperatures during Song, Jin and Yuan Dynasties. It is also in agreement with the historical studies, which revealed the change from wood-firing to coal-firing during Song Dynasty. The observation of calcium phosphate in Yaozhou productions indicated that the glaze ash had been used. No iron-based particle was identified by Raman spectroscopy in the glazes of all periods. The green color is certainly due to iron ion dispersed in the glassy matrix. Our study also confirmed no significant change in glaze raw materials used for Yaozhou productions from Tang to Yuan Dynasty.
Published: 2020
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8. Full-Field Transmission X-ray Microspectroscopy (FF-XANES) Applied to Cultural Heritage Materials: The Case of Ancient Ceramics

Author: Tian Wang and Philippe Sciau
Subjects: Materials science, 010401 analytical chemistry, InformationSystems_INFORMATIONSTORAGEANDRETRIEVAL, X-ray, 02 engineering and technology, Full field, 021001 nanoscience & nanotechnology, 01 natural sciences, Engineering physics, XANES, 0104 chemical sciences, Cultural heritage, Transmission (telecommunications), visual_art, visual_art.visual_art_medium, Ceramic, 0210 nano-technology, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries)
Published: 2019

9. Raman study of Yuan Qinghua porcelain: the highlighting of dendritic CoFe2O4crystals in blue decorations

Author: Magali Brunet, Tiequan Zhu, Philippe Sciau, Christophe Deshayes, and Tian Wang
Subjects: Materials science, Scanning electron microscope, Metallurgy, Spinel, Iron oxide, Analytical chemistry, chemistry.chemical_element, 02 engineering and technology, engineering.material, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Micro raman spectroscopy, chemistry.chemical_compound, symbols.namesake, chemistry, Cobalt ferrite, symbols, engineering, General Materials Science, 0210 nano-technology, Raman spectroscopy, Cobalt, Spectroscopy
Abstract: Raman spectroscopy and scanning electron microscopy equipped with energy dispersive spectrometer (SEM-EDS) were used to analyze the decors of the Yuan blue and white porcelains (Qinghua porcelains). SEM-EDS carried out on the dark spots of the blue decors revealed the presence of dendritic crystals of a mix cobalt iron oxide. The Raman spectra of these crystals are close to the standard spectrum of cobalt ferrite (CoFe2O4). Comparing the Fe/Co ratios obtained by EDS to the corresponding Raman spectra, we have identified two main types of spinel crystals: one type richer in iron and another type richer in cobalt. Both types of spinel cause the blackening of the blue decors. It is the first time that spinel crystals with a composition close to cobalt ferrite were observed as the main constituent of the dark spots in blue decors of Qinghua porcelains. Copyright © 2016 John Wiley & Sons, Ltd.
Published: 2016
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10. Raman spectroscopy analysis of terra sigillata: the yellow pigment of marbled sigillata

Author: J. Groenen, Philippe Sciau, Tian Wang, and Corinne Sanchez
Subjects: Pseudobrookite, Chemistry, Marbled meat, 010401 analytical chemistry, Analytical chemistry, 02 engineering and technology, Electron microprobe, engineering.material, 021001 nanoscience & nanotechnology, 01 natural sciences, Spectral line, 0104 chemical sciences, Pigment, symbols.namesake, visual_art, visual_art.visual_art_medium, symbols, engineering, General Materials Science, 0210 nano-technology, Raman spectroscopy, Absorption (electromagnetic radiation), Spectroscopy
Abstract: Raman spectroscopy combined with synchrotron radiation-based techniques and electron microprobe was used to study the yellow component of slips of marbled sigillata. Electron microprobe analysis emphasized on a significant corpus that the yellow component was well made from a titanium-rich clay preparation while X-ray absorption near edge structure investigation at Ti K-edge confirmed the massive presence of pseudobrookite (Fe2TiO5) in good agreement with previous study. Raman spectroscopy was correlated with X-ray absorption near edge structure results in order to extract the Raman spectra of pseudobrookite, which was compared with these ones of synthesized pseudobrookite powder reference. The investigation of a significant corpus (43 sherds) of marbled sigillata revealed that all samples exhibited similar Raman spectra in yellow zones attributable to the pseudobrookite structure. However, all spectra show the same features compared with the spectra of reference powder, that is, peak shifts and line broadenings, which could be related to Mg and/or Al substitutions in pseudobrookite crystals of marbled sigillata. The substitution plays a dual role in pseudobrookite structure: (1) stabilizes the structure through involving an increase of cationic disorder and (2) makes the color less dark and yellow, which could account for the nice yellow color of marbled sigillata. Copyright © 2016 John Wiley & Sons, Ltd.
Published: 2016
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11. Precipitation in original Duralumin A-U4G versus modern 2017A alloy

Author: Sébastien Joulié, Benoit Malard, Frédéric De Geuser, Christophe Deshayes, Joël Douin, Magali Brunet, Philippe Sciau, Nicolas Ratel-Ramond, Bénédicte Warot-Fonrose, Alexis Deschamps, Matériaux Multi-fonctionnels et Multi-échelles (CEMES-M3), Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT), Interférométrie, In situ et Instrumentation pour la Microscopie Electronique (CEMES-I3EM), Physique de la Plasticité et Métallurgie (CEMES-PPM), Science et Ingénierie des Matériaux et Procédés (SIMaP ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), ANR-17-EURE-0009,NanoX,Science et Ingénierie à l'Echelle Nano(2017), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut polytechnique de Grenoble (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), and Institut National Polytechnique de Toulouse - INPT (FRANCE)
Subjects: 010302 applied physics, STEM-HAADF, Materials science, Precipitation (chemistry), Matériaux, Alloy, Metallurgy, 02 engineering and technology, Precipitation, SAXS, engineering.material, Al–Cu–Mg–Si alloy, 021001 nanoscience & nanotechnology, 01 natural sciences, Artificial aging, 0103 physical sciences, engineering, Hardening (metallurgy), [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Quaternary alloy, General Materials Science, 0210 nano-technology, Duralumin
Abstract: International audience; Precipitation in Duralumin, a historic quaternary alloy of the type: Al–Cu–Mg–Si, was never fully studied nor observed by current electron microscopy techniques. This article presents the full characterization and comparison of two alloys: a Duralumin (A-U4G) from the 1950s collected on a vintage aircraft and its modern equivalent: a 2017A alloy. The as-received and peak-aging states were analysed with DSC, SAXS and TEM advanced techniques. It is shown that old Duralumin and modern 2017A present a similar nanoprecipitation in the as-received state and behave similarly upon artificial aging. As opposed to what has been reported in the past, three types of precipitates participating in hardening were found upon aging: θ’-Al2Cu, Q’(Q)-AlCuMgSi and Ω-Al2Cu.
Published: 2019
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12. Comparison of Aluminum Alloys from Aircraft of Four Nations Involved in the WWII Conflict Using Multiscale Analyses and Archival Study

Author: Toufa Ouissi, Magali Brunet, Jean-Marc Olivier, Gilles Collaveri, Philippe Sciau, Matériaux Multi-fonctionnels et Multi-échelles (CEMES-M3), Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Aerocherche, France, Amériques, Espagne – Sociétés, pouvoirs, acteurs (FRAMESPA), Université Toulouse - Jean Jaurès (UT2J)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse - Jean Jaurès (UT2J), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), and Université de Toulouse (UT)
Subjects: Hiduminium, mechanical characterization, Archeology, Engineering, 020209 energy, Materials Science (miscellaneous), chemistry.chemical_element, 02 engineering and technology, Conservation, [SHS.MUSEO]Humanities and Social Sciences/Cultural heritage and museology, Aluminium, 0202 electrical engineering, electronic engineering, information engineering, lcsh:CC1-960, Duralumin, aluminum alloys, military aircraft heritage, electron microscopy, business.industry, World War II, Metallurgy, 021001 nanoscience & nanotechnology, chemistry, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], lcsh:Archaeology, 0210 nano-technology, business, [SHS.HIST]Humanities and Social Sciences/History
Abstract: Aluminum alloys are very interesting witnesses of industrial and technical development. The first ever developed was Duralumin, a light metal with good mechanical properties. In the 1930s, the rise of nationalism stimulated research and development, generating various aluminum alloys. This work reports the comparison of two versions of aluminum alloys, which were found in collected parts of WWII crashed aircraft from four nations: a Messerschmitt Bf 109 (DE), a Dewoitine D.520 (FR), and a P-51 Mustang (USA) and an Avro Lancaster (United Kingdom). The first version of alloy with magnesium content below or equal to 1 wt.% and the second version with higher magnesium content (1.5 wt.%), were identified as respectively AlCuMg1, AlCuMg2 in Germany, Duralumin, Duralumin F.R. in France, Hiduminium DU Brand, Hiduminium 72 in the UK and 17S, 24S in the USA. This study uses a multiscale approach based on historical research complimented by laboratory analyses of materials directly collected on the crashed aircraft. It allows a comparison and a better knowledge of the alloys used in each nations: their chemical composition, designations, microstructure, and mechanical properties are investigated.
Published: 2019
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13. Micro-structural study of colored porcelains of Changsha kiln using imaging and spectroscopic techniques

Author: Jianmao Li, Tiequan Zhu, Wen Lu, Tian Wang, Magali Brunet, Philippe Sciau, Bailin Shen, Sun Yat-Sen University [Guangzhou] (SYSU), Matériaux Multi-fonctionnels et Multi-échelles (CEMES-M3), Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Shaanxi University of Science and Technology, Hunan Provincial Museum, Hunan Normal University (HNU), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), and Hunan Normal University
Subjects: Materials science, Scanning electron microscope, Analytical chemistry, chemistry.chemical_element, 02 engineering and technology, engineering.material, 010502 geochemistry & geophysics, 01 natural sciences, symbols.namesake, Materials Chemistry, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, Process Chemistry and Technology, Glaze, Cassiterite, Opacifier, Hematite, 021001 nanoscience & nanotechnology, Copper, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry, Colored, visual_art, Ceramics and Composites, visual_art.visual_art_medium, engineering, symbols, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], 0210 nano-technology, Raman spectroscopy
Abstract: Changsha kiln was an ancient factory from the Tang Dynasty (618–907 CE) to the Five Dynasties (907–960 CE), famous for its colored porcelain production. It was one of the pioneer sites to master the poly-color technique at high temperature. In this work, by using Energy Dispersive X-Ray Fluorescence (EDXRF), Raman spectroscopy and Scanning Electron Microscopy Energy Dispersive X-ray Spectrometer (SEM-EDS), the composition and structure of two of its emblematic colored glazes were studied. The results confirmed that the chromogenic elements of brown and green colored glazes are well iron and copper respectively. They also revealed a significant presence of hematite (α-Fe2O3) phase with dendritic shape close to the glaze surface and oddly a substantial amount of e-Fe2O3 phase at the body/glaze interface. It is the second type of ancient Chinese glaze in which the very rare and metastable iron(III) oxide polymorph was found. No Cu-based particle was identified in green glaze. The green color is certainly due to Cu2+ dispersed in the glassy matrix. Our study confirmed that Cassiterite (SnO2) was used as opacifier compound to obtain opaque green color.
Published: 2018
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14. X-ray diffraction and heterogeneous materials: An adaptive crystallography approach

Author: Catherine Dejoie, Pauline Martinetto, Jonathan P. Wright, Andrew N. Fitch, Nobumichi Tamura, Philippe Sciau, Pierre-Olivier Autran, Pierre Bordet, European Synchrotron Radiation Facility (ESRF), Matériaux, Rayonnements, Structure (NEEL - MRS), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Advanced Light Source [LBNL Berkeley] (ALS), Lawrence Berkeley National Laboratory [Berkeley] (LBNL), Matériaux, Rayonnements, Structure (MRS), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)
Subjects: Diffraction, Materials science, Fluids & Plasmas, Heterogeneous materials, Energy Engineering and Power Technology, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Mathematical Sciences, law.invention, Synchrotron, law, Dispersion (optics), Patrimoine culturel, Manufacturing process, Phases amorphes, General Engineering, Diffraction des rayons X, Matériaux hétérogènes, 021001 nanoscience & nanotechnology, Phases cristallines, 0104 chemical sciences, Amorphous solid, Complex materials, X-ray diffraction, Cultural heritage, Crystallography, Generic Health Relevance, Physical Sciences, X-ray crystallography, Amorphous phases, Crystalline phases, [PHYS.COND.CM-SCE]Physics [physics]/Condensed Matter [cond-mat]/Strongly Correlated Electrons [cond-mat.str-el], 0210 nano-technology
Abstract: © 2018 Académie des sciences Cultural heritage materials are often complex and heterogeneous, with a multi-scale architecture. Phases from a variety of crystalline forms co-exist in a wide grain size distribution, with each of these phases keeping in their structural arrangement a memory of the transformations that occurred to the material. Over the last two decades, X-ray diffraction has been applied successfully to the study of cultural heritage materials, with the use of synchrotron facilities offering new possibilities to describe the structural features of such complex materials. The long-range and/or short-range organization of the different crystallographic phases as well as their global position/dispersion in the material are closely related to the properties of the material (optical, mechanical…), its manufacturing process, functionality, or long-term conservation. In this paper, possible diffraction setups and data collection strategies are discussed in order to retrieve adequate data from crystalline and amorphous phases and to take into account single-crystal contributions.
Published: 2018
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15. The ID21 X-ray and infrared microscopy beamline at the ESRF: status and recent applications to artistic materials

Author: Emeline Pouyet, E. Gagliardini, Camille Rivard, Claude Cornu, Letizia Monico, Tiphaine Fabris, Vicente A. Solé, R. Baker, Ana Elena Pradas del Real, David Bugnazet, Emmanuel Papillon, Jérôme Kieffer, Jean Susini, Murielle Salomé, Yannick Vandenberghe, Nathalie Balcar, Giulia Veronesi, Laurent Cormier, Barbara Fayard, Marine Cotte, Tian Wang, Bernhard Hesse, Olivier Dargaud, Louisiane Verger, Cédric Cohen, Hiram Castillo-Michel, Ray Barrett, Koen Janssens, Wout De Nolf, Philippe Sciau, Juliette Langlois, Emmanuel Brun, European Synchrotron Radiation Facility (ESRF), Laboratoire d'Archéologie Moléculaire et Structurale (LAMS), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche et de restauration des musées de France (C2RMF), Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS), Istituto di Scienze e Tecnologie Molecolari = Institute of Molecular Science and Technologies (ISTM-CNR [Perugia - Milano]), University of Antwerp, Department of Chemistry, AXES Research Group, Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement [IRD] : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Cité de la céramique, Cite de la ceramique, Rayonnement Synchrotron et Recherche Médicale EA 7442, Université Grenoble, Novitom [Grenoble], Institut des Sciences de la Terre (ISTerre), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement [IRD] : UR219-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Laboratoire de Chimie et Biologie des Métaux (LCBM - UMR 5249), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), University of Antwerp (UA), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Propriétés des amorphes, liquides et minéraux [IMPMC] (IMPMC_PALM), Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement [IRD] : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement [IRD] : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture et de la Communication (MCC), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Université Fédérale Toulouse Midi-Pyrénées-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])
Subjects: Microscope, Infrared, Synchrotron radiation, Nanotechnology, 02 engineering and technology, 01 natural sciences, Analytical Chemistry, law.invention, chemistry.chemical_compound, Optics, law, 11. Sustainability, synchrotron, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Chrome yellow, Spectroscopy, business.industry, Chemistry, 010401 analytical chemistry, Resolution (electron density), cultural heritage, [SHS.ART]Humanities and Social Sciences/Art and art history, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Characterization (materials science), Beamline, 0210 nano-technology, Infrared microscopy, business
Abstract: International audience; The ID21 beamline (European Synchrotron Radiation facility, France) is a multi micro-analytical platform combining X-ray and infrared micro-probes, for characterization of elements, species, molecular groups and crystalline structures in complex materials. Applications are mainly in the fields of cultural heritage, life science, environmental and earth sciences, materials sciences. Here, we first present the status of instruments: (i) the scanning micro-spectroscopy end-station, operating from 2.0 to 9.2 keV, under vacuum and offering cryo conditions, for the acquisition of 2D micro X-ray fluorescence (μXRF) maps, single point micro X-ray Absorption Near Edge Structure (μXANES) spectra and speciation maps with sub-micrometric resolution; (ii) the XANES full-field end-station, operating in the same vacuum and energy conditions, for the acquisition of hyper-spectral radiographs of thin concentrated samples, resulting in speciation maps with micrometric resolution and millimetric field of view; (iii) the scanning micro-X-ray diffraction (μXRD)/μXRF end-station, operating at 8.5 keV, in air, for the acquisition of 2D crystalline phase maps, with micrometric resolution; and (iv) the scanning infrared microscope, operating in the mid-infrared range for the acquisition of molecular maps and some structural maps with micrometric resolution. Recent hardware and software developments are presented, as well as new protocols for improved sample preparation of thin sections. Secondly, a review of recent applications for the study of cultural heritage is presented, illustrated by various examples: determination of the origin of the color in blue Chinese porcelains and in brown Sèvres porcelains; detection of lead in ink on Herculaneum papyri; identification and degradation of modeling materials used by Auguste Rodin and of chrome yellow pigments used by Vincent van Gogh. Cryo capabilities are illustrated by the analysis of plants exposed to chromate solutions. These examples show the variety of materials analyzed, of questions tackled, and particularly the multiple advantages of the ID21 analytical platform for the analysis of ancient and artistic materials.
Published: 2017
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16. Natural aging on Al-Cu-Mg structural hardening alloys - Investigation of two historical duralumins for aeronautics

Author: Audrey Cochard, Julitte Huez, Joël Douin, Philippe Sciau, Sébastien Joulié, Luc Robbiola, Kailin Zhu, Magali Brunet, Matériaux Multi-fonctionnels et Multi-échelles (CEMES-M3), Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Ecole Nationale Supérieure des Ingénieurs en Arts Chimiques Et Technologiques (ENSIACET), INP - ENSIACET, Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Physique de la Plasticité et Métallurgie (CEMES-PPM), Travaux et recherches archéologiques sur les cultures, les espaces et les sociétés (TRACES), École des hautes études en sciences sociales (EHESS)-Université Toulouse - Jean Jaurès (UT2J)-Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS), RTRA - Science and Technologies for Aeronautics and SpacePRES / Région - MIPROPAL project, ANR-11-IDEX-0002,UNITI,Université Fédérale de Toulouse(2011), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Toulouse - Jean Jaurès - UT2J (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Ministère de la Culture et de la Communication (MCC)-École des hautes études en sciences sociales (EHESS)-Université Toulouse - Jean Jaurès (UT2J)-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Ecole nationale supérieure des ingénieurs en arts chimiques et technologiques (ENSIACET), Université de Toulouse (UT)-Université de Toulouse (UT), Université de Toulouse (UT), École des hautes études en sciences sociales (EHESS)-Université Toulouse - Jean Jaurès (UT2J), and Université de Toulouse (UT)-Université de Toulouse (UT)-Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Aging, Materials science, Mechanical characterization, Matériaux, Natural aging, 02 engineering and technology, Precipitation, 01 natural sciences, Science des matériaux, [SPI.MAT]Engineering Sciences [physics]/Materials, Precipitation hardening, Archéologie, 0103 physical sciences, Ultimate tensile strength, Electron microscopy, General Materials Science, 010302 applied physics, Mechanical Engineering, Metallurgy, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Aluminum alloys, Mechanics of Materials, Hardening (metallurgy), Mécanique des matériaux, 0210 nano-technology
Abstract: International audience; This article presents the metallurgic study of sixty years old structural hardening Al-Cu-Mg alloys recovered from a double-deck aircraft Breguet 765. This study aims to characterize and understand the evolution of alloys over very long periods thanks to an approach coupling materials characterization and archives researches. The focus is made on two ancient age hardening Al-Cu alloys: A-U4G and A-U4G1, whose compositions are close to the international designations 2017A and 2024 respectively. Multi-scale structural investigation was carry out and mechanical properties were extracted. It is shown that despite natural aging during long periods, these alloys exhibit mechanical properties (yield strength, ultimate tensile strength and rupture strain) close to the expected original specifications.
Published: 2017
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17. The nature of marbled Terra Sigillata slips: a combined μXRF and μXRD investigation

Author: Philippe Goudeau, Apurva Mehta, Nobumichi Tamura, Samuel M. Webb, Philippe Sciau, and Yoanna Leon
Subjects: Pseudobrookite, Chemistry(all), Operating Procedures, Materials Treatment, Mineralogy, 02 engineering and technology, Electron microprobe, engineering.material, 010402 general chemistry, Surfaces and Interfaces, Thin Films, 01 natural sciences, Slip (ceramics), Optical and Electronic Materials, Materials Science(all), Ceramic colorants, Nanotechnology, General Materials Science, Ceramic, Chemistry, Physics, Metallurgy, General Chemistry, Condensed Matter Physics, 021001 nanoscience & nanotechnology, Characterization and Evaluation of Materials, 0104 chemical sciences, visual_art, engineering, visual_art.visual_art_medium, Pottery, 0210 nano-technology
Abstract: In addition to the red terra sigillata production, the largest Gallic workshop (La Graufesenque) made a special type of terra sigillata, called “marbled” by the archaeologists. Produced exclusively at this site, this pottery is characterized by a surface finish made of a mixture of yellow and red slips. Because the two slips are intimately mixed, it is difficult to obtain the precise composition of one of the two constituents without contamination from the other. In order to obtain very precise correlation at the appropriate scale between the color aspect and the elemental and mineralogical phase distributions in the slip, combined electron microprobe, X-ray micro spectroscopies and micro diffraction on cross-sectional samples were performed. The aim of this study is to discover how potters were able to produce this unique type of terra sigillata and especially this particular slip of an intense yellow color. Results show that the yellow component of marbled sigillata was made from a titanium-rich clay preparation. The color is due to the formation of a pseudobrookite (TiFe2O5) phase in the yellow part of the slip, the main characteristics of that structure being considered nowadays as essential for the fabrication of stable yellow ceramic pigments. Its physical properties such as high refractive indices and a melting point higher than that of most silicates widely used as ceramic colorants are indeed determinant for this kind of application. Finally, the red parts have a similar composition (elementary and mineralogical) to the one of standard red slip.
Published: 2010
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18. Emerging Approaches in Synchrotron Studies of Materials from Cultural and Natural History Collections

Author: Ina Reiche, Federica Marone, Philippe Sciau, Uwe Bergmann, Aurélien Gourrier, Sylvain Bernard, Loïc Bertrand, Mathieu Thoury, Institut photonique d'analyse non-destructive européen des matériaux anciens (IPANEMA), Muséum national d'Histoire naturelle (MNHN)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement [IRD] : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), The Swiss Light Source (SLS) (SLS-PSI), Paul Scherrer Institute (PSI), Laboratoire d'Archéologie Moléculaire et Structurale (LAMS), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Rathgen-Forschungslabor, Staatliche Museen zu Berlin-Stiftung Preußischer KulturbesitzBerlin, Delft University of Technology (TU Delft), Laboratoire Interdisciplinaire de Physique [Saint Martin d’Hères] (LIPhy), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), European Synchrotron Radiation Facility (ESRF), Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Stanford PULSE Center, SLAC National Accelerator Laboratory (SLAC), Stanford University-Stanford University, University of Zurich, Bertrand, Loïc, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), and Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory, 610 Medicine & health, 1600 General Chemistry, Nanotechnology, 02 engineering and technology, 010402 general chemistry, [SHS.MUSEO]Humanities and Social Sciences/Cultural heritage and museology, 01 natural sciences, Archaeometry, law.invention, Imaging, Synchrotron, 170 Ethics, law, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, Spectroscopy, Fourier Transform Infrared, 11. Sustainability, Genetic algorithm, Humans, 10237 Institute of Biomedical Engineering, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Organic Chemicals, History, Ancient, [PHYS.PHYS]Physics [physics]/Physics [physics], Chemical speciation, Chemistry, 010401 analytical chemistry, Paleontology, General Chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Cultural heritage, High flux, X-Ray Absorption Spectroscopy, Archaeology, Inorganic materials, 0210 nano-technology, Synchrotrons
Abstract: International audience; Synchrotrons have provided significant methods and instruments to study ancient materials from cultural and natural heritages. New ways to visualise (surfacic or volumic) morphologies are developed on the basis of elemental, density and refraction contrasts. They now apply to a wide range of materials, from historic artefacts to paleontological specimens. The tunability of synchrotron beams owing to the high flux and high spectral resolution of photon sources is at the origin of the main chemical speciation capabilities of synchrotron-based techniques. Although, until recently, photon-based speciation was mainly applicable to inorganic materials, novel developments based, for instance, on STXM and deep UV photoluminescence bring new opportunities to study speciation in organic and hybrid materials, such as soaps and organometallics, at a submicrometric spatial resolution over large fields of view. Structural methods are also continuously improved and increasingly applied to hierarchically structured materials for which organisation results either from biological or manufacturing processes. High-definition (spectral) imaging appears as the main driving force of the current trend for new synchrotron techniques for research on cultural and natural heritage materials.
Published: 2016
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19. Nano-crystallization in decorative layers of Greek and Roman ceramics

Author: Philippe Sciau, Matériaux Multi-fonctionnels et Multi-échelles (CEMES-M3), Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)
Subjects: [PHYS]Physics [physics], Materials science, Thin layers, 010401 analytical chemistry, Oxide, Nanotechnology, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Nanocrystalline material, 0104 chemical sciences, law.invention, Crystal, chemistry.chemical_compound, Nanocrystal, chemistry, law, visual_art, visual_art.visual_art_medium, Lustre (mineralogy), Ceramic, Crystallization, 0210 nano-technology
Abstract: cited By 1; International audience; Besides metallic nanocrystals of lusterware (Chapter "Lustre and Nanostructures-Ancient Technologies Revisited"), other nanoscale crystals can be found in ancient ceramics and more specifically in their decorative layers or coatings. These crystals can play a major role in the physical properties of these thin layers or can be an indicator of the manufacturing process. These thin layers are formed during firing and result from physicochemical reactions among the diverse compounds of raw preparation. In general, the firing conditions are not suitable for obtaining large crystals and many of the formed phases have crystal sizes of a few tens nanometres. Over a long period of time and throughout the world, the variety of raw preparations and firing conditions used are so diverse that it is not conceivable to give here an exhaustive rundown. In this chapter, we will focus our attention on some decorative layers of Greek and Roman potteries for which oxide nanocrystals play a key role regarding the optical and/or mechanical properties. These decorations were obtained from clay preparations and their physical properties result directly from the nanocrystalline size and the behaviour of clay minerals.
Published: 2016
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20. Synchrotron radiation-based multi-analytical approach for studying underglaze color: The microstructure of Chinese Qinghua blue decors (Ming dynasty)

Author: B. Fayard, Tian Wang, Philippe Sciau, Z.Y. Feng, Tiequan Zhu, Marine Cotte, Murielle Salomé, Emeline Pouyet, W. De Nolf, Matériaux Multi-fonctionnels et Multi-échelles (CEMES-M3), Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Sun Yat-Sen University [Guangzhou] (SYSU), Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), European Synchrotron Radiation Facility (ESRF), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Analytical chemistry, Synchrotron radiation, 02 engineering and technology, 01 natural sciences, Biochemistry, Analytical Chemistry, Heterogeneous distributions, ion transport, Methodological approach, X ray fluorescence, iron, Microstructure, Spectroscopy, [PHYS]Physics [physics], analytic method, quantitative analysis, Chemistry, Glaze, Transition metals, particle size, 021001 nanoscience & nanotechnology, cobalt, physical parameters, Coal, priority journal, manganese, Qinghua porcelain, 0210 nano-technology, synchrotron radiation based technique, X ray diffraction, X-ray fluorescence, ceramics, Article, Transition metal elements, micro X ray fluorescence analysis, physical chemistry, Environmental Chemistry, controlled study, intermethod comparison, Hue, Ions, concentration (parameters), 010401 analytical chemistry, XANES, 0104 chemical sciences, Underglaze, Ion distributions, color, Partial substitution, Analytical approach, archeology, aluminum, Porcelain, Particle, oxygen, Synchrotrons
Abstract: cited By 7; International audience; In this paper, we develop a methodological approach combining macro-X-ray fluorescence and synchrotron radiation-based techniques (μXRF, full-field XANES and μXRD) to determine the composition and microstructure of underglaze decors of Qinghua porcelains (Ming dynasty). Various transition metal elements (Fe, Mn, Co) are present in the blue decoration of these ceramics and the approach proposed allows for establishing the feature of each. Thus it shows that Fe ions are distributed homogeneously over the whole glaze without any significant difference in blue and white parts. They do not play a significant role in the color. In contrast, Co ions exhibit a heterogeneous distribution with CoAl2O4 particles close to the body/glaze interphase. These particles play a key role in the blue color and, the hue variations seem in greater part to link to their density and repartition. Co dispersed in the glassy matrix is also bivalent and mainly in tetragonal coordination, leading also to a blue color. Mn ion distribution is similar to the one of Co but without presenting local high concentrations associated to Mn based particles. Mn affects the darkness of the color and for the sample without CoAl2O4 particle; it is the main color contribution. The presence of CoAl2O4 crystals was confirmed by μXRD, which revealed, in addition, a variation of cell parameters certainly linking to a Co partial substitution.
Published: 2016
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21. Ceramics in art and archaeology: a review of the materials science aspects

Author: Philippe Sciau, Philippe Goudeau, Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Institut Pprime (PPRIME), Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), and ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers
Subjects: History, Complex materials, Complex system, Gain information, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Analytical method, Input and outputs, Decomposition (computer science), Ceramic materials, Ceramic, Composition (language), Structure (mathematical logic), [PHYS]Physics [physics], Sub-systems, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Solid State and Materials, Archaeology, Field (geography), 0104 chemical sciences, Electronic, Optical and Magnetic Materials, Topical review, visual_art, visual_art.visual_art_medium, Material composition and structure, 0210 nano-technology
Abstract: cited By 7; International audience; Analytical techniques developed in the field of materials science are now widely applied to objects of art and archaeology to gain information about the material composition and structure and hence to understand the way of manufacturing artefacts. Reciprocally, ancient artefacts studies show potential important contribution in the materials science field. This topical review will cover all these input and output aspects between materials science and ancient artefacts through the study of the first ceramics made by men e.g. potteries. To study these heterogeneous and complex materials, an approach based on the decomposition into sub systems of materials and the applications of traditional and novel analytical methods to scan the different scales of the material is not only mandatory but also innovative.
Published: 2015
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22. TEM characterization of the fine scale microstructure of a Roman ferrous nail

Author: Francis Dabosi, Philippe Sciau, O. Henry, Joël Douin, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Toulouse - Jean Jaurès - UT2J (FRANCE), Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT), Travaux et recherches archéologiques sur les cultures, les espaces et les sociétés (TRACES), École des hautes études en sciences sociales (EHESS)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université de Toulouse (UT)-Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Ministère de la Culture et de la Communication (MCC)-École des hautes études en sciences sociales (EHESS)-Université Toulouse - Jean Jaurès (UT2J)-Centre National de la Recherche Scientifique (CNRS), and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Subjects: Materials science, Matériaux, 02 engineering and technology, 01 natural sciences, Carbide, Ferrous, Imaging, Ferrite (iron), 0103 physical sciences, Microscopy, Instrumentation, Spectroscopy, [PHYS]Physics [physics], 010302 applied physics, Metallurgy, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Microstructure, humanities, TEM characterization, Electronic, Optical and Magnetic Materials, Transmission electron microscopy, Physical Sciences, 0210 nano-technology, Roman ferrous nail
Abstract: International audience; This paper describes the microstructure of a Roman ferrous nail through its observation by transmission electron microscopy. The morphologies of pearlitic colonies and ferritic grains are detailed and the relationship between pearlitic colonies and ferrite in Roman nails is explicitly demonstrated for the first time. Observations also confirm the presence of dislocations in ferritic grains and attest to the existence of very small carbide precipitates that have not been pointed out previously in standard archaeometric studies.
Published: 2010
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23. Thermal expansion, polarization and phase diagrams of Ba1-yBi2y3Ti1-xZrxO3 and Ba1-yLayTi1-y/4O3 compounds

Author: Mario Maglione, Annie Simon, M. V. Gorev, Madona Boulos, V. S. Bondarev, Igor N. Flerov, Philippe Sciau, Sophie Guillemet-Fritsch, Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences [Moscow] (RAS), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Université de Toulouse (UT), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Russian academy of sciences (RUSSIA), Centre National de la Recherche Scientifique - CNRS (FRANCE), Siberian Federal University (RUSSIA), and Université de Bordeaux 1 (FRANCE)
Subjects: Ceramics, Thermal properties, Materials science, Solid solution, Matériaux, Analytical chemistry, Thermodynamics, 02 engineering and technology, Dielectric, 01 natural sciences, Temperature effects, Thermal expansion, Zirconate, [SPI.MAT]Engineering Sciences [physics]/Materials, Root mean square, Thermal expansion coefficient, Polarization, 0103 physical sciences, Phase diagrams, General Materials Science, Zirconates, Ceramic, 010306 general physics, Phase diagram, [CHIM.MATE]Chemical Sciences/Material chemistry, Atmospheric temperature range, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Titanate, Dielectric properties, visual_art, visual_art.visual_art_medium, Phase transitions and Curie point, Titanates, 0210 nano-technology
Abstract: International audience; The thermal expansion properties of the ceramic compositions Ba1-yLayTi1-y/4O3 (y = 0.0, 0.026, 0.036, 0.054) and Ba1-yBi2y/3Ti1-xZrxO3 (y = 0.10; x = 0.0, 0.04, 0.05, 0.10, 0.15) were determined in the temperature range 120-700 K. We report the temperature-dependent measurements of the strain, thermal expansion coefficient and the magnitude of root mean square polarization. The results obtained are discussed together with the data on the structure and dielectric properties.
Published: 2009
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24. Keggin's ion structural modification and expansion of dodecatungstophosphoric acid hexahydrate induced by temperature treatment In situ X-ray powder diffraction and Raman investigations

Author: Ubavka B. Mioč, Radovan Dimitrijević, Ph. Colomban, Philippe Sciau, Aleksandar Kremenović, A. Spasojević-de Biré, Laboratoire Structures, Propriétés et Modélisation des solides (SPMS), Institut de Chimie du CNRS (INC)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Department of Crystallography [University of Belgrade], Faculty of mining and geology, University of Belgrade [Belgrade]-University of Belgrade [Belgrade], Laboratoire de structures et propriétés de l'état solide - UMR 8008 (LSPES), Université de Lille, Sciences et Technologies-Centre National de la Recherche Scientifique (CNRS), Faculty of Physical Chemistry, University of Belgrade [Belgrade], Laboratoire de Dynamique Interactions et Réactivité (LADIR), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 02 engineering and technology, Crystal lattices, Hydrated protons, 010402 general chemistry, 01 natural sciences, Heat treatment, Thermal expansion, Negative ions, Tungsten, Partial reduction, [SPI.MAT]Engineering Sciences [physics]/Materials, symbols.namesake, Crystal microstructure, General Materials Science, Keggins anions, Valence (chemistry), X ray powder diffraction, Chemistry, Rietveld refinement, Interplanar spacings, General Chemistry, Thermoanalysis, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 0104 chemical sciences, Bond length, Crystallography, Phase transitions, Raman spectroscopy, symbols, Crystallite, Phase equilibria, 0210 nano-technology, Oxonium ion, Molecular structure, Powder diffraction, Phosphoric acid
Abstract: The changes in lattice and molecular structure of the dodecatungstophosphoric acid hexahydrate (WPA-6) induced by the temperature treatment between 244 and 373 K, were studied in situ by X-ray powder diffraction and Raman spectroscopy. The increase in temperature was followed with the slight modifications of Keggin's anion, expansion of the unit cell and an abrupt change in the crystallite microstructure of WPA-6 what was monitored by the Rietveld and Warren-Averbach methods. Those two discontinuities in the thermal expansion of 4 0 0 interplanar spacing, observed at about 320 and 340 K, are result of the non-convergent reversible phase transition, produced by partial reduction and oxidation of the tungsten, known as an ion with mixed valence. The extraordinary compression of P-Oa bond length [1.61(1) angstroms at 298 K and 1.44(2) angstroms at 373 K], broadening and splitting of V1(P-Oa) bond with the increase in temperature, the abrupt change of crystallite dimension and the strain at 338 K, indicate a modification in the charge distribution followed with the partial reduction of W6+ into W5+ ions (i.e. 'heteropoly blue' formation). The partial reduction is closely related to the change in a dynamic equilibrium between different proton species and hydrated proton entities, such as oxonium H3O+, dioxonium H5O2+, triaquaoxonium H7O3+, etc.
Published: 2000
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24 results on '"Philippe Sciau"'

1. Raman study of rusty oil spotted glaze produced in Linfen kilns (Shanxi province, AD 1115–1368)

2. Raman study of Ming porcelain dark spots: Probing Mn‐rich spinels

3. Morphological and structural study of crystals in black-to-brown glazes of Yaozhou ware (Song dynasty) using imaging and spectroscopic techniques

4. Chromogenic mechanisms in blue-and-white porcelains

5. Comparison of long-term natural aging to artificial aging in Duralumin

6. Microscopic analysis of overglaze green pigment on Chinese famille rose porcelain from the Imperial Palace

7. Micro-structural study of Yaozhou celadons (Tang to Yuan Dynasty): probing crystalline and glassy phases

8. Full-Field Transmission X-ray Microspectroscopy (FF-XANES) Applied to Cultural Heritage Materials: The Case of Ancient Ceramics

9. Raman study of Yuan Qinghua porcelain: the highlighting of dendritic CoFe2O4crystals in blue decorations

10. Raman spectroscopy analysis of terra sigillata: the yellow pigment of marbled sigillata

11. Precipitation in original Duralumin A-U4G versus modern 2017A alloy

12. Comparison of Aluminum Alloys from Aircraft of Four Nations Involved in the WWII Conflict Using Multiscale Analyses and Archival Study

13. Micro-structural study of colored porcelains of Changsha kiln using imaging and spectroscopic techniques

14. X-ray diffraction and heterogeneous materials: An adaptive crystallography approach

15. The ID21 X-ray and infrared microscopy beamline at the ESRF: status and recent applications to artistic materials

16. Natural aging on Al-Cu-Mg structural hardening alloys - Investigation of two historical duralumins for aeronautics

17. The nature of marbled Terra Sigillata slips: a combined μXRF and μXRD investigation

18. Emerging Approaches in Synchrotron Studies of Materials from Cultural and Natural History Collections

19. Nano-crystallization in decorative layers of Greek and Roman ceramics

20. Synchrotron radiation-based multi-analytical approach for studying underglaze color: The microstructure of Chinese Qinghua blue decors (Ming dynasty)

21. Ceramics in art and archaeology: a review of the materials science aspects

22. TEM characterization of the fine scale microstructure of a Roman ferrous nail

23. Thermal expansion, polarization and phase diagrams of Ba1-yBi2y3Ti1-xZrxO3 and Ba1-yLayTi1-y/4O3 compounds

24. Keggin's ion structural modification and expansion of dodecatungstophosphoric acid hexahydrate induced by temperature treatment In situ X-ray powder diffraction and Raman investigations

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24 results on '"Philippe Sciau"'

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