1. Superconducting cryo-magnets processed by Spark Plasma Sintering and Texturing
- Author
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J. Noudem, L. Dupont, P. Bernstein, R. Retoux, G. Chevallier, C. Estournès, K. Berger, M. Higuchi, M. Muralidhar, M. Murakami, Laboratoire de cristallographie et sciences des matériaux ( CRISMAT ), Centre National de la Recherche Scientifique ( CNRS ) -Ecole Nationale Supérieure d'Ingénieurs de Caen ( ENSICAEN ), Normandie Université ( NU ) -Normandie Université ( NU ) -Université de Caen Normandie ( UNICAEN ), Normandie Université ( NU ), Centre interuniversitaire de recherche et d'ingenierie des matériaux ( CIRIMAT ), Institut National Polytechnique [Toulouse] ( INP ) -Université Paul Sabatier - Toulouse 3 ( UPS ) -Centre National de la Recherche Scientifique ( CNRS ), Groupe de Recherche en Energie Electrique de Nancy ( GREEN ), Université de Lorraine ( UL ), Superconducting Materials Laboratory, Shibaura Institute of Technology, Centre National de la Recherche Scientifique - CNRS (FRANCE), Ecole Nationale Supérieure d'Ingénieurs de Caen - ENSICAEN (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Shibaura Institute of Technology - SIT (JAPAN), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Caen Basse-Normandie (FRANCE), Cao, Giacomo, Estournès, Claude, Orrù, Roberto, Laboratoire de cristallographie et sciences des matériaux (CRISMAT), École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC), 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), Groupe de Recherche en Energie Electrique de Nancy (GREEN), Université de Lorraine (UL), Giacomo Cao, Claude Estournes, Javier Garay, Roberto Orru, Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), 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), and Institut National Polytechnique de Toulouse - INPT (FRANCE)
- Subjects
Materials science ,Matériaux ,MgB2 ,Bi2212 ,[ PHYS.COND.CM-MS ] Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] ,Spark plasma sintering ,Levitation force ,superconducting cryo-magnets ,02 engineering and technology ,Superconductor material ,01 natural sciences ,Texturing ,chemistry.chemical_compound ,Spark Plasma Texturing (SPT) ,Trapped field ,Tungsten carbide ,0103 physical sciences ,[ PHYS.COND.CM-S ] Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con] ,Magnesium diboride ,Lamellar structure ,Ceramic ,Composite material ,010306 general physics ,Spark Plasma Sintering ,Superconductivity ,SPS in air ,Cryo-magnets ,[SPI.NRJ]Engineering Sciences [physics]/Electric power ,Cryo-magnet ,[CHIM.MATE]Chemical Sciences/Material chemistry ,Spark plasma sintering (SPS) ,021001 nanoscience & nanotechnology ,Microstructure ,Critical current density ,Amorphous solid ,[PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con] ,[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism ,chemistry ,visual_art ,[ CHIM.MATE ] Chemical Sciences/Material chemistry ,Spark plasma texturing (SPT) ,visual_art.visual_art_medium ,[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] ,0210 nano-technology - Abstract
International audience; In this paper, two main superconducting compounds have been studied: • The first study was focused on the preparation of magnesium diboride (MgB2) cryo-magnets by Spark Plasma Sintering (SPS). The role of the starting powder on the superconducting properties of MgB2 is investigated. Different sets of bulk MgB2 material were processed from: (i) a commercial available powder, (ii) a mixture of Mg metal and amorphous B using a single-step solid-state reaction process and (iii) a mixture of amorphous boron coated with carbon and Mg metal. The samples were prepared in tungsten carbide moulds varying the processing conditions by the modulation of the temperature, the dwell time and the applied pressure. The microstructures of the samples were investigated by SEM and TEM and correlated to their superconducting properties. The best sample was prepared at 850°C, 20 min and 100 MPa. At 20 K its critical current density (Jc) was 500 kA/cm2. Here in, we demonstrate that MgB2 is an excellent candidate to make cryo-magnets, maintaining 3.9 T at 20 K at the surface of a 20 mm diameter disk.• The SPS was modified with the aim of obtaining textured lamellar compounds with Bi2Ca2Sr2CuO8 superconductor ceramics. The new process is referred to as “Spark Plasma Texturing” (SPT). During SPT, the bulk material can freely deform itself. As a result, the formation of an inter-grain preferential crystallographic orientation is favoured. The superconducting properties were measured and discussed in correlation with textured microstructure analysis.
- Published
- 2018
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