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Preparation and Characterization of Barium Titanate (BaTiO3) Nano-Powders by Pechini Sol-Gel Method
- Source :
- Materials and Manufacturing Processes. 27:1329-1333
- Publication Year :
- 2012
- Publisher :
- Informa UK Limited, 2012.
-
Abstract
- In this work, barium titanate (BaTiO3) powders were synthesized via two Pechini sol-gel processes using citric acid and polyethylene glycol-6000 as chelating agents. Attempts had been made to understand the thermal behavior of the polymeric intermediates with the help of thermogravimetry-differential scanning calorimetry (TG-DTG-DSC) thermograms. The structural coordination of as-prepared polymeric intermediates was investigated by Fourier transform infrared (FTIR) analysis. The phase and structure of the powders calcined at different temperatures were characterized by X-ray diffraction (XRD) and field emission scanning electron microscope (FE-SEM). Preparation of the polymeric precursors can influence the mechanism of the BaTiO3 synthesis. The formed intermediate phase BaCO3 appears in gel-2 system, and BaCO3 phase does not disappear at 720°C. The formed intermediate phases of gel-1 differ from that of gel-2. The intermediate phases of gel-1 are anatase TiO2 and rutile TiO2, and the intermediate phase Ba...
- Subjects :
- Anatase
Materials science
Mechanical Engineering
Inorganic chemistry
Industrial and Manufacturing Engineering
law.invention
Field emission microscopy
chemistry.chemical_compound
chemistry
Chemical engineering
Mechanics of Materials
law
Phase (matter)
Barium titanate
General Materials Science
Calcination
Barium carbonate
Fourier transform infrared spectroscopy
Sol-gel
Subjects
Details
- ISSN :
- 15322475 and 10426914
- Volume :
- 27
- Database :
- OpenAIRE
- Journal :
- Materials and Manufacturing Processes
- Accession number :
- edsair.doi...........d840fa9611b8b5615afda7bb82c50e8d