Low temperature sintering of La(Ca)CrO3 prepared by an autoignition process

Ultrafine powders of calcium substituted lanthanum chromite with average particle size of 0.57 micron, synthesised by a simple process of autoignition of citrate-nitrate gels, can be sintered at relatively low temperatures (1200-1250 C) compared to those normally reported. The sintered samples show...

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Bibliographic Details
Published in:Materials letters 2000-09, Vol.45 (3-4), p.162-166
Main Authors: CHAKRABORTY, A, BASU, R. N, MAITI, H. S
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Electrotechnical and electronic ceramics
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Fuel cells
Technical ceramics
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Summary:Ultrafine powders of calcium substituted lanthanum chromite with average particle size of 0.57 micron, synthesised by a simple process of autoignition of citrate-nitrate gels, can be sintered at relatively low temperatures (1200-1250 C) compared to those normally reported. The sintered samples show adequate electrical conductivity and thermal expansion behaviour at 1000 C for use as an interconnect material for solid oxide fuel cells. 25 refs.
ISSN:0167-577X
1873-4979
DOI:10.1016/S0167-577X(00)00098-7