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Preparation and Characterization of Sm1-xSrxCoO3 Ceramics by the Gelcasting Process

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Abstract:

Perovskite Sm1-xSrxCoO3 ceramics have been successfully prepared by gelcasting from oxides and carbonate powders, which were characterized by sintering the gels cast from a suspension of low-solubility metallic oxide precursors and organic monomers. The porosity, pore size, microstructure and electrical conductivity of the obtained Sm1-xSrxCoO3 ceramics were also investigated. It has been shown that single Sm1-xSrxCoO3 perovskite phase forms at a relatively low calcination temperature of 1000°C. Especially, porous Sm1-xSrxCoO3 ceramics with homogeneous microstructure can be obtained by controlling sintering process of the gelcasts. In addition, the Sm1-xSrxCoO3 ceramics show good electrical conductivity, which can meet the demand for solid oxide fuel cell cathode application.

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Periodical:

Key Engineering Materials (Volumes 336-338)

Pages:

444-447

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.336-338.444

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Online since:

April 2007

Authors:

Ji Gui Cheng, Ping Shi, Hong Hai Zhong, Bu Mei Wang

Keywords:

Electrical Conductivity, Gelcasting, Porosity, Sm1-xSrxCoO3 Ceramic, Solid Oxide Fuel Cell (SOFC)

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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