Sintering characteristics, electrical conductivity and thermal properties of La-doped ceria powders

被引：0
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作者：
Suda, Eisaku [1 ]
Pacaud, Bernard [1 ]
Mori, Masashi [2 ]
机构：
[1] R and D Department, ANAN KASEI Co. Ltd., 210-51, Ohgata, Anan, Tokushima 774-0022, Japan
[2] Materials Science Research Laboratory, Central Research Institute of Electric Power Industry, 2-6-1 Nagasaka, Yokosuka, Kanagawa 240-0196, Japan
来源：
Journal of Alloys and Compounds | 1600年 / 408-412卷
关键词：
Ce1-xLaxO2-δ (0 &le x &le 0.4) powders have been synthesized through a newly devised heat-treatment process in the co-precipitation method; and their sintering characteristics; electrical conductivity and thermal properties have been examined as potential electrolytes in the intermediate-temperature solid oxide fuel cells. Sintering characteristics of the samples have a tendency to decrease with increasing dopant content of La. A relative density ≥94% was obtained after heating at 1500 °C for 2 h for Ce0.9La0.1O1.95 and at 1600 °C for 10 h for Ce0.8La0.2O1.9. Electrical conductivies at 500 °C and thermal expansion coefficients (50-500 °C) in air for the sintered samples were 3.48 × 10 -3 S/cm and 11.5 × 10-6 °C-1 for Ce0.9La0.1O1.95; and 3.71 × 10 -3 S/cm and 11.7 × 10-6 °C-1 for Ce0.8La0.2O1.9. © 2005 Elsevier B.V. All rights reserved;
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摘要：
Conference article (CA)
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页码：1161 / 1164
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