Sintering behaviour and ionic conductivity of yttria-doped ceria

被引：57

作者：

Vanherle, J

Horita, T

Kawada, T

Sakai, N

Yokokawa, H

Dokiya, M

机构：

[1] Natl. Inst. of Mat. and Chem. Res., Tsukuba Science City, 305 Ibaraki

[2] Ecole Polytechnique de Lausanne, Dpt. Chemistry, Institute of Physical Chemistry II

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1996年 / 16卷 / 09期

关键词：

D O I：

10.1016/0955-2219(96)00012-X

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Highly sinterable yttria-doped ceria powder (YO1.5)(x) (CeO2)(1-x) (x = 0.1-0.33) was fabricated by an optimized coprecipitation route. Compacted bodes could be sintered to impermeability at 1200 degrees C and near full density at 1300 degrees C, among the lowest temperatures reported for doped ceria densification, Ceria diffusion is important above 1400 degrees C. Excellent conduction properties were observed: high ionic conductivity (6.5 S m(-1) at 750 degrees C for Ce0.8Y0.2O1.9), low activation energy (0.7 eV) and vanishing grain-boundary resistance. (C) 1996 Elsevier Science Limited.

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收藏

页码：961 / 973

页数：13

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