Sintering characteristics and thermal expansion behavior of Li-doped lanthanum chromite perovskites depending upon preparation method and Sr doping

被引：16
|
作者：
Suda, E
Pacaud, B
Seguelong, T
Takeda, Y
机构：
[1] R&D Dept, Higashinada Ku, Kobe, Hyogo 6580013, Japan
[2] Rhodia Elect & Catalysis ZI, F-17041 La Rochelle 1, France
[3] Mie Univ, Fac Engn, Dept Chem, Tsu, Mie 5148507, Japan
来源：
SOLID STATE IONICS | 2002年 / 151卷 / 1-4期
关键词：
SOFC; separator; lanthanum chromite; sintering; thermal expansion;
D O I：
10.1016/S0167-2738(02)00533-7
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The sintering characteristics and thermal expansion behaviors of Li-doped lanthanum chromite perovskites (La1-xSrx Cr1-y LiO3; x=0, 0.1, 0.2; y=0.01, 0.02, 0.05) synthesized by the Pechini method have been investigated. The solubility limit of Li into the perovskites decreases with increasing Sr content. Li doping to the perovskites improved sintering characteristics; however, the Pechini method did not bring the effect expected on the improvement of the sintering. The thermal expansion coefficient (TEC of the LaCrO3 perovskites measured in air was independent of Li doping in this composition range. The TECs in the reduced atmosphere showed lower values than those in air. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：335 / 341
页数：7
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