Processing and electrical properties of alkaline earth-doped lanthanum gallate

被引：171

作者：

Stevenson, JW

Armstrong, TR

McCready, DE

Pederson, IR

Weber, WJ

机构：

[1] Pac. Northwest National Laboratory, Mat. and Chem. Sciences Department, Richland

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1997年 / 144卷 / 10期

关键词：

D O I：

10.1149/1.1838057

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Alkaline earth-doped lanthanum gallate powders were prepared by glycine/nitrate combustion synthesis. Compacts of powders synthesized under fuel-rich conditions were sintered to densities greater than 97% of theoretical. Appropriate doping with Sr or Ba on the A-site of the perovskite structure, and Mg on the B-site, resulted in oxygen ion conductivity higher than that of yttria-stabilized zirconia (YSZ), and high ionic transference numbers. Doping with Ca and Mg resulted in lower conductivity than YSZ. Thermal expansion coefficients of the doped gallates were higher than that of YSZ.

引用

页码：3613 / 3620

页数：8

共 21 条

[1]

[Anonymous], 1983, NONSTOICHIOMETRY DIF

[2] ZRO2-Y2O3 - ELECTRICAL-CONDUCTIVITY OF SOME FULLY AND PARTIALLY STABILIZED SINGLE GRAINS [J].