Oxygen permeability of perovskites in the system SrCoO3-delta-SrTiO3

被引：69

作者：

Kharton, VV

Li, SB

Kovalevsky, AV

Naumovich, EN

机构：

来源：

SOLID STATE IONICS | 1997年 / 96卷 / 3-4期

关键词：

oxygen permeability; perovskites; cobaltite; strontium titanate; thermal expansion;

D O I：

10.1016/S0167-2738(96)00594-2

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：

Existence of two concentration ranges of solid solutions with cubic perovskite-like structure has been ascertained in the SrCoO3-delta-SrTiO3 system. It has been found that an increase in titanium concentration in SrCo1-xTixO3-delta leads to a decrease In electrical conductivity and oxygen permeability of cubic solid solutions. Oxygen transfer through ceramics SrCo(Ti)O3-delta has been shown to be limited by the process of oxygen exchange with gas phase. Application of platinum layers on the surface of cobaltites-titanates results in substantial buildup of oxygen permeability. Thermal expansion coefficients of the above oxide materials lie in the range 11-21 x 10(-6) K-1.

引用

页码：141 / 151

页数：11

共 26 条

[11] INFLUENCE OF ORDER-DISORDER TRANSITIONS ON OXYGEN PERMEABILITY THROUGH SELECTED NONSTOICHIOMETRIC PEROVSKITE-TYPE OXIDES [J].