THERMOCHEMICAL STABILITY AND NONSTOICHIOMETRY OF YTTRIA-STABILIZED BISMUTH OXIDE SOLID-SOLUTIONS

被引：39

作者：

KRUIDHOF, H

DEVRIES, KJ

BURGGRAAF, AJ

机构：

[1] Laboratory for Inorganic Chemistry, Materials Science and Catalysis, Department of Chemical Technology, 7500 AE Enschede

来源：

SOLID STATE IONICS | 1990年 / 37卷 / 2-3期

关键词：

D O I：

10.1016/0167-2738(90)90246-N

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 thermochemical stability of fast oxygen ion conducting yttria stabilized bismuthoxide (YSB) solid solutions containing 22.0-32.5 mol% of yttria was investigated. It was shown that in the temperature range between 650-740 C the stabilized cubic δ-phase containing less than 31.8 mol% of yttria is not stable during long term annealing treatments (≥ 500 hours). During annealing at 650 C a sluggish transformation from the cubic to hexagonal phase appears, while above 740 C this hexagonal phase is converted very fast into the cubic phase again. It was shown, that the oxygen content of YSB solid solutions is a function of temperature and oxygen partial pressure. © 1990.

引用

页码：213 / 215

页数：3

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