Chemical expansion, crystal structural stability, and oxygen permeability of SrCo0.4Fe0.6-xAlxO3-δ oxides

被引：40

作者：

Dong, Xueliang ^{[1
]}

Xu, Zhi ^{[1
]}

Chang, Xianfeng ^{[1
]}

Zhang, Chun ^{[1
]}

Jin, Wanqin ^{[1
]}

机构：

[1] Nanjing Univ Technol, Coll Chem & Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2007年 / 90卷 / 12期

关键词：

D O I：

10.1111/j.1551-2916.2007.02053.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：

A series of SrCo0.4Fe0.6-xAlxO3-delta (x=0, 0.1, 0.2, 0.3) perovskite oxides were synthesized using a gel-combustion method. The doping of Al ions and its effect on the crystal structural stability, chemical expansion, and oxygen permeability of SrCo0.4Fe0.6-xAlxO3-delta have been investigated. The introduction of Al ions suppressed the oxygen loss and reduced the chemical-induced expansion at high temperature. The oxygen permeability of SrCo0.4Fe0.6-xAlxO3-delta membranes decreased with increasing Al content. When x=0.2, the order-disorder phase transition of SrCo0.4Fe0.6O3-delta in nitrogen atmosphere was suppressed, and oxygen permeation was not deleteriously affected.

引用

页码：3923 / 3929

页数：7

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