Preparation of Sr β-alumina ionic conductors and their ac impedance measurements

被引：1

作者：

Gang, H ^{[1
]}

Hayasaka, Y

Narushima, T

Goto, T

Hirai, T

Iguchi, Y

机构：

[1] Tohoku Univ, Grad Sch, Aoba Ku, Sendai, Miyagi 98077, Japan

[2] Tohoku Univ, Dept Met, Aoba Ku, Sendai, Miyagi 98077, Japan

[3] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 98077, Japan

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 1997年 / 105卷 / 12期

关键词：

beta-alumina; ionic conductor; electrical property; complex impedance; aluminate; strontium;

D O I：

10.2109/jcersj.105.1067

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：

beta-alumina type ionic conductors were synthesized in the SrO-MgO-Al2O3 system by a direct sintering method and their electrical conductivity was measured at 873 to 1373 K by an a.c. impedance method in order to apply the beta-alumina to solid electrolyte of a gas sensor at high temperatures. Sr beta-aluminas in a single phase were obtained in the composition range of SrO : MgO : Al2O3 =1 : 1 : 4.8-5.2. The bulk and grain boundary conductivities were separated from the total conductivity at SrO : MgO : Al2O3=1 : 1 : 4.8 and 1 : 1 : 5.0. The bulk conductivity of the Sr beta-alumina was around 6.7 x 10(-3) S.m(-1) at 1373 K.

引用

页码：1067 / 1071

页数：5

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