Response characteristics of YSZ oxygen sensor with a Ag•YSZ composite thin film electrode

被引：0
|
作者：
Usami, T [1 ]
Akao, N [1 ]
Hara, N [1 ]
Sugimoto, K [1 ]
机构：
[1] Tohoku Univ, Grad Sch Engn, Dept Met, Sendai, Miyagi 9808579, Japan
来源：
JOURNAL OF THE JAPAN INSTITUTE OF METALS | 2001年 / 65卷 / 10期
关键词：
oxygen sensor; yttria stabilized zirconia; Ag center dot YSZ composite thin film; ion-beam-sputter deposition; Nernstian response; response time;
D O I：
10.2320/jinstmet1952.65.10_916
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
An oxygen sensor with a Ag . YSZ (ZrO2-8 mol%Y2O3) composite thin film electrode deposited on a YSZ disk by ion-beam-sputtering (IBS) was developed. Compositions of the thin films tested were Ag-10 mol%YSZ and Ag-30 mol% YSZ. The performance of the oxygen sensors was examined at temperatures between 573 and 673 K. The mechanism of electrode reactions was inferred on the basis of the results obtained by an AC impedance method. The oxygen sensor with the Ag . YSZ composite thin film electrodes showed the Nernstian response in 1.0% oxygen at temperatures higher than 593 K. The lowest temperature for the Nernstian response was lower by 25 K than that reported for the sensor with a Ag thin film electrode. After a change in oxygen concentration, the response time of the sensor with the Ag-10 mol%YSZ electrode was shorter than that with the Ag-30 mol%YSZ electrode.
引用
收藏
页码：916 / 921
页数：6
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