Electrical-field induced nonlinear conductive behavior in dense zirconia ceramic

被引：48

作者：

Gao, Yan ^{[1
]}

Liu, Fangzhou ^{[2
]}

Liu, Dianguang ^{[2
]}

Liu, Jinling ^{[1
]}

Wang, Yiguang ^{[2
]}

An, Linan ^{[3
]}

机构：

[1] Southwest Jiaotong Univ, Sch Mech & Engn, State Key Lab Tract Power, Chengdu 610031, Sichuan, Peoples R China

[2] Northwestern Polytech Univ, Sch Mat Sci & Engn, Xian 710072, Shaanxi, Peoples R China

[3] Univ Cent Florida, Dept Mat Sci & Engn, Adv Mat Proc & Anal Ctr, Orlando, FL 32816 USA

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2017年 / 33卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Flash sintering; Non-linear conductivity; Zirconia; Electric field effect; MICROSTRUCTURAL DEVELOPMENT; THERMAL RUNAWAY; DOPED ZIRCONIA; FLASH; DENSIFICATION; GROWTH; CERIA;

D O I：

10.1016/j.jmst.2017.03.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of the applied electric field on the conductive behavior of zirconia ceramics is studied by measuring its initial current-voltage curve at various temperatures. The results show that when the field strength is higher than the threshold for flash-sintering, the curves exhibit a nonlinear behavior by having an additional current on top of the linear current according to Ohms law. Analyzing its transport behavior reveals that the additional current density is due to the extra oxygen vacancies induced by the electric field. The formation rate of the extra vacancies and associated current was related to the field strength. (c) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

引用

页码：897 / 900

页数：4

共 23 条

[1] Field assisted and flash sintering of alumina and its relationship to conductivity and MgO-doping [J].