Effect of the applied electric field on the microstructure and electrical properties of flash-sintered 3YSZ ceramics

被引：26
|
作者：
Liu, Dianguang [1 ]
Liu, Jinling [2 ]
Gao, Yan [2 ]
Liu, Fangzhou [1 ]
Li, Kai [1 ]
Xia, Junbo [1 ]
Wang, Yiguang [1 ]
An, Linan [3 ]
机构：
[1] Northwestern Polytech Univ, Sci & Technol Thermostruct Composite Mat Lab, Xian 710072, Shaanxi, Peoples R China
[2] Southwest Jiaotong Univ, Sch Mech & Engn, State Key Lab Tract Power, Chengdu 610031, Sichuan, Peoples R China
[3] Univ Cent Florida, Dept Mat Sci & Engn, Adv Mat Proc & Anal Ctr, Orlando, FL 32816 USA
来源：
CERAMICS INTERNATIONAL | 2016年 / 42卷 / 16期
基金：
中国国家自然科学基金;
关键词：
Sintering; Defects; Electrical properties; ZrO2; NANOGRAIN ZIRCONIA; DOPED ZIRCONIA; GRAIN-GROWTH;
D O I：
10.1016/j.ceramint.2016.09.065
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：
In this study, the effect of an applied DC electric field on the microstructure and electrical properties of flash-sintered 3YSZ ceramics was investigated. The results showed that the field applied for flash sintering had an evident effect on the microstructure and electrical properties of the resulting samples. The grain size and the conductivity of the flash-sintered samples both increased with the applied field. Since the activation energy is the same for both kinds of samples, the increase in conductivity may be caused by the increase in defect density. The results also showed that the estimated grain boundary thickness and the specific conductivity increased with the applied field, which could be accounted for by a space-charge layer model.
引用
收藏
页码：19066 / 19070
页数：5
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