Flash sintering preparation and electrical properties of ZnO-Bi2O3-M (M = Cr2O3, MnO2 or Co2O3) varistor ceramics

被引：33
|
作者：
Cui, Bing [1 ,2 ]
Niu, Jingpeng [1 ,2 ]
Peng, Pai [1 ,2 ]
Shi, Liyi [3 ]
Du, Sanming [4 ]
Liu, Juan [1 ,2 ]
Xu, Dong [1 ,2 ]
机构：
[1] Anhui Univ Technol, Minist Educ, Key Lab Green Fabricat & Surface Technol Adv Met, Maanshan 243002, Peoples R China
[2] Anhui Univ Technol, Key Lab Met Emiss Reduct & Resources Recycling, Minist Educ, Maanshan 243002, Peoples R China
[3] Shanghai Univ, Res Ctr Nano Sci & Technol, Shanghai 200444, Peoples R China
[4] Henan Univ Sci & Technol, Natl United Engn Lab Adv Bearing Tribol, Luoyang 471023, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2020年 / 46卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Flash sintering; ZnO varistor ceramics; Additives; Electrical properties; DIELECTRIC-PROPERTIES; THERMAL RUNAWAY; ZINC-OXIDE; ZNO; MICROSTRUCTURE; TEMPERATURE; ACHIEVE; FIELD;
D O I：
10.1016/j.ceramint.2020.03.018
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：
The dense bulk ZnO-Bi2O3 based varistor ceramics were obtained via flash sintering at a low temperature. The effect of different additives such as Cr2O3, MnO2 and Co2O3 on flash sintering onset temperature and incubation time was investigated. All samples were fabricated under a constant heating rate with a DC electric field of 300 V/cm. At the same time, the onset temperature of all samples was below 750 degrees C. ZnO-Bi2O3-Cr2O3 was fabricated at the lowest temperature of 704 degrees C and the shortest incubation time among the specimens by a constant heating rate flash sintering. In addition, the nonlinear current-voltage and dielectric properties were analyzed. ZnO-Bi2O3-Co2O3 varistor ceramics showed the highest nonlinear coefficient of 39.5 and the lowest leakage current of 2.64 mu A. Therefore, flash sintering is a promising method for preparation of ZnO varistor ceramics efficiently.
引用
收藏
页码：14913 / 14918
页数：6
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