Nickel oxide doping effects on electrical characteristics and microstructural phases of ZnO varistors with low residual voltage ratio

被引：17
|
作者：
He, Jinliang [1 ]
Long, Wangcheng [1 ]
Hu, Jun [1 ]
Liu, Jun [1 ]
机构：
[1] Tsinghua Univ, Dept Elect Engn, State Key Lab Power Syst, Beijing 100084, Peoples R China
来源：
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2011年 / 119卷 / 1385期
关键词：
ZnO varistor; Residual voltage ratio; XRD; Chrombismite; Electrical characteristics; IMPROVEMENT; NONLINEARITY;
D O I：
10.2109/jcersj2.119.43
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 effects of nickel oxide (Ni2O3) additives on electrical characteristics and microstructural phases of ZnO varistors with low residual voltage ratio are studied. The breakdown electrical fields increase remarkably with the amount of the doped nickel oxide increased. The minimum of the residual voltage ratios of the samples reaches 1.39. While the amount of the doped nickel oxide is more than 2 mol %, a new phase of chrombismite Bi16CrO27 is observed from X-ray diffraction (XRD) and scanning electron microscopy (SEM). The delta-Bi2O3 phase decreases and the BiO2-x phase increases correspondingly. In addition, the capacitance versus voltage (C-V) characteristics of the samples are measured and analyzed. (c) 2011 The Ceramic Society of Japan. All rights reserved.
引用
收藏
页码：43 / 47
页数：5
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