The Effects of Cu Dopant on the Microstructure and Non-ohmic Electrical Properties of ZnO Varistors

被引：0

作者：

Fan, Jiwei ^{[1
]}

Li, Xiaopeng ^{[1
]}

Zhang, Zhenguo ^{[1
]}

Jiao, Zhiqiang ^{[1
]}

Liu, Xiangyang ^{[1
]}

Zhang, Wenjing ^{[1
]}

Poosimma, Poonsuk ^{[2
]}

Freer, Robert ^{[2
]}

机构：

[1] Zhongyuan Univ Technol, Sch Mat & Chem Engn, Zhengzhou 450007, Peoples R China

[2] Univ Manchester, Inst Sci & Technol, Ctr Mat Sci, Manchester M1 7HS, Lancs, England

来源：

MATERIALS FOR ENVIRONMENTAL PROTECTION AND ENERGY APPLICATION, PTS 1 AND 2 | 2012年 / 343-344卷

关键词：

ZnO varistor; Cu doping; Microstructure; Non-ohmic Electrical Characteristics; ZINC-OXIDE VARISTORS; DOPED ZNO; NONLINEARITY; CONDUCTIVITY; HYDROGEN;

D O I：

10.4028/www.scientific.net/AMR.343-344.160

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The doping effects of Cu on the microstructure and non-ohmic electrical properties of ZnO varistors were studied. Addition of Cu2O can enhance the ZnO grain growth during sintering. The SEM and EDS results revealed that the added Cu mainly distributed in the grain boundary and spinel phases of ZnO varistors. The Cu2O addition increased the both of grain and grain boundary resistances. However it decreased the non-ohmic electrical characteristics of ZnO varistors, which is a good agreement with similar findings on Ag2O additions, but contrasts to the reports of good non-ohmic electrical property which found on binary Cu doped ZnO varistors.

引用

页码：160 / +

页数：2

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