Influence of intensive milling on the microstructure and electrical properties of ZnO-Bi2O3-based varistors

被引：20

作者：

Zhu, Jianfeng ^{[1
]}

Qi, Guoquan ^{[1
]}

Wang, Lili ^{[1
]}

Yang, Haibo ^{[1
]}

Wang, Fen ^{[1
]}

机构：

[1] Shaanxi Univ Sci & Technol, Minist Educ, Key Lab Auxiliary Chem & Technol Chem Ind, Xian 710021, Shaanxi, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2012年 / 38卷

关键词：

Milling; Electrical properties; ZnO; Varistors; ZINC-OXIDE VARISTORS;

D O I：

10.1016/j.ceramint.2011.05.040

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：

ZnO varistors were synthesized using Pr6O11 doped ZnO-Bi2O3 system as raw materials by ball milling. The effects of intensive milling on the microstructure and electrical properties of the varistors were investigated in detail. The results show the intensive milling decreases the particle size and distribution of the powders for ZnO varistors. The optimal samples obtained from the powders milled for 10 h have average crystalline grain size of about 4 mu m and the gradient voltage of 565 V/mm, the leakage current of 0.45 mu A, and the nonlinear coefficient of 75. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：S463 / S466

页数：4

共 6 条

[1]

Aren M.L., 2009, CERAM INT, V35, P3313

[2] Analysis of ZnO varistors prepared by the sol-gel method [J].