Bi4Ti3O12 modified low voltage ZnO-based varistors: microstructure, electrical properties and aging characteristics

被引：3

作者：

Zhou, Huanfu ^{[1
]}

Guo, Ruli ^{[1
,2
]}

Chu, Dongjin ^{[2
]}

Chang, Baocheng ^{[2
]}

Qin, Yuandong ^{[2
]}

Fang, Liang ^{[1
]}

机构：

[1] Guilin Univ Technol, Guangxi Sci Expt Ctr Min Met & Environm, Key Lab New Proc Technol Nonferrous Met & Mat, Coll Mat Sci & Engn,Minist Educ, Guilin 541004, Peoples R China

[2] Guangxi New Future Informat Ind Co Ltd, Beihai 536000, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2013年 / 24卷 / 12期

关键词：

ZINC-OXIDE VARISTORS; CERAMICS;

D O I：

10.1007/s10854-013-1513-7

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The effects of Bi4Ti3O12 addition on the microstructure, electrical properties and aging characteristics of ZnO-based varistors were investigated. The addition of Bi4Ti3O12 can reduce the formation of Zn2TiO4 spinel phase and promote the growth of ZnO grain. Bi4Ti3O12 doped ZnO-based varistors sintered at 1,130 A degrees C possessed excellent performance of I (L) = 2.9 mu A, E (1mA) = 29.7 V/mm, alpha = 30.2, and good surge absorption capability with %a-E-3 (1mA) = -3.5 % for 500 A 8/20 mu s impulse current. In addition, the varistors exhibited the most stable accelerated aging characteristics with %a-E-3 (1mA) = -0.3 % for DC accelerated aging stress of 125 A degrees C/7 h. These results revealed that Bi4Ti3O12 addition is highly beneficial to attain enhanced varistor properties of ZnO ceramics.

引用

页码：4987 / 4992

页数：6

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