Chemical preparation and properties of high-field zinc oxide varistors

被引：43

作者：

Dosch, R. G. ^{[1
]}

Tuttle, B. A. ^{[1
]}

Brooks, R. A. ^{[1
]}

机构：

[1] Sandia Natl Labs, Albuquerque, NM 87185 USA

来源：

JOURNAL OF MATERIALS RESEARCH | 1986年 / 1卷 / 01期

关键词：

This work was performed at Sandia National Laboratories; supported by the U. S. Department of Energy under Contract No. DE-AC04-76DP00789;

D O I：

10.1557/JMR.1986.0090

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Chemical preparation methods were developed for high-field ZnO varistors which used precipitation techniques to prepare precursor powders. Varistors were made by sintering uniaxially pressed pellets in the range of 675 degrees-740 degrees C in air. Properties of these varistors included electric fields (E) in the 10-100 kV/cm range at current densities (J) of 5 A/cm(2), nonlinearity coefficients (alpha) greater than 30 for 2.5 <= J <= 5.0 A/cm(2), and densities in the range of 65%-99% of theoretical depending both on sintering temperature and composition.

引用

页码：90 / 99

页数：10

共 21 条

[1] MICROSTRUCTURE, ELECTRICAL-PROPERTIES, AND FAILURE PREDICTION IN LOW CLAMPING VOLTAGE ZINC-OXIDE VARISTORS [J].