Analysis of ZnO varistors prepared by the sol-gel method

Sheng Yuan Chu; Tser Min Yan; Shen Li Chen

doi:10.1016/S0272-8842(00)00012-2

Analysis of ZnO varistors prepared by the sol-gel method

Sheng Yuan Chu, Tser Min Yan, Shen Li Chen

Research output: Contribution to journal › Article › peer-review

70 Citations (Scopus)

Abstract

A new sol-gel processing method to prepare ZnO-based varistor powders, using inexpensive zinc acetate dihydrate, ethylene glycol, n-propyl alcohol and glycerol as starting materials, is presented. Compared to conventional oxide-mixing techniques, this method yields powders with a more homogeneous distribution of dopants; the sintering temperature could be lowered by about 200 K to 1000 °C and the grain size is much smaller which proves very helpful for achieving high breakdown strength. Microstructure and electrical characteristics of the sintered powders were investigated.

Original language	English
Pages (from-to)	733-737
Number of pages	5
Journal	Ceramics International
Volume	26
Issue number	7
DOIs	https://doi.org/10.1016/S0272-8842(00)00012-2
Publication status	Published - 2000 Aug 3

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/S0272-8842(00)00012-2

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AU - Chen, Shen Li

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AB - A new sol-gel processing method to prepare ZnO-based varistor powders, using inexpensive zinc acetate dihydrate, ethylene glycol, n-propyl alcohol and glycerol as starting materials, is presented. Compared to conventional oxide-mixing techniques, this method yields powders with a more homogeneous distribution of dopants; the sintering temperature could be lowered by about 200 K to 1000 °C and the grain size is much smaller which proves very helpful for achieving high breakdown strength. Microstructure and electrical characteristics of the sintered powders were investigated.

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JF - Ceramics International

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Analysis of ZnO varistors prepared by the sol-gel method

Abstract

All Science Journal Classification (ASJC) codes

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