Microwave Sintering of ZnO Varistor Ceramics

Abstract

Abstract: ZnO nanopowders prepared by the Sol-Gel method were sintered by microwave. The microstructure of the material was analysed by XRD and SEM. The I-V properties
of varistor were measured by a stabilized dc power source. Compared with the conventional sintering, microwave sintering promptes grain growth and shortenes sintering time.
When grain sizes are the same, the temperature of microwave sintering can be lower than that of conventional sinering. Microwave sintering has the ability to enhance the density of
ZnO varistor ceramic and to obtain good electric propertises. Hence, microwave sintering is a newly effective method for processing ZnO varistor ceramic.

Key words: microwave sintering, ZnO varistor, microstructure, electric properties

CLC Number:

TN304

KANG Xue-Ya,CHANG Ai-Min,HAN Ying,WANG Tian-Diao,TAO Ming-De,TU Ming-Jin. Microwave Sintering of ZnO Varistor Ceramics[J]. Journal of Inorganic Materials.

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Microwave Sintering of ZnO Varistor Ceramics

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