Study on the electrical and physical characteristics of ZnO varistor according to the sintering temperature

Author

Sung-Man Kang ; Jae-Bok Lee ; Seung-Kyu Choi ; Mun-No Ju ; Ho-dong Kim ; Jun-Young Jung ; Shenderey, S.V. ; Hyun-Hak Jung ; Kyong-Jin Jung

Author_Institution

Korea Electrotechnol. Res. Inst., Changwon, South Korea

fYear

2014

fDate

11-18 Oct. 2014

Firstpage

1143

Lastpage

1146

Abstract

This study investigates the electrical and physical characteristics of ZnO varistor according to the sintering temperature range from 600 °C to 1300 °C. Specimens are prepared with bismuth, antimony and other metal oxides. The composition of ZnO varistor is fixed only one batch. And the microstructure of varistor samples is observed by a FE-SEM & EDS. according to the maximum sintering temperature, the microstructure of ZnO varistors is changed involving both electrical and thermal property changes. Namely, the specimen which has sintering temperature range from 950 °C to 1150 °C shows better electrical and thermal properties than the others. Furthermore, Dielectric constant and nonlinear coefficients are strongly influenced by maximum densification temperature.

Keywords

II-VI semiconductors; X-ray chemical analysis; scanning electron microscopy; sintering; varistors; wide band gap semiconductors; zinc compounds; EDS; FE-SEM; ZnO; dielectric constant; electrical characteristics; electrical property; metal oxides; nonlinear coefficients; physical characteristics; sintering temperature; temperature 600 degC to 1300 degC; thermal property; varistor sample microstructure; Atmospheric measurements; Lightning; Particle measurements; Printing; Switches; Temperature measurement; Zinc oxide; Microstructure; Sintering temperature; Thermal conductivity; ZnO varistor;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightning Protection (ICLP), 2014 International Conference o

Conference_Location

Shanghai

Type

conf

DOI

10.1109/ICLP.2014.6973298

Filename

6973298