Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Influence of $Tb_4O_7$-Addition on Electrical Properties of $Pr_6O_{11}$-Based ZnO Varistors

$Pr_6O_{11}$계 ZnO 바리스터의 전기적 특성에 $Tb_4O_7$이 미치는 영향

  • Published : 2005.07.07
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Abstract

The microstructure and electrical properties of $Pr_6O_{11}$-based ZnO varistors consisting of Zn-Pr-Co-Cr-Tb oxides were investigated with $Tb_4O_7$ content in the range of 0.25~1.0 mol%. The varistor ceramics exhibited very high densification in the range of 5.74~5.83g/$cm^3$ with increasing $Tb_4O_7$ content. Furthermore, the incorporation of $Tb_4O_7$ in varistor ceramics $Tb_4O_7$greatly increased All of the characteristic parameters. As a result, It was found that $Tb_4O_7$-added varistors are good for high voltage field.

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