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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Properties of ZnO varistor using secondary seed grains

2차 seed grain을 사용한 ZnO varistor의 특성 연구

  • 김형주 (한양대학교 재료공학과) ;
  • 마재평 (한양대학교 재료공학과) ;
  • 백수현 (한양대학교 재료공학과)
  • Published : 1989.06.01
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Abstract

We fabricated primary and secondary seed grains. Primary seed grains having larger grain size were obtained under the conditions that were 2.0m/o BaCO$_3$ and 10 hours sintering. The amount of primary seed grain to yield the largest secondary seed grains were choosed as 3 w/o and we fabricated the low voltage varistors which were joined the low voltage-oriented ZnO varistor system made by conventional method with the secondary seed grains. As a result, ZnO varistor showed appoximately 10V/mm of nonlinear resistance and 15-22 of nonlinear exponent.

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