대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

ZnO 바리스터의 제조에서 분산제 영향 및 $Al_2O_3$ 첨가에 따른 미세구조 연구

Effects of Expanders in Manufacture and Microstructure of ZnO Varistor with $Al_2O_3$

  • 소진중 (한국전기연구소 전기재료연구부) ;
  • 한세원 (한국전기연구소 전기재료연구부) ;
  • 김형식 (한국전기연구소 전기재료연구부)
  • Soh, J.J. (Korea Electrotechnology Research Institute) ;
  • Han, S.W. (Korea Electrotechnology Research Institute) ;
  • Kim, H.S. (Korea Electrotechnology Research Institute)
  • 발행 : 1995.11.18
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초록

ZnO varistor with composition of ZnO(90wt%)-$Bi_2O_3$(3wt%)-$Sb_2O_3$(3.61wt%)-$CO_2O_3$(1.16wt%)-NiO (0.88wt%)-$MnO_2$(0.71wt%)-$Cr_2O_3$(0.93wt%) according to $Al_2O_3$ addtive was fabricated by sintering methods. The optimal densification were established for the processing conditions of 8000 rpm 190$^{\circ}C$ spray drying and 1200$^{\circ}C$ 2hrs sintering. Then here investigated how additive compotions and processing variables affected the electrical and the phesical properties of these ZnO varistors.

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