Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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A Study on the Initial Stage of Sintering and the Grain Growth of ZnO in ZnO-Bi2O3 System

ZnO-Bi2O3계의 소결초기단계와 입자성장에 관한 연구

  • 성건용 (한국과학기술원 재료공학과) ;
  • 강을손 (한국과학기술원 재료공학과) ;
  • 김종희 (한국과학기술원 재료공학과)
  • Published : 1989.04.01
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Abstract

The sintering behavior and grain growth of ZnO in 99.0mol% ZnO-1.0mol% Bi2O3 which are the basic compositions of ZnO varistor were studied. The microstructrual observation confirmed that the final sintered density was mainly determined at the initial stage of sintering, i.e. grain rearrangement and grain growth which were induced by the penetration of eutectic melts formed at eutectic temperature(74$0^{\circ}C$). But when the liquid penetration was terminated, the grain growth did not promote further densification. Activation energy of the grain growth of ZnO in the system of 99.0mol% ZnO-1.0mol% Bi2O3 was 44.8$\pm$1.8Kcal/mol.

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References

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