Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effects of Particle Size of Alumina on Densification Behaviors of Alumina-Talc System During Liquid-Phase Sintering

알루미나-활석계의 액상소결에서 알루미나 입자크기가 치밀화 거동에 미치는 영향

  • 김호양 (경북대학교 무기재료공학과) ;
  • 이정아 (경북대학교 무기재료공학과) ;
  • 김정주 (경북대학교 무기재료공학과)
  • Published : 1998.12.01
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Abstract

Effects of particle size of alumina on densification behavior during liquid-phase sintering of alumina-talc system were investigated with emphasis on particle rearrangement process. In the case of using coarse alu-mina powder densiication of specimens was rapidly accelerated after formation of liquid phase due to easy particle rearrangement process with addition of talc and increase of sintering temperature. On the contrary when fine alumina powder was used premature densification of alumina matrix region formed before for-mation of liquid phase rigid skeleton structure and then it seemed to inhibit rearrangement process during crease of sintering temperature. As results the densification of specimens using coarse alumina powder was higher than that of the case of using fine one.

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References

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