Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effects of Penetration Direction on Contact Damage and Microstructure in ${Al_2}{O_3}$/Al Composite Fabricated by Reactive Metal Penetration

반응금속 침투법으로 제조된 ${Al_2}{O_3}$/Al 복합체에서 침투방향성이 미세구조 및 접촉손상에 미치는 영향

  • 백운규 (한양대학교 공과대학 응용화학공학부 세라믹공학과) ;
  • 정연길 (창원대학교 공과대학 세라믹공학과)
  • Published : 2000.09.01
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Abstract

반응금속 침투법으로 제조한 $Al_2$O$_3$/Al 복합체의 파괴특성과 손상 내구성을 침투방향성에 따라 관찰하였으며, 복합체는 $Al_2$O$_3$단일상보다 향상된 파괴인성과 Al 단일상보다 높은 경도값을 나타내었다. Vickers 압입법을 사용한 복합체의 손상형태에서는 침투방향에 따른 각각의 미세구조에 의해 상이한 특성을 나타내었으며, 헤르찌안 압입법을 사용한 복합체의 손상거동은 $Al_2$O$_3$과 Al의 중간거동을 나타내었다. 헤르찌안 압입 후 강도저하시험으로 복합체가 갖는 우수한 결함저항성을 관찰할 수 있었으며, 높은 헤르찌안 하중에서는 복합체의 강도저하 특성이 복합체의 미세구조에 의존함을 관찰할 수 있었다. 이와 함께 복합체에서의 반응금속 침투방향성, 미세구조 그리고 손상 내구성 사이 상호연관성에 대해 논의하였다.

Keywords

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