Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Mechanical Properties of ZTA Composites Fabricated by Reaction Bonding

반응결합에 의해 제조된 ZTA복합체의 기계적 특성

  • 장복기 (전남대학교 무기재료공학과) ;
  • 백용혁 (전남대학교 무기재료공학과) ;
  • 문종하 (전남대학교 무기재료공학과) ;
  • 이종호 (전남대학교 무기재료공학과)
  • Published : 1997.06.01
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Abstract

The mechanical properties of Al2O3-ZrO2 composites fabricated by RBAO(reaction bonded aluminium oxide) process were investigated. As the amount of ZrO2 increased the sinstered density of Al2O3-ZrO2 composites decreased slightly, but wear resistance was enhanced. Bending strength of Al2O3-ZrO2 composites increased in proportion to the amount of al in case of a fixed ZrO2 content. When the amount of Al was fixed bending strength reached its maximum value at 25 wt% ZrO2. The fracture toughness(K1c) increased with increasing content of ZrO2, but decreased with increasing Al amount. On the other hand, the fracture mode of Al2O3-ZrO2 composites was the mixed mode of inter-and transgranular fracture.

Keywords

References

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