Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Characteristics and Effects for the Mechanical Properties on the Wearness of the ZTA System with $Cr_2O_3$ and $HfO_2$) as Additives

ZTA계에서 첨가물($Cr_2O_3$, $HfO_2$)에 따른 물성 변화 및 기계적 성질이 마모성에 미치는 영향

  • 최성철 (한양대학교 공과대학 무기재료공학과) ;
  • 이응상 (한양대학교 공과대학 무기재료공학과)
  • Published : 1990.03.01
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Abstract

ZrO2-Toughened Alumina-Ceramics(ZTA) with Cr2O3 and HfO2 as addition were synthesized by assintering method for solid solution of Al2O3/Cr2O3 and ZrO2/HfO2, and were prepared by pressureless sintering at 1$600^{\circ}C$. The effects of Cr2O3 and HfO2 on the thermal and mechanical properties, the sintering mechanism, and the wearness between theory and experiment were investigated. Among three kinds of mechanisms such as stress-induced transformation, microcracking, and crack deflection it contributed to the ZTA system with a few exceptons according to composite. We show that wearness can be estimated sufficiently by HV and KIC through theory and experiment.

Keywords

References

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