Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effect on Mechanical Properties of 3Y-TZP; (II) Addition of Alumina

3Y-TZP의 기계적 물성에 미치는 영향: (II) 알루미나의 첨가

  • Yang, Seong-Koo (Department of Materials Science and Engineering, Kyungnam University, The Center for Instrumental Analysis in Kyungnam University) ;
  • Bae, Kyung-Man (Department of Materials Science and Engineering, Kyungnam University) ;
  • Cho, Bum-Rae (Department of Advanced Materials Engineering, Keimyung University) ;
  • Kang, Jong-Bong (Division of Advanced Materials Engineering, Kyungnam University)
  • 양성구 (경남대학교 대학원 재료공학과, 경남대학교 공동기기센터) ;
  • 배경만 (경남대학교 대학원 재료공학과) ;
  • 조범래 (계명대학교 신소재공학과) ;
  • 강종봉 (경남대학교 신소재공학부)
  • Published : 2005.06.01
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Abstract

Although a lot of studies in fracture toughness of Y-TZP ceramics for structural applications have been done, it remains an important challenge to be able to improve fracture toughness of Y-TZP ceramics. In this research, milling method adding monoclinic zirconia and $Al_2O_3$ to 3Y-TZP was introduced to improve the fracture toughness of 3Y-TZP. Experimental results showed that addition of small amount of $Al_2O_3$ causes to make lots of oxygen vacancies (VO) by substituting $Al^{3+}$ for $Zr^{4+}$. It is believed that the produced vacancies provides useful routes far mass transfer. Y-TZP ceramics having higher microhardness and better fracture toughness was fabricated by sintering at $1400^{\circ}C$.

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References

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