Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference (한국윤활학회:학술대회논문집)

Korean Tribology Society (한국트라이볼로지학회)
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내저온열화 특성을 갖는 지르코니아/알루미나 복합세라믹의 마멸평가

  • Kim H. (Dept. of Mechanical Engineering, Sejong University) ;
  • Lee KY (Dept. of Mechanical Engineering, Sejong University, Dept. of Bioengineering Research Center, Sejong University) ;
  • Kim DJ (Dept. of Bioengineering Research Center, Sejong University) ;
  • Lee MH (Advanced Material Analysis and Evaluation Team, KICET) ;
  • Seo WS (Advanced Material Analysis and Evaluation Team, KICET)
  • 김환 (세종대학교 기계공학과) ;
  • 이권용 (세종대학교 기계공학과, 세종대학교 의공학연구소) ;
  • 김대준 (세종대학교 의공학연구소) ;
  • 이명현 (요업(세라믹)기술원 신소재분석평가팀) ;
  • 서원선 (요업(세라믹)기술원 신소재분석평가팀)
  • Published : 2003.11.01
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Abstract

Ceramic femoral heads in the total hip replacement have been developed to reduce the polyethylene liner wear. Alumina and zirconia (3Y-TZP) are using in clinical application worldwide and there are many good test reports. However, alumina has a risk of catastrophic failure, and zirconia has the low temperature degradation in spite of enhanced fracture toughness. Recently, novel zirconia/alumina composite having low temperature degradation-free character and high fracture tough . was developed and it leads the lower wear 3f polyethylene than alumina and zirconia. In the present study, in order to optimise the microstructure of low temperature degradation (LTD)-free zirconia/alumina composite for the best wear resistance of polyethylene, various compositions of (LTD)-free zirconia/alumina composites were fabricated, and the sliding wear of UHMWPE against these novel composites were examined and compared with that against alumina and zirconia ceramics used for total hip joint heads.

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