Biomedical member and method for producing the same

Details Biomedical member and method for producing the same Biomedical member and method for producing the same

2004-10-29

2010-10-26

Group, Karl E (Department: 1793)

Compositions: ceramic

Ceramic compositions

Refractory

C501S103000, C501S127000, C428S469000, C428S472000, C428S472200

Reexamination Certificate

active

07820577

ABSTRACT:
A biomedical member having high strength, high toughness and high hardness and an artificial joint that uses the same are provided. In addition, a biomedical member that exhibits high wear resistance even in in vivo environment and an artificial joint are provided.Such a composite ceramic is used that contains 65% by weight or more Al2O3, 4 to 34% by weight of ZrO2and 0.1 to 4% by weight of SrO, while Sr forms a solid solution with part of the ZrO2grains. The composite ceramics further contains TiO2, MgO and SiO2as sintering additives, while controlling the amounts to 0.20% by weight or more SiO2, 0.22% by weight or more TiO2and 0.12% by weight or more MgO, and the total amount of SiO2, TiO2and MgO within a range from 0.6 to 4.5% by weight.

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Japanese language office action dated May 18, 2010 and its English language translation for corresponding Japanese application 2003370208.

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