发明名称 CAST BASE FOR BIOMEDICAL USE FORMED OF COBALT-CHROMIUM BASED ALLOY AND HAVING EXCELLENT DIFFUSION HARDENING TREATABILITY, SLIDING ALLOY MEMBER FOR BIOMEDICAL USE AND ARTIFICIAL JOINT
摘要 A cast base for biomedical use, which is formed of a cobalt-chromium based alloy and has excellent diffusion hardening treatability, characterized by containing 0.1 mass % or greater of nitrogen (N) and having a volume fraction of an fcc (face centered cubic lattice) phase in the metallic structure thereof of 50% or greater. Even in the case of subjecting the aforesaid cobalt-chromium based alloy cast base in the as-cast state, the structure of which is liable to be non-uniform, to a diffusion hardening treatment, it is possible to obtain a sliding alloy member for biomedical use, wherein a uniform hardened layer has been formed, by the diffusion hardening treatment. Thus, a sliding alloy member for biomedical use and so on, which can stably and continuously exhibit high strength, excellent abrasion resistance and, moreover, excellent corrosion resistance, can be provided.
申请公布号 US2013085575(A1) 申请公布日期 2013.04.04
申请号 US201013702338 申请日期 2010.06.11
申请人 ISHIMIZU KEITA;NANBA SHIGENOBU 发明人 ISHIMIZU KEITA;NANBA SHIGENOBU
分类号 A61F2/30 主分类号 A61F2/30
代理机构 代理人
主权项
地址