发明名称 |
High wear-resistant member, method of producing the same, and valve gear using the same for use in internal combustion engine. |
摘要 |
<p>A wear-resistant metal member comprises a surface that has a sprayed layer consisting essentially of, by weight, 2 to 10% C, 18 to 60% Cr, 0.3 to 20% V, 25% or less Mo, 25% or less W, 10% or less Nb, 10% or less Ti, 10% or less Zr, 10% or less Hf and the balance being Fe in a proportion of 20% or greater. The sprayed layer has a martensite-phase matrix containing carbide particles, nitride particles or carbonitride particles. In addition, the member of the present invention is produced by the steps of: plasma-spraying the above-described metal in a reduced pressure atmosphere; and quenching the thus-sprayed metal layer from a predetermined temperature to form a materisite phase in that layer. In addition, the sprayed metal layer may be subjected to carburizing, nitriding or carbonitriding to form a carburized, nitrided or carbonitrided layer in the sprayed metal layer. The member of the present invention has a high wear resistance and is used as a sliding portion of a valve gear in an internal combustion engine.</p> |
申请公布号 |
EP0266149(B1) |
申请公布日期 |
1995.01.04 |
申请号 |
EP19870309424 |
申请日期 |
1987.10.26 |
申请人 |
HITACHI, LTD.;M. H. CENTER, LTD. |
发明人 |
DOI, MASAYUKI;ASAHI, NAOTATSU;KOJIMA, YOSHITAKA;KANAMARU, HISANOBU;AOYAMA, SUSUMU |
分类号 |
C22C38/00;C23C4/06;C23C4/18;C23C30/00;(IPC1-7):C23C4/18;C23C4/08 |
主分类号 |
C22C38/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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