发明名称 |
PISTON RING AND PROCESS FOR PRODUCING SAME |
摘要 |
Provided are a piston ring which, even when a sleeve constituted of an aluminum alloy is used, can sufficiently show the required low frictional properties, wear resistance, and low counterpart-material attacking properties, and a process for producing the piston ring. The piston ring has a rigid carbon film formed as the outermost layer thereof and serving as a sliding surface with a sleeve constituted of an aluminum alloy, wherein the rigid carbon film gives an X-ray diffraction pattern that has peaks assigned to graphite crystals. The rigid carbon film of the piston ring is formed using a chemical vapor deposition method. The rigid carbon film of the piston ring has a hydrogen content which is at least 20 atm% but lower than 30 atm%, and gives a Raman spectrum in which the ratio of the area (ID) of D-band peaks to the area (IG) of G-band peaks, ID/IG, is 0.5-2.0. |
申请公布号 |
WO2015121944(A1) |
申请公布日期 |
2015.08.20 |
申请号 |
WO2014JP53327 |
申请日期 |
2014.02.13 |
申请人 |
NIPPON ITF, INC.;HONDA MOTOR CO., LTD. |
发明人 |
OOSHIRO, TAKEHIKO;MIYAKE, KOJI;YOSHIDA, SATOSHI;FUJIMAGARI, EISHI;YAMASAKI, TAKEYUKI;CHIBA, HIDETOSHI |
分类号 |
F16J9/26;C23C16/26 |
主分类号 |
F16J9/26 |
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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