发明申请
- 专利标题: Piston for Internal Combustion Engine and Piston Surface Treatment Method
- 专利标题(中): 活塞内燃机和活塞表面处理方法
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申请号: US13469310申请日: 2012-05-11
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公开(公告)号: US20120222646A1公开(公告)日: 2012-09-06
- 发明人: Masato SASAKI
- 申请人: Masato SASAKI
- 申请人地址: JP Hitachinaka-shi
- 专利权人: Hitachi Automotive Systems, Ltd.
- 当前专利权人: Hitachi Automotive Systems, Ltd.
- 当前专利权人地址: JP Hitachinaka-shi
- 优先权: JP2009-063764 20090317
- 主分类号: F02F3/00
- IPC分类号: F02F3/00
摘要:
A piston for an internal combustion engine includes a piston base material and a film of lubrication coating composition. The coating composition has an inner coating layer formed on a surface of the piston base material and an outer coating layer formed on a surface of the inner coating layer. Each of the inner coating layer and the outer coating layer contains at least one of a polyamide-imide resin, a polyimide resin and an epoxy resin as a binder. The inner coating layer contains 0 to 50 wt % of at least one of graphite and molybdenum disulfide as a solid lubricant, whereas the outer coating layer contains 50 to 95 wt % of at least one of graphite and molybdenum disulfide as a solid lubricant.
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