发明授权
- 专利标题: Piston ring
- 专利标题(中): 活塞环
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申请号: US14129050申请日: 2012-06-21
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公开(公告)号: US09347559B2公开(公告)日: 2016-05-24
- 发明人: Takuma Sekiya , Yuuichi Murayama , Masayuki Sato , Yuji Shima , Junya Takahashi , Masaki Moronuki
- 申请人: Takuma Sekiya , Yuuichi Murayama , Masayuki Sato , Yuji Shima , Junya Takahashi , Masaki Moronuki
- 申请人地址: JP Tokyo
- 专利权人: KABUSHIKI KAISHA RIKEN
- 当前专利权人: KABUSHIKI KAISHA RIKEN
- 当前专利权人地址: JP Tokyo
- 代理机构: Birch, Stewart, Kolasch & Birch, LLP
- 优先权: JP2011-140752 20110624; JP2011-237589 20111028
- 国际申请: PCT/JP2012/065880 WO 20120621
- 国际公布: WO2012/176846 WO 20121227
- 主分类号: C23C14/06
- IPC分类号: C23C14/06 ; F16J9/26 ; C23C14/32 ; C23C28/04
摘要:
A high-thermal-conductivity piston ring having excellent scuffing resistance and wear resistance, which can be used in a high-heat-load environment in engines is provided. Also, to provide a piston ring with low friction for contributing to the improvement of fuel efficiency, a TiN coating as thick as 10-60 μm, in which the texture coefficient of a (111) plane is 1.2-1.65 in X-ray diffraction on the coating surface, with the texture coefficient of a (111) plane>the texture coefficient of a (220) plane>the texture coefficient of a (200) plane, is formed under the optimized ion plating conditions on a peripheral surface of the piston ring. Further, to obtain excellent sliding characteristics with low friction without losing excellent thermal conductivity of TiN, a hard amorphous carbon coating is formed on the TiN coating.
公开/授权文献
- US20140125013A1 PISTON RING 公开/授权日:2014-05-08