发明授权
- 专利标题: Hard coating film excellent in lubrication characteristics, process for formation thereof, and tool for the plastic working of metal
- 专利标题(中): 润滑特性优良的硬质涂膜,其形成工艺,金属塑料加工用工具
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申请号: US12439921申请日: 2007-12-21
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公开(公告)号: US08298999B2公开(公告)日: 2012-10-30
- 发明人: Fumiaki Honda , Ken Inoue , Kenichi Inoue
- 申请人: Fumiaki Honda , Ken Inoue , Kenichi Inoue
- 申请人地址: JP Tokyo
- 专利权人: Hitachi Metals, Ltd.
- 当前专利权人: Hitachi Metals, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Sughrue Mion, PLLC
- 优先权: JP2006-347081 20061225; JP2007-198941 20070731
- 国际申请: PCT/JP2007/074641 WO 20071221
- 国际公布: WO2008/078675 WO 20080703
- 主分类号: C04B35/52
- IPC分类号: C04B35/52 ; F16C33/20
摘要:
The invention aims at providing a hard coating film excellent in lubrication characteristics; a process for the formation thereof; and tools for the plastic working of metal, and provides a hard coating film covering the surface of a substrate to come into contact with other member, wherein carbon atoms having carbon-carbon bonds are present in an amount of 10 at % or above. It is preferable that the hard coating film contain titanium carbide, while it is preferable to form a titanium nitride coating layer between the surface of the substrate and the hard coating film. The invention also provides a process for the formation of a hard coating film on the surface of a substrate by arc ion plating which comprises introducing a hydrocarbon gas during the arc ion plating with a metal target and which makes it possible to form on the surface of a substrate a coating film where carbon atoms having carbon-carbon bonds are present in an amount of 10 at % or above. It is preferable that prior to the introduction of a hydrocarbon gas, nitrogen gas be introduced to form a metal nitride layer on the surface of the substrate. Further, the invention provides tools for the plastic working of metal whose working surfaces are covered with the hard coating film.