发明公开
EP2759620A1 HARD FILM, HARD FILM FORMED BODY, AND ROLLING BEARING
有权
HARTSCHICHT,AUS DER HARTSCHICHT GEFORMTERKÖRPERUNDWÄLZLAGER
- 专利标题: HARD FILM, HARD FILM FORMED BODY, AND ROLLING BEARING
- 专利标题(中): HARTSCHICHT,AUS DER HARTSCHICHT GEFORMTERKÖRPERUNDWÄLZLAGER
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申请号: EP12833570.0申请日: 2012-09-21
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公开(公告)号: EP2759620A1公开(公告)日: 2014-07-30
- 发明人: TSUTSUI, Hideyuki , OOHIRA, Kouya , NAKANISHI, Masaki
- 申请人: NTN Corporation
- 申请人地址: 3-17, Kyomachibori 1-chome Nishi-ku Osaka-shi, Osaka 550-0003 JP
- 专利权人: NTN Corporation
- 当前专利权人: NTN Corporation
- 当前专利权人地址: 3-17, Kyomachibori 1-chome Nishi-ku Osaka-shi, Osaka 550-0003 JP
- 代理机构: White, Duncan Rohan
- 优先权: JP2011207936 20110922; JP2011207983 20110922; JP2011208005 20110922
- 国际公布: WO2013042765 20130328
- 主分类号: C23C14/06
- IPC分类号: C23C14/06 ; F16C33/58
摘要:
The present invention provides a hard film which has high wear resistance and excellent peeling resistance and can be prevented from peeling off a base material over a long period of time and a hard film formed body on which the hard film is formed. A hard film (8) has a structure composed of a first mixed layer (8a), consisting mainly of Cr and WC, which is formed directly on a raceway surface (2a) of an inner ring (2) (base material) of a rolling bearing, a second mixed layer (8b), consisting mainly of WC and DLC, which is formed on the first mixed layer (8a), and a surface layer (8c), consisting mainly of DLC, which is formed on the second mixed layer (8b). In the first mixed layer (8a), a content rate of the Cr becomes continuously or stepwise lower and that of the DLC becomes continuously or stepwise higher from a side of the base material toward a side of the second mixed layer (8b). In the second mixed layer (8b), a content rate of the WC becomes continuously or stepwise lower and that of the DLC becomes continuously or stepwise higher from a side of the first mixed layer (8a) toward a side of the surface layer (8c). A content of hydrogen in the second mixed layer (8b) is set to 10 to 45 atomic percent.
公开/授权文献
- EP2759620B1 HARD FILM, HARD FILM FORMED BODY, AND ROLLING BEARING 公开/授权日:2016-07-20
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