Invention Grant
- Patent Title: Covering member with excellent sliding properties
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Application No.: US14241614Application Date: 2012-09-26
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Publication No.: US09604275B2Publication Date: 2017-03-28
- Inventor: Fumiaki Honda , Kenichi Inoue
- Applicant: Hitachi Tool Engineering, Ltd. , HITACHI METALS, LTD.
- Applicant Address: JP Tokyo
- Assignee: HITACHI METALS, LTD.
- Current Assignee: HITACHI METALS, LTD.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2011-211963 20110928; JP2012-071223 20120327
- International Application: PCT/JP2012/074627 WO 20120926
- International Announcement: WO2013/047548 WO 20130404
- Main IPC: B21J13/02
- IPC: B21J13/02 ; C23C28/04 ; C23C28/00 ; C23C14/06

Abstract:
In order to provide a covered member for which unexpected galling is suppressed in the initial stages when the member is used, and which has excellent sliding properties, a covered member has a hard film on the working surface and has excellent sliding properties, said hard film including an A layer, for which an a1 layer comprising a nitride, carbonitride, or oxynitride having 30% or more of chromium in terms of atomic ratio in metal (including metalloid; the same shall apply hereinafter) component, and an a2 layer comprising a nitride, carbonitride, or oxynitride having 60% or more of vanadium in terms of atomic ratio in metal component, are alternately laminated, and a B layer on the upper layer of said A layer and comprising a nitride, carbonitride, or oxynitride having 60% or more of vanadium in terms of atomic ratio in metal component. The film thickness of each a1 layer and a2 layer of the A layer is 50 nm or less, with the film thickness of the a2 layer being greater than that of the a1 layer, and the film thickness of the B layer is 0.1 mum or greater.
Public/Granted literature
- US20140234582A1 COVERING MEMBER WITH EXCELLENT SLIDING PROPERTIES Public/Granted day:2014-08-21
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