Invention Grant
- Patent Title: Hard multilayer film formed body and method for manufacturing same
- Patent Title (中): 硬质多层膜成型体及其制造方法
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Application No.: US12998426Application Date: 2009-10-29
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Publication No.: US08728621B2Publication Date: 2014-05-20
- Inventor: Kouya Oohira , Naoko Ito , Yoji Sato , Hideyuki Tsutsui
- Applicant: Kouya Oohira , Naoko Ito , Yoji Sato , Hideyuki Tsutsui
- Applicant Address: JP Osaka
- Assignee: NTN Corporation
- Current Assignee: NTN Corporation
- Current Assignee Address: JP Osaka
- Agency: Hedman & Costigan, P.C.
- Agent James V. Costigan; Kathleen A. Costigan
- Priority: JP2008-278852 20081029; JP2009-220048 20090925; JP2009-220074 20090925; JP2009-220088 20090925
- International Application: PCT/JP2009/068555 WO 20091029
- International Announcement: WO2010/050542 WO 20100506
- Main IPC: C23C14/06
- IPC: C23C14/06 ; B23B27/14

Abstract:
The present invention provides a hard multilayer film formed body which has an intermediate layer excellent in its adhesion to a base material and a DLC film which is a surface layer excellent in its wear resistance, prevents peeling from occurring between the DLC film and the intermediate layer, and is excellent in its wear resistance and a method for producing the same. A hard multilayer film formed body 1 consists of a multilayer film formed on a surface of a base material 2 consisting of a cemented carbide material or a ferrous material. The multilayer film has (1) a film, composed mainly of DLC, which is formed as a surface layer 5 of the multilayer film; (2) an intermediate layer 3, composed mainly of a metallic material, which is formed between the surface layer 5 and the base material 2; and (3) a stress relaxation layer 4, composed mainly of carbon, which is formed between the intermediate layer 3 and the surface layer 5. The stress relaxation layer 4 is a graded layer whose hardness increases continuously or stepwise from a side of the intermediate layer 3 toward a side of the surface layer 5.
Public/Granted literature
- US20110195265A1 HARD MULTILAYER FILM FORMED BODY AND METHOD FOR MANUFACTURING SAME Public/Granted day:2011-08-11
Information query
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