Invention Grant
US09409238B2 Hard coating for cutting tool, and cutting tool coated with hard coating
有权
硬质涂层用于切削刀具,切削刀具涂有硬质涂层
- Patent Title: Hard coating for cutting tool, and cutting tool coated with hard coating
- Patent Title (中): 硬质涂层用于切削刀具,切削刀具涂有硬质涂层
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Application No.: US14389879Application Date: 2012-04-09
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Publication No.: US09409238B2Publication Date: 2016-08-09
- Inventor: Masatoshi Sakurai , Takaomi Toihara
- Applicant: Masatoshi Sakurai , Takaomi Toihara
- Applicant Address: JP Toyokawa-shi
- Assignee: OSG CORPORATION
- Current Assignee: OSG CORPORATION
- Current Assignee Address: JP Toyokawa-shi
- Agency: Oliff PLC
- International Application: PCT/JP2012/059738 WO 20120409
- International Announcement: WO2013/153614 WO 20131017
- Main IPC: B23B27/14
- IPC: B23B27/14 ; B23B51/00 ; C23C30/00 ; C23C14/34 ; C23C28/00

Abstract:
A hard coating for a cutting tool being highly resistant to both wear and seizure; and a cutting tool coated with the hard coating. This hard coating is a multilayer film including two or more of the following layered in alternation: first coating layers including AgaCu1-a; and second coating layers including a nitride, oxide, carbide, carbonitride, or boride containing at least one element selected from among group IVA, VA, and VIA elements, aluminum, and silicon. Since the atomic proportion for the first coating layers is between 0.2 and 0.4, inclusive, the layering pitch of the first and second coating layers is between 0.2 and 100 nm, inclusive, and the total thickness is between 0.2 and 10.0 μm, inclusive, the coefficient of friction and cutting resistance can be reduced by the inclusion of silver in the coating, and provide a hard coating that exhibits superb lubricity and resistance to seizure.
Public/Granted literature
- US20150072126A1 HARD COATING FOR CUTTING TOOL, AND CUTTING TOOL COATED WITH HARD COATING Public/Granted day:2015-03-12
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