SURFACE-MODIFIED WC-BASED CEMENTED CARBIDE MEMBER, HARD FILM-COATED WC-BASED CEMENTED CARBIDE MEMBER, METHOD FOR PRODUCING SURFACE-MODIFIED WC-BASED CEMENTED CARBIDE MEMBER, AND METHOD FOR PRODUCING HARD FILM-COATED WC-BASED CEMENTED CARBIDE MEMBER

Title:

Document Type and Number:

WIPO Patent Application WO/2013/018768

Kind Code:

A1

Abstract:

A modification phase having a bcc structure is formed on the surface of a WC-based cemented carbide base by subjecting the base surface to an ion bombardment treatment of Cr or the like in a gas that is mainly composed of nitrogen, and a hard film containing at least Cr is formed on the modification phase. Consequently, the base and the hard film have high adhesion to each other due to the modification phase.

Inventors:

ISAKA MASAKAZU (JP)
FUJII FUMIHIRO (JP)

Application Number:

PCT/JP2012/069358

Publication Date:

February 07, 2013

Filing Date:

July 30, 2012

Export Citation:

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Assignee:

HITACHI TOOL ENG (JP)
ISAKA MASAKAZU (JP)
FUJII FUMIHIRO (JP)

International Classes:

B23B27/14; B23B51/00; B23C5/16; B23P15/28; C23C14/02; C23C14/06

Domestic Patent References:

WO2008059791A1

2008-05-22

Foreign References:

JP2007169698A	2007-07-05
JP2008173751A	2008-07-31
JPH0674497B2	1994-09-21
JP4535249B2	2010-09-01
JP4590940B2	2010-12-01
JP2009220260A	2009-10-01

Other References: