SURFACE-COATED CUBIC BORON NITRIDE SINTERED COMPACT TOOL

Title:

SURFACE-COATED CUBIC BORON NITRIDE SINTERED COMPACT TOOL

Document Type and Number:

WIPO Patent Application WO/2017/111044

Kind Code:

A1

Abstract:

In this surface-coated cubic boron nitride sintered compact tool, a hard coating layer comprising an alternating-layer structure of an A layer and a B layer is formed on the surface of a cBN substrate, the cBN substrate (sintered compact) comprises a Ti compound, WC, AlN, TiB2, Al2O3, and cBN, the A layer has the composition (Ti1-xAlx)N (where 0.4 ≤ x ≤ 0.7 by atomic ratio), the B layer has the composition (Cr1-y-zAlyMz)N (where 0.03 ≤ y ≤ 0.4 and 0 ≤ z ≤ 0.05 by atomic ratio), and the plastic deformation work ratio of the B layer is 0.35-0.50.

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Inventors:

MAEKAWA TAKUYA (JP)
TAKAHASHI MASAKUNI (JP)
SATO SHUN (JP)
YUMOTO KENJI (JP)

Application Number:

PCT/JP2016/088417

Publication Date:

June 29, 2017

Filing Date:

December 22, 2016

Export Citation:

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Assignee:

MITSUBISHI MATERIALS CORP (JP)

International Classes:

B23B27/14; B23B27/20; B23B51/00; B23C5/16; C04B35/5831; C04B41/87; C04B41/89; C23C14/06

Domestic Patent References:

WO2005053887A1

2005-06-16

Foreign References:

JP2001198709A	2001-07-24
JP2011218513A	2011-11-04
JP2014091169A	2014-05-19
JP2017042906A	2017-03-02

Other References: