SURFACE-COATED BORON NITRIDE SINTERED TOOL - SUMITOMO ELEC HARDMETAL CORP

Title:

SURFACE-COATED BORON NITRIDE SINTERED TOOL

Document Type and Number:

WIPO Patent Application WO/2015/001904

Kind Code:

A1

Abstract:

A surface-coated boron nitride sintered tool, wherein at least a cutting edge portion is provided with a cubic boron nitride sintered compact and a coating film which is formed on the surface of the cubic boron nitride sintered compact. The coating film comprises a layer (A), a layer (B) and a layer (C), and the layer (C) is arranged between the layer (A) and the layer (B). The layer (A) contains Ti and the like. The layer (B) is obtained by alternately laminating compound (B1) layers which contain Ti, Si and the like and compound (B2) layers which contain Al and the like. The layer (C) contains McLczc (wherein Mc represents one or more elements selected from among the group 4 elements, the group 5 elements and group 6 elements of the periodic table, Al and Si; Lc represents one or more elements selected from among B, C, N and O; and zc is more than 0 but 0.85 or less).

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Inventors:

SORAI YOSHIAKI (JP)
OKAMURA KATSUMI (JP)
TSUKIHARA NOZOMI (JP)
SETOYAMA MAKOTO (JP)

Application Number:

PCT/JP2014/064959

Publication Date:

January 08, 2015

Filing Date:

June 05, 2014

Export Citation:

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Assignee:

SUMITOMO ELEC HARDMETAL CORP (JP)

International Classes:

B23B27/14; B23B27/20

Domestic Patent References:

WO2012005275A1	2012-01-12
WO2011129422A1	2011-10-20
WO2010150335A1	2010-12-29
WO2012005275A1	2012-01-12

Foreign References:

JP2008254159A	2008-10-23
JP2008188689A	2008-08-21
JP2008534297A	2008-08-28

Other References: