SURFACE-COATED CUTTING TOOL - MITSUBISHI MATERIALS CORP

Title:

SURFACE-COATED CUTTING TOOL

Document Type and Number:

WIPO Patent Application WO/2019/188783

Kind Code:

A1

Abstract:

This surface-coated cutting tool has a tool base body, a lower layer, and an upper layer, wherein the lower layer includes a W layer, a metal carbide layer, and a metal carbon nitride layer, the W layer is formed extending from the surface of the tool base body to a depth of 10-500 nm, the metal carbide layer contains any one of Ti, Cr, Zr, Hf, Nb, and Ta, and has an average layer thickness of 5-500 nm, the metal carbon nitride layer contains a metal contained in the metal carbide layer, and has an average layer thickness of 5-300 nm, the upper layer has a structure in which A-layers and B-layers are alternately layered, and has a total average layer thickness of 1.0-8.0 μm, the A-layers have an average single-layer thickness of 0.1-5.0 μm, and have an average composition represented by (AlxCr1-x)N (0.40≤x≤0.80), and the B-layers have an average single-layer thickness of 0.1-5.0 μm, and have an average composition represented by (Al1-a-b-c-dTiaCrbSicYd)N (0≤a≤0.40, 0.05≤b≤0.40, 0≤c≤0.20, and 0.01≤d≤0.10).

Inventors:

KINOSHITA TATSUKI (JP)
HASHIMOTO TATSUO (JP)
SATO SHUN (JP)
SUGAWARA YUTO (JP)
MAEKAWA TAKUYA (JP)

Application Number:

PCT/JP2019/012095

Publication Date:

October 03, 2019

Filing Date:

March 22, 2019

Export Citation:

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Assignee:

MITSUBISHI MATERIALS CORP (JP)

International Classes:

B23B27/14; B23B51/00; B23C5/16; C23C14/06

Domestic Patent References:

WO2017183327A1	2017-10-26
WO2014123053A1	2014-08-14
WO2015156383A1	2015-10-15

Foreign References:

JP2009220260A	2009-10-01
JP2017001147A	2017-01-05
JP2007007764A	2007-01-18
JP2011045970A	2011-03-10
JP2018059675A	2018-04-12
JP4713413B2	2011-06-29
JP2017001147A	2017-01-05
JP5098726B2	2012-12-12

Other References: