SURFACE-COATED CUTTING TOOL - MITSUBISHI MATERIALS CORP

Title:

SURFACE-COATED CUTTING TOOL

Document Type and Number:

WIPO Patent Application WO/2022/138375

Kind Code:

A1

Abstract:

A surface-coated cutting tool having a laminate layer comprising a first layer and a second layer of a cubic structure with an average thickness of 0.5 to 8 μm, wherein a layer on each of a substrate side and a front surface side is the first layer. The first layer has an average thickness of 0.1 to 2 μm and comprises (Al1-x Crx)Ｎ, where x = 0.20 to 0.60. The second layer has an average thickness of 0.1 to 2 μm, comprises (Al1-a-bCraSib)N, where a = 0.20 to 0.60, b = 0.01 to 0.20, and has an Si content varying repeatedly with an average interval between a maximum value and a minimum value being 1 to 100 nm, an average maximum value Simax satisfying 1.0 < Simax/b ≤ 2.0, an average minimum value Simin satisfying 0.0 ≤ Simin/b < 1.0, and a half width of a diffraction peak of a 111 diffraction line being 0.1 to 1.0 degree. When a diffraction peak intensity of the diffraction line is I111 and a diffraction peak intensity of a 200 diffraction line is I200, then I111/I200 is greater than 1 and less than 5.

Inventors:

SATO SHUN (JP)
SUGAWARA YUTO (JP)

Application Number:

PCT/JP2021/046270

Publication Date:

June 30, 2022

Filing Date:

December 15, 2021

Export Citation:

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Assignee:

MITSUBISHI MATERIALS CORP (JP)

International Classes:

B23B27/14; B23B51/00; C23C14/06

Domestic Patent References:

WO2021200042A1

2021-10-07

Foreign References:

JP2020146777A	2020-09-17
JP2018094670A	2018-06-21
JP2018094669A	2018-06-21
JP2019528183A	2019-10-10
JPH08127863A	1996-05-21
JP2005126736A	2005-05-19
JP2011093085A	2011-05-12
JP2012045650A	2012-03-08
JP5087427B2	2012-12-05
JP2020212386A
JP2005126736A	2005-05-19
JP2011093085A	2011-05-12
JP2012045650A	2012-03-08
JP5087427B2	2012-12-05

Other References: