SURFACE-COATED CUTTING TOOL - MITSUBISHI MATERIALS CORP

Title:

SURFACE-COATED CUTTING TOOL

Document Type and Number:

WIPO Patent Application WO/2020/138304

Kind Code:

A1

Abstract:

This surface-coated cutting tool is provided with a hard coating layer, in which: a TiAlCN layer α (1) containing 70 area% or more wurtzite hexagonal crystal structure and a TiAlCN layer β (2) containing 70 area% or more NaCl face-centered cubic structure are layered, one layer each, onto the surface of a tool substrate, on a tool surface side (S) and on a tool substrate side (B), respectively; the composition of the TiAlCN layer α (1) is 0.70 ≤ xα ≤ 0.95 and 0.000 ≤ yα ≤ 0.010, if represented by (Ti(1-xα)Alxα)(CyαN(1-yα)); the composition of the TiAlCN layer β (2) is 0.65 ≤ xβ ≤ 0.95 and 0.000 ≤ yβ ≤ 0.010, if represented by (Ti(1-xβ)Alxβ)(CyβN(1-yβ)); and the TiAlCN layer α (1) and the TiAlCN layer β (2) satisfy 0.5μm≤ Lα ≤ 10.0 μm and 1.0 μm ≤ Lβ ≤ 20.0μm, if Lα and Lβ are the mean layer thickness.

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Inventors:

ISHIGAKI TAKUYA (JP)
YANAGISAWA KOUSUKE (JP)
NAKAMURA HIROKI (JP)
HONMA HISASHI (JP)

Application Number:

PCT/JP2019/051161

Publication Date:

July 02, 2020

Filing Date:

December 26, 2019

Export Citation:

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Assignee:

MITSUBISHI MATERIALS CORP (JP)

International Classes:

B23B27/14; B23B51/00; B23C5/16; C23C16/34; C23C16/36

Domestic Patent References:

WO2013031915A1	2013-03-07
WO2018008554A1	2018-01-11

Foreign References:

JP2017056497A	2017-03-23
JP2011500964A	2011-01-06
JP2013510946A	2013-03-28
JP2017124463A	2017-07-20
JP2018243963A	2018-12-27
JP2019227056A	2019-12-17
JP2001341008A	2001-12-11
JP2011516722W
JP2015124407A	2015-07-06
JP2016003369A	2016-01-12

Other References: