Title:
COATED CUTTING TOOL
Document Type and Number:
WIPO Patent Application WO/2020/189256
Kind Code:
A1
Abstract:
This coated cutting tool has a hard coating including: a b-layer comprising a nitride or a carbonitride; a c-layer which is a layered coating comprising, layered alternately with a film thickness of 50 nm or less each, a c1-layer of a nitride or a carbonitride containing Al at between 55% by atom and 75% by atom inclusive, Cr at a large content ratio, and further, at least Si, and a c2-layer of a nitride or a carbonitride containing Al at between 55% by atom and 75% by atom inclusive, and containing Ti in a large amount; and a d-layer that is a nitride or a carbonitride containing, relative to the total amount of metal (including metalloid) elements, Al at between 55% by atom and 75% by atom inclusive, Cr at a large content ratio, Cr at a content ratio of 20% by atom or greater, and further, at least Si. The peak intensity Ih attributed to the hcp (010) plane of AlN in the c-layer, and the total peak intensity Is attributed to a plurality of predetermined crystal phases, fulfill the relationship Ih×100/Is ≤ 15.
Inventors:
ISAKA MASAKAZU (JP)
Application Number:
PCT/JP2020/008846
Publication Date:
September 24, 2020
Filing Date:
March 03, 2020
Export Citation:
Assignee:
MOLDINO TOOL ENGINEERING LTD (JP)
International Classes:
B23B27/14; B23C5/16; C23C14/06
Domestic Patent References:
| WO2017073653A1 | 2017-05-04 |
Foreign References:
| JP2011011287A | 2011-01-20 | |||
| JP5673904B1 | 2015-02-18 | |||
| JP2016064487A | 2016-04-28 | |||
| JP2019050327A | 2019-03-28 | |||
| JP2004306228A | 2004-11-04 | |||
| JP2010521589W |
Other References:
See also references of EP 3943223A4
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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