Title:
CUTTING TOOL AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/144867
Kind Code:
A1
Abstract:
This cutting tool includes a base material and a coating disposed on the base material. The coating has a first layer that comprises multiple hard particles. The hard particles comprise TiSiCN that has a cubic crystal structure. The hard particles have a lamella structure in which layers of relatively high silicon concentration and layers of relatively low silicon concentration are alternately stacked on top of each other. The maximum value of the percentage {ASi/(ASi+ATi)}×100 of the number of silicon atoms ASi with respect to the total of the number of silicon atoms ASi and the number of titanium atoms ATi in grain boundary regions between the hard particles is greater than the average value of the percentage {BSi/(BSi+BTi)}×100 of the number of silicon atoms BSi with respect to the total of the number of silicon atoms BSi and the number of titanium atoms BTi in the first layer.
Inventors:
HARADA HARUKO (JP)
ONO SATOSHI (JP)
PASEUTH ANONGSACK (JP)
OKAMURA KATSUMI (JP)
ONO SATOSHI (JP)
PASEUTH ANONGSACK (JP)
OKAMURA KATSUMI (JP)
Application Number:
PCT/JP2022/002579
Publication Date:
August 03, 2023
Filing Date:
January 25, 2022
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
B23B27/14; B23B51/00; B23C5/16; C23C16/36
Foreign References:
| JP2015505902A | 2015-02-26 | |||
| JP2020507679A | 2020-03-12 | |||
| JP2019171547A | 2019-10-10 | |||
| CN113529016A | 2021-10-22 | |||
| JP2015505902A | 2015-02-26 | |||
| JP2020507679A | 2020-03-12 |
Other References:
SHINYA IMAMURA ET AL.: "Properties and cutting performance of AlTiCrN/TiSiCN bilayer coatings deposited by cathodic-arc ion plating", SURFACE AND COATINGS TECHNOLOGY, vol. 202, 2007, pages 820 - 825, XP022342021, DOI: 10.1016/j.surfcoat.2007.05.087
See also references of EP 4292736A4
See also references of EP 4292736A4
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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