The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 08, 2025
Filed:
Feb. 03, 2021
Mitsubishi Materials Corporation, Tokyo, JP;
Hiroki Nakamura, Joso, JP;
Takuya Ishigaki, Joso, JP;
Kousuke Yanagisawa, Naka-gun, JP;
Hisashi Honma, Tokyo, JP;
MITSUBISHI MATERIALS CORPORATION, Tokyo, JP;
Abstract
Provided is a surface-coated cutting tool including a complex carbonitride layer on the tool body, wherein a ratio of crystal grains having a NaCl type face-centered cubic structure is 80 area % or more, xand ysatisfy 0.60≤x≤0.90 and 0.000≤y≤0.050, respectively, a composition of the Ti—Al complex carbonitride layer being represented by (TiAl)(CN), the xbeing an average of x that is an Al content in a total content of Al and Ti, and the ybeing an average of y that is a C content in a total content of C and N, the crystal grains having the NaCl type face-centered cubic structure include crystal grains in which the x repeatedly increases and decreases, the crystal grains include 10 to 40 area % of crystal grains Ghaving an average distance of 40 to 160 nm and crystal grains Ghaving an average distance of 1 to 7 nm.