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:
Jun. 04, 2024
Filed:
Sep. 27, 2019
Mitsubishi Materials Corporation, Tokyo, JP;
Takuya Ishigaki, Tsukuba, JP;
Kousuke Yanagisawa, Naka, JP;
Hiroki Nakamura, Joso, JP;
Hisashi Honma, Naka, JP;
MITSUBISHI MATERIALS CORPORATION, Tokyo, JP;
Abstract
A surface coated cutting tool comprises a tool body. A TiAlCN layer having an average layer thickness of 2.0 to 20.0 μm and represented by (TiAl)(CN) is provided on the surface of the tool body and has an average content ratio xof Al and an average content ratio yof C that satisfy 0.60≤x≤0.95 and 0.00≤y≤0.05, an area ratio occupied by crystal grains having an NaCl-type face-centered cubic structure that satisfies 90 area % or more, and crystal grains satisfying 0.01 μm<d≤0.20 μm in 10 to 40 area %. An average maximum length in a direction parallel to the surface of the tool body in each region in which the crystal grains having d of 0.01 μm<d≤0.20 μm are adjacent and connected to each other in the upper layer side region is 5.0 μm or less.