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:
Feb. 25, 2020
Filed:
Jan. 22, 2016
Mitsubishi Materials Corporation, Tokyo, JP;
Kazuaki Senbokuya, Naka, JP;
Masakuni Takahashi, Ogaki, JP;
Tsuyoshi Ogami, Naka, JP;
Tatsuo Hashimoto, Akashi, JP;
MITSUBISHI MATERIALS CORPORATION, Tokyo, JP;
Abstract
In a surface-coated cutting tool, a hard coating includes one or more layers. At least one layer thereof is a hard coating layer composed of a complex nitride or carbonitride layer of Al, Cr, and Si and satisfying (AlCrSi)(CN) where x, y and z are atomic ratios and satisfy 0.1≤x≤0.4, 0.01≤y≤0.2, and 0≤z≤0.3, respectively. The hard coating layer contains particles including: less than 10 atomic % of non-metal components selected from C and N; and metal components selected from Cr, Al and Si. In the cross-section perpendicular to the tool body surface, the number ratio of oblate particles with an Al content of 50 atomic % or less, a long diameter of less than 0.5 μm, and an aspect ratio of 2.0 or more is 90% or more with respect to the total number of the particles.