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:
Sep. 27, 2016
Filed:
Mar. 11, 2013
Mitsubishi Materials Corporation, Tokyo, JP;
Makoto Igarashi, Naka, JP;
Sho Tatsuoka, Naka, JP;
Naoyuki Iwasaki, Naka, JP;
Akira Osada, Naka, JP;
MITSUBISHI MATERIALS CORPORATION, Tokyo, JP;
Abstract
A surface-coated cutting tool includes a body and a hard coating layer coating the cutting tool body. In the surface-coated cutting tool, the (TiAl)(CN) layer with a cubic crystal structure (X and Y are atomic ratio, and satisfy 0.60≦X≦0.90 and 0.0005≦Y≦0.005, respectively) is vapor-deposited on the body by a chemical vapor deposition method. The Al content Xis 0.55≦X≦0.70, and the grain size Dis 0.1 μm or less in the (TiAl)(CN) layer near the interface between the body and the complex carbonitride layer. The Al content X0.80≦X≦0.95 and the average grain size Dis 0.5 μm to 2 μm in the (TiAl)(CN) layer near the outer surface side. Furthermore, the Al content ratio and the grain size in the (TiAl)(CN) layer gradually increase to the outer surface side.