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. 21, 2021
Filed:
Jul. 07, 2017
Sumitomo Electric Hardmetal Corp., Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Anongsack Paseuth, Sorachi-gun, JP;
Yasuki Kido, Sorachi-gun, JP;
Shinya Imamura, Sorachi-gun, JP;
Koji Kuramochi, Itami, JP;
Sumitomo Electric Hardmetal Corp., Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A surface-coated cutting tool includes a substrate and a coating formed on a surface of the substrate, the coating including one or two or more layers, at least one of the layers being an Al-rich layer including hard particles, the hard particle having a sodium chloride type crystal structure, and including a first unit phase in a form of a plurality of lumps and a second unit phase interposed between the lumps of the first unit phase, the first unit phase being composed of a nitride or carbonitride of AlTi, the first unit phase having an atomic ratio x of Al of 0.7 or more and 0.96 or less, the second unit phase being composed of a nitride or carbonitride of AlTi, the second unit phase having an atomic ratio y of Al exceeding 0.5 and less than 0.7.