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:
Apr. 14, 2020
Filed:
Oct. 27, 2016
Mitsubishi Materials Corporation, Tokyo, JP;
MITSUBISHI MATERIALS CORPORATION, Tokyo, JP;
Abstract
A surface-coated cutting tool includes a tool body and a hard coating layer including a lower layer and an upper layer. The lower layer is made of a complex nitride layer of Al, Ti, and Si with the thickness of 0.3 to 3.0 μm. It satisfies 0.3≤α≤0.5 and 0.01≤β≤0.10 (atomic ratio) being expressed by (AlTiSi)N. The upper layer is made of a complex nitride layer of Al, Cr, Si, and Cu with the thickness of 0.5 to 5.0 μm. It satisfies 0.15≤a≤0.40, 0.05≤b≤0.20, and 0.005≤c≤0.05 (atomic ratio) being expressed by (AlCrSiCu)N. The upper layer is made of crystals having a hexagonal structure, and a half width of a diffraction peak of a (110) plane present in a range of 2θ=55° to 65° is 1.0° to 3.5°.