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:
Aug. 11, 2020
Filed:
Apr. 05, 2017
Tungaloy Corporation, Fukushima, JP;
Yusuke Hirano, Iwaki, JP;
Hirosato Nishizawa, Iwaki, JP;
TUNGALOY CORPORATION, Iwaki-shi, Fukushima, JP;
Abstract
Provided is a coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate. The coating layer includes an alternating laminate structure of an alternating laminate of: a first composite nitride layer including a compound having a composition represented by (TiAl)N (wherein x denotes an atomic ratio of the Ti element based on a total of the Ti element and the Al element and satisfies 0.10≤x≤0.35); and a second composite nitride layer including a compound having a composition represented by (TiAlM)N (wherein: M denotes an element of at least one kind selected from Zr, Hf, V, Nb, Ta, Cr, Mo, W, Si and Y; y satisfies 0.30≤y≤0.90; z satisfies 0.10≤z≤0.70; and y and z satisfy y+z≤1). The first composite nitride layer includes a phase having a lattice constant of from 0.400 nm or more to 0.430 nm or less and a phase having a lattice constant of from 0.755 nm or more to 0.810 nm or less.