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:
May. 25, 2021
Filed:
Sep. 09, 2019
Tungaloy Corporation, Fukushima, JP;
Takao Katagiri, Iwaki, JP;
TUNGALOY CORPORATION, Fukushima, JP;
Abstract
A coated cutting tool comprising a substrate and a coating layer formed on the substrate, wherein: the coating layer includes a first composite nitride layer containing a compound having a composition represented by (AlCr)N, and a second composite nitride layer containing a compound having a composition represented by (AlCr)N; an average particle size of particles which constitute of the first composite nitride layer is less than 100 nm; the second composite nitride layer comprises a cubic crystal system, and a ratio I(111)/I(200) of a peak intensity I(111) for a (111) plane to a peak intensity I(200) for a (200) plane in the second composite nitride layer is 1.0 or more; an average particle size of particles which constitute of the second composite nitride layer is 100 nm or more; and a residual stress of the second composite nitride layer is from −10.0 GPa or higher to −2.0 GPa or lower.