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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.:

US 9211588 B1

PDFFull Text
Date of Patent:
Dec. 15, 2015

Filed:

Jun. 24, 2013

Surface-coated cutting tool

Applicant:

Sumitomo Electric Hardmetal Corp., Itami-shi, JP;

Inventors:

Makoto Setoyama, Itami, JP;

Akihiko Shibata, Itami, JP;

Yinxue Xiao, Itami, JP;

Akira Kobayashi, Mie-gun, JP;

Assignee:

SUMITOMO ELECTRIC HARDMETAL CORP., Itami-shi, JP;

Attorneys:

Venable LLP

Michael A. Sartori

Trent B. Ostler

Primary Examiner:

Archene Turner

Int. Cl.
CPC ...
B23B 27/14 (2006.01); C23C 14/06 (2006.01); B23B 51/00 (2006.01); B23C 5/16 (2006.01); B23B 9/00 (2006.01); C23C 14/02 (2006.01); C23C 28/04 (2006.01); C23C 28/00 (2006.01); B32B 15/01 (2006.01);
U.S. Cl.
CPC ...
B23B 27/14 (2013.01); B23B 9/00 (2013.01); B23B 51/00 (2013.01); B23C 5/16 (2013.01); B32B 15/01 (2013.01); C23C 14/024 (2013.01); C23C 14/0641 (2013.01); C23C 28/042 (2013.01); C23C 28/044 (2013.01); C23C 28/42 (2013.01); Y10T 428/2495 (2015.01); Y10T 428/24975 (2015.01); Y10T 428/25 (2015.01); Y10T 428/264 (2015.01); Y10T 428/265 (2015.01);
Abstract

A surface-coated cutting tool according to the present invention is a surface-coated cutting tool including a base material and a coating film formed on the base material, wherein the coating film includes at least a wear-resistant layer and an adhesion-resistant layer, the wear-resistant layer has a multilayer structure in which an A layer of a nitride containing Ti and Al as well as a B layer of a nitride containing Al and Cr are alternately stacked, and has a cubic crystal structure, and the adhesion-resistant layer is located at an outermost surface of the coating film, is composed of a nitride expressed by (AlCrTi)N (wherein a+b<0.99, b>0.01, and 0.2b+0.7<a), and has a wurtzite-type crystal structure.

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