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:
Jul. 28, 2015
Filed:
Jan. 27, 2012
Kazuaki Senbokuya, Naka-gun, JP;
Yusuke Tanaka, Tokyo, JP;
Kazuaki Senbokuya, Naka-gun, JP;
Yusuke Tanaka, Tokyo, JP;
MITSUBISHI MATERIALS CORPORATION, Tokyo, JP;
Abstract
A surface-coated cutting tool having excellent fracture resistance and wear resistance is provided. In the surface-coated cutting tool having at least a hard coating layer made of an (Al, Cr)N layer with a layer thickness of 0.5 μm to 10 μm formed to coat on the surface of a cutting tool body made of a WC cemented carbide, pores and droplets are dispersed and distributed in the (Al, Cr)N layer, the occupied area ratio of the pores and the occupied area ratio of the droplets in a cross-section of the (Al, Cr)N layer are 0.5 to 1 area % and 2 to 4 area % respectively, and, furthermore, out of the droplets, Al-rich droplets having a higher Al content ratio than the average Al content ratio of the (Al, Cr)N layer occupy 20 area % or more of the total droplet area.