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:
Nov. 28, 2017
Filed:
Aug. 28, 2015
Sumitomo Electric Hardmetal Corp., Itami-shi, JP;
Shinya Imamura, Sorachi-gun, JP;
Anongsack Paseuth, Sorachi-gun, JP;
Takanori Detani, Sorachi-gun, JP;
Hideaki Kanaoka, Sorachi-gun, JP;
Sumitomo Electric Hardmetal Corp., Itami-shi, JP;
Abstract
A surface-coated cutting tool according to the present invention includes a coating. The coating has an α-AlOlayer. The α-AlOlayer includes a lower layer portion and an upper layer portion. When respective crystal orientations of crystal grains of α-AlOare specified by performing EBSD analyses with an FE-SEM on a cross-section obtained when the α-AlOlayer is cut along a plane including a normal line of a surface of the α-AlOlayer and a color map is prepared based on the crystal orientations, in the color map, an area in the upper layer portion occupied by the crystal grains of which normal direction of a (001) plane is within ±10° with respect to a normal direction of the surface of the α-AlOlayer is equal to or more than 90%, and such an area in the lower layer portion is equal to or less than 50%.