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:
Sep. 30, 2014
Filed:
Oct. 19, 2009
Masahiro Waki, Satsumasendai, JP;
Masahiro Waki, Satsumasendai, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
Provided is a surface-coated tool, such as a cutting tool, in which a surface of a substrateis coated with a coating layer. The coating layercomprises a lower layerand an upper layer. The lower layerand the upper layerare both composed of columnar particlesextending vertically with respect to the surface of the substrate. The mean crystal width of the columnar particlesconstituting the upper layeris smaller than the mean crystal width of the columnar particles constituting the lower layer. Dispersed particles containing tungsten exist in both the lower layer and the upper layer. The distribution density of the dispersed particles existing in the upper layer is smaller than the distribution density of the dispersed particles existing in the lower layer. The surface-coated tool includes the coating layer to improve wear resistance and fracture resistance.