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. 25, 2014
Filed:
Feb. 22, 2012
Hidemitsu Takaoka, Naka-gun, JP;
Akira Osada, Moriya, JP;
Naoki Wakiya, Hamamatsu, JP;
Hisao Suzuki, Toyohashi, JP;
Kazuo Shinozaki, Inagi, JP;
Hidemitsu Takaoka, Naka-gun, JP;
Akira Osada, Moriya, JP;
Naoki Wakiya, Hamamatsu, JP;
Hisao Suzuki, Toyohashi, JP;
Kazuo Shinozaki, Inagi, JP;
Mitsubishi Materials Corporation, Tokyo, JP;
National University Corporaiton Shizuoka University, Shizuoka-Shi, JP;
Tokyo Institute of Technology, Tokyo, JP;
Abstract
A method of manufacturing a surface-coated cutting tool includes: forming an aluminum oxide layer having a layer thickness of 0.05 to 5 μm and an α-alumina structure with a corundum type crystal structure on a cutting tool body using a sol-gel method. The step of forming includes adding an alcohol to aluminum alkoxide; adding an acid; stirring the mixture at 10° C. or lower to form a sol; applying the sol on a surface of the cutting tool body or an outer-most surface of a hard-coating layer formed on the surface of the cutting tool body; performing a drying process at least once, the applied sol being dried at 100 to 400° C. in the drying process; and annealing the cutting tool body with a dried sol layer at 500 to 1000° C.