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:
Apr. 07, 2015
Filed:
Dec. 14, 2011
Hideki Moriguchi, Itami, JP;
Hiroka Aoyama, Itami, JP;
Yoshiharu Utsumi, Itami, JP;
Hidetoshi Fujii, Suita, JP;
Yoshiaki Morisada, Osaka, JP;
Hideki Moriguchi, Itami, JP;
Hiroka Aoyama, Itami, JP;
Yoshiharu Utsumi, Itami, JP;
Hidetoshi Fujii, Suita, JP;
Yoshiaki Morisada, Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Osaka University, Suita-shi, JP;
Osaka Municipal Technical Research Institute, Osaka-shi, JP;
Abstract
There is provided a tool for friction stir welding, in which a coating layer is less likely to peel off from a base material and excellent wear resistance is achieved. The tool for friction stir welding according to the present invention includes a base material (BM) and a coating layer. The BM includes a first hard phase (FP) formed by WC particles, a second hard phase (SP) and a binder phase (BP). The SP is formed by a compound of one or more metals selected from Ti, Zr, Hf, Nb, Ta, Cr, Mo, and W and one or more elements selected from nitrogen, carbon, boron, and oxygen, and is included in the BM at a volume ratio of 3% to 30%. The BP is included in the BM at a volume ratio of 8% to 28%. The FP is higher than the SP in terms of volume ratio.