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:
Jan. 20, 2015
Filed:
Dec. 14, 2011
Hiroka Aoyama, Itami, JP;
Hideki Moriguchi, Itami, JP;
Yoshiharu Utsumi, Itami, JP;
Hidetoshi Fujii, Suita, JP;
Yoshiaki Morisada, Osaka, JP;
Hiroka Aoyama, Itami, JP;
Hideki Moriguchi, 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, unknown;
Osaka Municipal Technical Research Institute, Osaka-shi, JP;
Abstract
There is provided a tool for friction stir welding having excellent wear resistance and chipping resistance. The tool for friction stir welding according to the present invention includes a base material, the base material includes a first hard phase, a second hard phase and a binder phase, the first hard phase is formed by WC particles, the second hard phase is formed by a compound of one or more metals selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W and one or more elements selected from the group consisting of nitrogen, carbon, boron, and oxygen, or a solid solution of the compound (except for WC), the binder phase is formed by an iron group metal, and the second hard phase is higher than or identical to the first hard phase in terms of volume ratio.