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:
Aug. 24, 2021
Filed:
Aug. 04, 2017
Osaka University, Suita, JP;
Toshiba Materials Co., Ltd., Yokohama, JP;
Hidetoshi Fujii, Ibaraki Osaka, JP;
Yoshiaki Morisada, Ibaraki Osaka, JP;
Kai Funaki, Kanagawa, JP;
Isao Ikeda, Kanagawa, JP;
Yutaka Abe, Kanagawa, JP;
Masahiro Kato, Kanagawa, JP;
OSAKA UNIVERSITY, Suita, JP;
TOSHIBA MATERIALS CO., LTD., Yokohama, JP;
Abstract
The friction stir welding tool member according to the present invention is made of a silicon nitride sintered body, wherein the silicon nitride sintered body contains 15% by mass or less of additive components except silicon nitride in such a manner that the additive components include at least one element selected from lanthanoid elements and at least one element selected from Mg, Ti, Hf, and Mo. In addition, it is preferable that the additive components further include at least one element selected from Al, Si, and C. According to the above-described configuration, a friction stir welding tool member having an excellent durability can be provided.