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. 19, 2019
Filed:
Sep. 01, 2016
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Toshiba Materials Co., Ltd., Yokohama-shi, Kanagawa, JP;
Masaya Hagiwara, Yokohama Kanagawa, JP;
Shinya Sakurada, Shinagawa Tokyo, JP;
Yosuke Horiuchi, Minato Tokyo, JP;
Tadahiko Kobayashi, Yokohama Kanagawa, JP;
Tsuyoshi Kobayashi, Kawasaki Kanagawa, JP;
Masaki Endo, Minato Tokyo, JP;
Naoyuki Sanada, Yokohama Kanagawa, JP;
Masami Okamura, Yokohama Kanagawa, JP;
Takao Sawa, Yokohama Kanagawa, JP;
Keiichi Fuse, Yokohama Kanagawa, JP;
Satoru Habu, Yokohama Kanagawa, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA MATERIALS CO., LTD., Yokohama-shi, JP;
Abstract
A permanent magnet of the embodiment includes: a composition represented by a composition formula: R(FeMCuCCo)(R is at least one element selected from rare-earth elements, M is at least one element selected from Ti, Zr and Hf, 0.27≤p≤0.45, 0.01≤q≤0.05, 0.01≤r≤0.1, 0.002≤t≤0.03, and 6≤z≤9); and a metallic structure including a main phase containing a ThZncrystal phase, and a sub phase of the element M having an element M concentration of 30 atomic % or more. The sub phase of the element M precipitates in the metallic structure. A ratio of a circumferential length to a precipitated area of the sub phase of the element M is 1 or more and 10 or less.