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:
Mar. 26, 2019
Filed:
Dec. 19, 2014
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Noritsugu Sakuma, Toyota, JP;
Tetsuya Shoji, Toyota, JP;
Daisuke Sakuma, Toyota, JP;
Kazuaki Haga, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
Abstract
A manufacturing method includes: manufacturing a sintered compact having a composition of (Rl)(Rh)TBM; manufacturing a precursor by performing hot deformation processing on the sintered compact; and manufacturing a rare earth magnet by performing an aging treatment on the precursor in a temperature range of 450° C. to 700° C. In this method, a main phase thereof is formed of a (RlRh)TB phase. A content of a (RlRh)TBphase in a grain boundary phase thereof is more than 0 mass % and 50 mass % or less. Rl represents a light rare earth element. Rh represents a heavy rare earth element. T represents a transition metal. M represents at least one of Ga, Al, Cu, and Co. x, y, z, s, and t are percentages by mass of Rl, Rh, T, B, and M. x, y, z, s, and t are expressed by the following expressions: 27≤x≤44, 0≤y≤10, z=100−x−y−s−t, 0.75≤s≤3.4, 0≤t≤3.