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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.:

US 10256018 B1

PDFFull Text
Date of Patent:
Apr. 09, 2019

Filed:

Feb. 12, 2015

Cast rare earth-containing alloy sheet, manufacturing method therefor, and sintered magnet

Applicant:

Santoku Corporation, Kobe-shi, Hyogo, JP;

Inventor:

Yasutomo Matsumoto, Kobe, JP;

Assignee:

SANTOKU CORPORATION, Kobe-shi, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

C Melissa Koslow

Int. Cl.
CPC ...
B22F 1/00 (2006.01); B22F 3/16 (2006.01); B22F 9/04 (2006.01); B22F 9/08 (2006.01); B22F 9/22 (2006.01); C21D 6/00 (2006.01); B22D 11/06 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/10 (2006.01); C22C 38/16 (2006.01); C22C 38/28 (2006.01); C23C 10/20 (2006.01); C23C 10/60 (2006.01); C23C 16/06 (2006.01); C23C 16/44 (2006.01); H01F 1/057 (2006.01); H01F 41/02 (2006.01);
U.S. Cl.
CPC ...
H01F 1/0577 (2013.01); B22D 11/06 (2013.01); B22F 1/0055 (2013.01); B22F 3/16 (2013.01); B22F 9/04 (2013.01); B22F 9/08 (2013.01); B22F 9/22 (2013.01); C21D 6/007 (2013.01); C21D 6/008 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); C22C 38/10 (2013.01); C22C 38/16 (2013.01); C22C 38/28 (2013.01); C23C 10/20 (2013.01); C23C 10/60 (2013.01); C23C 16/06 (2013.01); C23C 16/4417 (2013.01); H01F 41/0293 (2013.01); B22F 2009/044 (2013.01); B22F 2301/355 (2013.01); B22F 2998/10 (2013.01);
Abstract

Rare earth-containing alloy flakes and a sintered magnet made of the same are provided, which alloy flakes are useful in the production of sintered magnets of which Br and HcJ may be excellent and well-balanced according to the Dy and/or Tb content. The rare earth-containing alloy flakes are R-TM-A-M-type alloy flakes which have a particular composition, and a structure having a NdFeB main phase and a boundary phase, the Fe content in the boundary phase is not more than 10 mass %, and a ratio of the total content (b) of Dy and Tb in the boundary phase to the total content (a) of Dy and Tb in the main phase is higher than 1.0, and are useful as a sintered magnet material.

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