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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 10950373 B1

PDFFull Text
Date of Patent:
Mar. 16, 2021

Filed:

Dec. 08, 2014

Hot-pressed and deformed magnet comprising nonmagnetic alloy and method for manufacturing same

Applicant:

Lg Electronics Inc., Seoul, KR;

Inventors:

Seok Namkung, Seoul, KR;

Deokhai Park, Seoul, KR;

Namseok Kang, Seoul, KR;

Assignee:

LG ELECTRONICS INC., Seoul, KR;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Paul A Wartalowicz

Assistant Examiner:

Ryan L Heckman

Int. Cl.
CPC ...
H01F 1/057 (2006.01); B22F 3/14 (2006.01); C22C 28/00 (2006.01); C22C 38/00 (2006.01); C22C 12/00 (2006.01); C22C 23/06 (2006.01); C22C 38/16 (2006.01); C22C 38/10 (2006.01); C22C 21/00 (2006.01); C22C 1/04 (2006.01); C22C 33/02 (2006.01); H01F 41/02 (2006.01);
U.S. Cl.
CPC ...
H01F 1/0577 (2013.01); B22F 3/14 (2013.01); C22C 1/0475 (2013.01); C22C 12/00 (2013.01); C22C 21/00 (2013.01); C22C 23/06 (2013.01); C22C 28/00 (2013.01); C22C 33/0278 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/10 (2013.01); C22C 38/16 (2013.01); H01F 1/0576 (2013.01); H01F 41/0293 (2013.01); B22F 2998/10 (2013.01); C22C 2200/04 (2013.01); C22C 2202/02 (2013.01);
Abstract

An R-TM-B hot-pressed and deformed magnet (here, R represents a rare earth metal selected from the group consisting of Nd, Dy, Pr, Tb, Ho, Sm, Sc, Y, La, Ce, Pm, Eu, Gd, Er, Tm, Yb, Lu, and a combination thereof, and TM represents a transition metal) of the present invention comprises flat type anisotropic magnetized crystal grains and a nonmagnetic alloy distributed in a boundary surface between the crystal grains, and thus the magnet of the present invention has an excellent magnetic shielding effect as compared with an existing permanent magnet since the crystal gains can be completely enclosed in the nonmagnetic alloy, so that a hot-pressed and deformed magnet with enhanced coercive force can be manufactured through a more economical process.

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