Title:
RARE EARTH PERMANENT MAGNET MATERIAL, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/169903
Kind Code:
A1
Abstract:
A rare earth permanent magnet material, a preparation method therefor, and an application thereof. The rare earth permanent magnet material contains: R, Ga, Al, Fe, and B, also contains one or more of Ti, Zr, and Nb, and contains the following according to weight percentage: the content of R is 28.5-33.05%, the content of Ga is greater than 0.35%, the content of B is 0.84-0.945%, the content of Al is less than 0.08%, and an R-T-B permanent magnet material does not contain Co. The rare earth permanent magnet material has high coercivity Hcj and Br, a stable magnet temperature, and an excellent performance. In addition, the demagnetization curve thereof is step-less, the relative magnetic permeability is low, and the magnetic steel uniformity is good.
Inventors:
FU GANG (CN)
HUANG JIAYING (CN)
HUANG QINGFANG (CN)
HUANG JIXIANG (CN)
HUANG JIAYING (CN)
HUANG QINGFANG (CN)
HUANG JIXIANG (CN)
Application Number:
PCT/CN2021/077195
Publication Date:
September 02, 2021
Filing Date:
February 22, 2021
Export Citation:
Assignee:
XIAMEN TUNGSTEN CO LTD (CN)
FUJIAN CHANGTING GOLDEN DRAGON RARE EARTH CO LTD (CN)
FUJIAN CHANGTING GOLDEN DRAGON RARE EARTH CO LTD (CN)
International Classes:
H01F1/057; H01F41/02
Foreign References:
| CN105960690A | 2016-09-21 | |||
| CN110853855A | 2020-02-28 | |||
| CN110537235A | 2019-12-03 | |||
| CN106024235A | 2016-10-12 | |||
| CN111243810A | 2020-06-05 | |||
| CN104395971A | 2015-03-04 | |||
| US20110025440A1 | 2011-02-03 |
Attorney, Agent or Firm:
SHANGHAI JOINT-WIN LAW FIRM (CN)
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