Title:
NEODYMIUM-IRON-BORON MAGNET MATERIAL, RAW MATERIAL COMPOSITION THEREOF, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/244311
Kind Code:
A1
Abstract:
Disclosed in the present invention are a neodymium-iron-boron magnet material, a raw material composition thereof, a preparation method therefor, and an application thereof. The raw material composition of the neodymium-iron-boron magnet material contains: a first component: a light rare earth element (LR), wherein the LR comprises: Nd; Ho: 0-10 mas%, not including 0 mas%; Cu: 0.35-0.6 mas%; C: 0-0.32 mas%; Ga: 0-0.42 mas%, not including 0 mas%; Co: 0-0.5 mas%; Al: 0-0.5 mas%; X: 0.05-0.5 mas%; B: 0.9-1.05 mas%; and the balance of Fe, and the first component does not comprise other heavy rare earth elements in addition to Ho; and a second component: Dy and/or Tb: 0.2-1 mas%. The neodymium-iron-boron magnet material in the present invention has good grain boundary continuity, high remanence, high coercivity, excellent high-temperature performance, and excellent corrosion resistance.
Inventors:
WANG JINLEI (CN)
HUANG JIAYING (CN)
LI GUOFEI (CN)
TANG ZHIHUI (CN)
HUANG QINGFANG (CN)
HUANG JIAYING (CN)
LI GUOFEI (CN)
TANG ZHIHUI (CN)
HUANG QINGFANG (CN)
Application Number:
PCT/CN2021/095073
Publication Date:
December 09, 2021
Filing Date:
May 21, 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:
B22F1/00; H01F1/057; C22C33/02; C22C38/00; C22C38/04; C22C38/06; C22C38/10; C22C38/12; C22C38/14; C22C38/16; H01F41/02
Foreign References:
| CN111599565A | 2020-08-28 | |||
| CN107871602A | 2018-04-03 | |||
| CN107039135A | 2017-08-11 |
Attorney, Agent or Firm:
SHANGHAI JOINT-WIN LAW FIRM (CN)
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