Title:
NEODYMIUM-IRON-BORON MAGNET MATERIAL, RAW MATERIAL COMPOSITION, AND PREPARATION METHOD AND APPLICATION OF NEODYMIUM-IRON-BORON MAGNET MATERIAL
Document Type and Number:
WIPO Patent Application WO/2021/244312
Kind Code:
A1
Abstract:
A neodymium-iron-boron magnet material, a raw material composition, and a preparation method and application of the neodymium-iron-boron magnet material. The raw material composition of the neodymium-iron-boron magnet material comprises: a first component: LR comprising Nd, 0 to 10 mass percent but not equal to 0 of Ho, 0.12 to 0.45 mass percent of C, 0.12 to 0.6 mass percent of Cu, 0 to 0.42 mass percent but not equal to 0 of Ga, 0 to 0.5 mass percent of Co, 0 to 0.5 mass percent of Al, 0.05 to 0.45 mass percent of X, 0.9 to 1.05 mass percent of B, and the balance of Fe, wherein the first component does not comprise other heavy rare earth elements except Ho; and a second component: 0.2 to 1 mass percent of Dy and/or Tb. The neodymium-iron-boron magnet material is good in grain boundary continuity, high in residual magnetism, high in coercive force, good in high-temperature performance, and good in 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/CN2021/095076
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:
H01F1/057; H01F7/02; H01F41/02
Foreign References:
| CN111613403A | 2020-09-01 | |||
| CN104240888A | 2014-12-24 | |||
| CN110828089A | 2020-02-21 | |||
| CN110993232A | 2020-04-10 | |||
| CN101582317A | 2009-11-18 | |||
| CN101404195A | 2009-04-08 | |||
| JP2015103681A | 2015-06-04 |
Attorney, Agent or Firm:
SHANGHAI JOINT-WIN LAW FIRM (CN)
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