Title:
NEODYMIUM-IRON-BORON MAGNET MATERIAL, RAW MATERIAL COMPOSITION, PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/098225
Kind Code:
A1
Abstract:
Disclosed are a neodymium-iron-boron magnet material, a raw material composition, a preparation method therefor and a use thereof. The raw material composition of the neodymium-iron-boron magnet material comprises the following components by mass percentage: 29.5-32.8% of R', wherein R' includes Pr and Nd, and Pr ≥ 17.15%; Al ≥ 0.5%; 0.90-1.2% of B; and 60-68% of Fe. The percentages are the mass percentages relative to the total mass of the raw material composition of the neodymium-iron-boron magnet material. Without adding a heavy rare earth element to the neodymium-iron-boron magnet material, the performance of the neodymium-iron-boron magnet material can still be significantly improved.
Inventors:
FU GANG (CN)
HUANG JIAYING (CN)
HUANG JIXIANG (CN)
QUAN QICHEN (CN)
HUANG JIAYING (CN)
HUANG JIXIANG (CN)
QUAN QICHEN (CN)
Application Number:
PCT/CN2020/100588
Publication Date:
May 27, 2021
Filing Date:
July 07, 2020
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:
| CN110797157A | 2020-02-14 | |||
| CN105513737A | 2016-04-20 | |||
| CN103366918A | 2013-10-23 | |||
| CN104064346A | 2014-09-24 | |||
| CN106128673A | 2016-11-16 | |||
| CN103077796A | 2013-05-01 | |||
| JP2019169542A | 2019-10-03 | |||
| JP2018056334A | 2018-04-05 | |||
| JP2013225533A | 2013-10-31 |
Other References:
See also references of EP 4016557A4
Attorney, Agent or Firm:
SHANGHAI JOINT-WIN LAW FIRM (CN)
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