Title:
NEODYMIUM-IRON-BORON MAGNET MATERIAL AND PREPARATION METHOD THEREFOR AND USE THEREOF, AND MOTOR
Document Type and Number:
WIPO Patent Application WO/2023/207021
Kind Code:
A1
Abstract:
Disclosed in the present invention are a neodymium-iron-boron magnet material and a preparation method therefor and the use thereof, and a motor. The neodymium-iron-boron magnet material of the present invention comprises an amorphous RE-rich phase located in a grain boundary phase, wherein the composition and atomic ratio of elements in the amorphous RE-rich phase are that TM : RE : Cu : Ga = (15-30) : (40-60) : (10-25) : (10-30); the volume ratio of the amorphous RE-rich phase to the grain boundary phase is 3-8%; and TM is Fe and Co, and RE is a rare earth element. The neodymium-iron-boron magnet material of the present invention can improve coercivity without using heavy rare earth elements while maintaining higher residual magnetism and a higher magnetic energy product.
Inventors:
MOU WEIGUO (CN)
WANG CHEN (CN)
HUANG ZHIGAO (CN)
FU GANG (CN)
XU DEQIN (CN)
WANG CHEN (CN)
HUANG ZHIGAO (CN)
FU GANG (CN)
XU DEQIN (CN)
Application Number:
PCT/CN2022/129744
Publication Date:
November 02, 2023
Filing Date:
November 04, 2022
Export Citation:
Assignee:
FUJIAN CHANGTING GOLDEN DRAGON RARE EARTH CO LTD (CN)
International Classes:
H01F1/057; H01F41/02
Foreign References:
| CN113871122A | 2021-12-31 | |||
| CN1805072A | 2006-07-19 | |||
| CN111312461A | 2020-06-19 | |||
| CN111091945A | 2020-05-01 | |||
| CN101026034A | 2007-08-29 | |||
| CN107369512A | 2017-11-21 | |||
| US20170140856A1 | 2017-05-18 |
Attorney, Agent or Firm:
SHANGHAI JOINT-WIN LAW FIRM (CN)
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