Title:
R-T-B PERMANENT MAGNETIC MATERIAL, PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/199232
Kind Code:
A1
Abstract:
Disclosed are an R-T-B permanent magnetic material, a preparation method therefor and the use thereof. The R-T-B permanent magnetic material comprises the following components by mass content: 26.5 to 32.0 mass percentage of R, R being a rare earth element containing at least Nd; 0.58 to 0.65 mass percentage of Cu; 0.21 to 0.33 mass percentage of Ga; B ≥ 0.99 mass percentage; 64.0 to 69.5 mass percentage of Fe; and 0.15 to 1.2 mass percentage of N, N being one or more of Zr, Ti, Nb and Hf. The percentage is the mass percentage of the mass of each component in the total mass of the R-T-B permanent magnetic material. In the present invention, the R-T-B permanent magnet material has uniformly distributed heavy rare earth elements, excellent magnet performance and a uniform performance.
Inventors:
QUAN QICHEN (CN)
CHEN DAKUN (CN)
HUANG QINGFANG (CN)
FU GANG (CN)
HUANG JIAYING (CN)
XU DEQIN (CN)
CHEN DAKUN (CN)
HUANG QINGFANG (CN)
FU GANG (CN)
HUANG JIAYING (CN)
XU DEQIN (CN)
Application Number:
PCT/CN2022/072254
Publication Date:
September 29, 2022
Filing Date:
January 17, 2022
Export Citation:
Assignee:
FUJIAN CHANGTING GOLDEN DRAGON RARE EARTH CO LTD (CN)
International Classes:
H01F1/057; H01F41/02
Foreign References:
| CN113066625A | 2021-07-02 | |||
| CN111223627A | 2020-06-02 | |||
| CN111636035A | 2020-09-08 | |||
| CN107871581A | 2018-04-03 | |||
| CN111613407A | 2020-09-01 | |||
| US20060201585A1 | 2006-09-14 | |||
| CN111724955A | 2020-09-29 |
Attorney, Agent or Firm:
SHANGHAI JOINT-WIN LAW FIRM (CN)
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