Title:
NEODYMIUM-IRON-BORON MAGNET MATERIAL, RAW MATERIAL COMPOSITION, PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/218700
Kind Code:
A1
Abstract:
Disclosed are a neodymium-iron-boron magnet material, a raw material composition, a preparation method therefor and the use thereof. The raw material composition of the neodymium-iron-boron magnet material comprises a first component: LR: 13-31.5 wt%, wherein LR comprises Nd, Ho: 0-10 wt% and not being 0, Gd: 0-5 wt% and not being 0, Dy and/or Tb: 0-3 wt % and not being 0, Cu: 0-0.35 wt% and not being 0, Ga: 0-0.35 wt% and not being 0, Al: 0-0.5 wt%, X: 0.05-0.45 wt%, Co: 0-0.5 wt%, B: 0.9-1.05 wt%, and the balance being Fe; and a second component: Dy and/or Tb: 0.2-1 wt%, wherein the total rare earth content is 29.5-32.5 wt%. The neodymium-iron-boron magnet material has a high remanence, a high coercivity and good high-temperature performance.
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Inventors:
WANG JINLEI (CN)
HUANG QINGFANG (CN)
LI GUOFEI (CN)
TANG ZHIHUI (CN)
HUANG JIAYING (CN)
HUANG QINGFANG (CN)
LI GUOFEI (CN)
TANG ZHIHUI (CN)
HUANG JIAYING (CN)
Application Number:
PCT/CN2021/088314
Publication Date:
November 04, 2021
Filing Date:
April 20, 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; C22C38/06; H01F41/02
Foreign References:
| CN111524673A | 2020-08-11 | |||
| CN110853855A | 2020-02-28 | |||
| CN110619984A | 2019-12-27 | |||
| US20120280775A1 | 2012-11-08 |
Attorney, Agent or Firm:
SHANGHAI JOINT-WIN LAW FIRM (CN)
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