Title:
R-T-B MAGNET AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/193818
Kind Code:
A1
Abstract:
Disclosed are an R-T-B magnet and a manufacturing method therefor. The R-T-B magnet comprises the following components: R: ≥ 30.0 wt.%, R being a rare earth element, Nb: 0.02-0.14 wt.%; Cu: 0.2-0.48 wt.%; Ti + Nb: ≤ 0.24 wt.%; Al + Cu: ≤ 0.50 wt.%; B: ≥ 0.955 wt.%; and Fe: 58-69 wt.%; wt.% being the percentage of the total mass of the components that the mass of each component accounts. The remanence, coercivity, and squareness of the R-T-B magnet of the present invention are at improved levels.
Inventors:
MOU WEIGUO (CN)
HUANG JIAYING (CN)
HUANG JIAYING (CN)
Application Number:
PCT/CN2022/072251
Publication Date:
September 22, 2022
Filing Date:
January 17, 2022
Export Citation:
Assignee:
FUJIAN CHANGTING GOLDEN DRAGON RARE EARTH CO LTD (CN)
International Classes:
H01F1/057; H01F1/055; H01F41/02
Foreign References:
| CN112992461A | 2021-06-18 | |||
| CN101266856A | 2008-09-17 | |||
| CN101404196A | 2009-04-08 | |||
| CN103824668A | 2014-05-28 | |||
| US20170335478A1 | 2017-11-23 | |||
| CN110957092A | 2020-04-03 | |||
| CN102299000A | 2011-12-28 | |||
| CN108831650A | 2018-11-16 |
Attorney, Agent or Firm:
SHANGHAI JOINT-WIN LAW FIRM (CN)
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