Title:
R-T-B MAGNET AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/193820
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: 0.1-0.3 wt.%; B: 0.955-1.2 wt.%; and Fe: 58-69 wt.%; wt.% being the percentage of the total mass of the components that the mass of each component accounts for. The R-T-B magnet also contains Co and Ti. In the R-T-B magnet, the ratio of the mass content of Co to the total mass content of "Nb and Ti" is 4-10. The present invention further optimizes the matching relations among the components of the R-T-B magnet and allows the preparation of magnet materials having high levels in magnetic properties such as remanence, coercivity, and squareness.
More Like This:
| JPH01281707 | RARE EARTH ELEMENT AND IRON BASED RESIN COMBINED MAGNET |
| JP2022098408 | MANUFACTURING METHOD OF R-T-B BASED SINTERED MAGNET |
| WO/2015/020181 | R-T-B-BASED SINTERED MAGNET AND MOTOR |
Inventors:
CHEN DAKUN (CN)
MOU WEIGUO (CN)
HUANG JIAYING (CN)
MOU WEIGUO (CN)
HUANG JIAYING (CN)
Application Number:
PCT/CN2022/072253
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
Foreign References:
| CN112992462A | 2021-06-18 | |||
| CN101582317A | 2009-11-18 | |||
| CN111312507A | 2020-06-19 | |||
| CN111223624A | 2020-06-02 | |||
| JP2009302318A | 2009-12-24 | |||
| CN106158204A | 2016-11-23 |
Attorney, Agent or Firm:
SHANGHAI JOINT-WIN LAW FIRM (CN)
Download PDF:
Previous Patent: R-T-B MAGNET AND PREPARATION METHOD THEREFOR
Next Patent: SECTIONAL TYPE FEEDING DEVICE FOR ROTARY KILN
Next Patent: SECTIONAL TYPE FEEDING DEVICE FOR ROTARY KILN