Title:
SINTERED NEODYMIUM-IRON-BORON MAGNET AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/227278
Kind Code:
A1
Abstract:
Provided in the present invention is a sintered neodymium-iron-boron magnet as shown in a formula RxT100-x-y1-y2-zMy1Ay2Bz. The present invention specifically comprises three different solutions wherein zirconium and zirconium or niobium is added in an A alloy element and the specific addition amount is optimally designed, and the remaining components are specially designed, so that the residual magnetism, coercive force and magnetic energy product of a magnet alloy are improved, the magnet alloy has a relatively high performance, the production cost is lowered, the process is simple, and same has wide applicability and is suitable for large-scale industrial production.
Inventors:
MAO HUAYUN (CN)
MAO CONGYAO (CN)
HUANG ZHIFENG (CN)
SUN CHANGSHAN (CN)
CHEN YUNPENG (CN)
MAO CONGYAO (CN)
HUANG ZHIFENG (CN)
SUN CHANGSHAN (CN)
CHEN YUNPENG (CN)
Application Number:
PCT/CN2021/104449
Publication Date:
November 03, 2022
Filing Date:
July 05, 2021
Export Citation:
Assignee:
JL MAG RARE EARTH CO LTD (CN)
International Classes:
C22C38/14; H01F1/057; H01F41/02
Domestic Patent References:
| WO2017018291A1 | 2017-02-02 |
Foreign References:
| CN111243812A | 2020-06-05 | |||
| CN111009369A | 2020-04-14 | |||
| CN111599564A | 2020-08-28 | |||
| CN102436889A | 2012-05-02 | |||
| CN202110484517A | 2021-04-30 | |||
| CN202110486417A | 2021-04-30 | |||
| CN202110486410A | 2021-04-30 |
Other References:
See also references of EP 4105951A4
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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