Title:
Ｎｄ－Ｆｅ－Ｂ系焼結磁性体の製造方法
Document Type and Number:
Japanese Patent JP7170377
Kind Code:
B2
Abstract:
The present disclosure relates to a method for preparing high-performance sintered NdFeB magnets. The method comprises the steps of:a) attaching a multi-element alloy powder onto a surface of the sintered NdFeB magnet, wherein the multi-element alloy is of formula (1) PraRHbGacCud (1)with RH being at least one element selected from Dy and Tb anda, b, c, and d satisfying the conditions 0.30 ≤ (a+b)/(a+b+c+d) ≤ 0.65, 0.20 ≤ d/(c+d) ≤ 0.50, and 0.23 ≤ b/(a+b) ≤ 0.60; andb) performing a diffusion process.
Inventors:
Chen Xiu Lei
Jin Jie
Tokichi
Kokai
Jin Jie
Tokichi
Kokai
Application Number:
JP2021111598A
Publication Date:
November 14, 2022
Filing Date:
July 05, 2021
Export Citation:
Assignee:
Smokedai Tosei Magnetic Materials Co., Ltd.
International Classes:
H01F41/02; B22F1/00; B22F3/00; B22F3/24; B22F9/04; C22C30/02; C23C10/30; H01F1/057
Domestic Patent References:
| JP2019062153A | ||||
| JP2017130645A |
Foreign References:
| WO2018034264A1 | ||||
| CN105355353B | ||||
| WO2018062174A1 |
Attorney, Agent or Firm:
Kenji Hidaka