Title:
Ｒ−Ｔ−Ｂ系焼結磁石の製造方法
Document Type and Number:
Japanese Patent JP6743650
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To manufacture an R-T-B based sintered magnet by using a RH diffusion source, capable of cost reduction and having high Himprovement effect, as diffusion source for diffusing RH to the R-T-B based sintered magnet.SOLUTION: A manufacturing method of R-T-B based sintered magnet includes a step of preparing an R-T-B based sintered magnet, and a step of performing heat treatment of the R-T-B based sintered magnet, in a state where the powder of RLM1M2 alloy (RL is one kind or more selected from Nd, Pr, and M1, M2 are one kind or more selected from Cu, Fe, Ga, Co, Ni, Al, M1=M2 is acceptable), and the powder of RH carbonate (RH is Dy and/or Tb) exist on the surface of the R-T-B based sintered magnet.SELECTED DRAWING: None
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Inventors:
Shuji Mino
Application Number:
JP2016210420A
Publication Date:
August 19, 2020
Filing Date:
October 27, 2016
Export Citation:
Assignee:
Hitachi Metals Co., Ltd.
International Classes:
H01F41/02; B22F1/00; B22F3/00; B22F3/24; H01F1/057
Domestic Patent References:
| JP2000144275A |
Foreign References:
| WO2015163397A1 | ||||
| WO2015122422A1 | ||||
| WO2007119846A1 |
Attorney, Agent or Firm:
Seiji Okuda
Osamu Kita
Michi Kajitani
Osamu Kita
Michi Kajitani