Title:
METHOD FOR MANUFACTURING SmFeN-BASED RARE EARTH MAGNET
Document Type and Number:
Japanese Patent JP2023048129
Kind Code:
A
Abstract:
To provide a method for manufacturing an SmFeN-based rare earth magnet having high magnetic characteristics.SOLUTION: A method for manufacturing an SmFeN-based rare earth magnet includes the steps of: dispersing SmFeN-based anisotropic magnetic powder containing Sm, Fe, La, W, R (R is at least one selected from the group consisting of Ti, Ba and Sr) and N using a medium of metal or ceramic coated with a resin, and obtaining the dispersed SmFeN-based anisotropic magnetic powder; mixing the dispersed SmFeN-based anisotropic magnetic powder and modified material powder, and obtaining mixed powder; compression molding the mixed powder in a magnetic filed, and obtaining a magnetic field molding; pressure sintering the magnetic molding, and obtaining a sintered body; and heat treating the sintered body.SELECTED DRAWING: Figure 1
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Inventors:
MAEHARA HISASHI
ITO MASAO
ITO MASAO
Application Number:
JP2022146192A
Publication Date:
April 06, 2023
Filing Date:
September 14, 2022
Export Citation:
Assignee:
NICHIA KAGAKU KOGYO KK
TOYOTA MOTOR CORP
TOYOTA MOTOR CORP
International Classes:
B22F3/00; B22F1/00; B22F1/05; B22F1/14; B22F1/16; B22F3/02; B22F3/14; B22F3/24; C22C23/04; H01F1/059; H01F1/08; H01F41/02
Attorney, Agent or Firm:
Patent Attorney Firm WisePlus