Title:
METHOD FOR PRODUCING ANISOTROPIC MAGNETIC POWDER
Document Type and Number:
Japanese Patent JP2021055188
Kind Code:
A
Abstract:
To provide a method for producing an anisotropic magnetic powder excellent in magnetic properties.SOLUTION: There is provided a method for producing an anisotropic magnetic powder including the steps of: mixing iron oxide particles having an average particle diameter of 0.1 μm or more and 0.4 μm or less with oxide particles of R having an average particle diameter of 0.5 μm or more and 0.8 μm or less (R is at least one kind selected from the group consisting of Sc, Y, Pr, Nd, Pm, Sm, Gd, Tb, Dy, Ho, Er, Tm, Lu) to obtain a mixture; heat-treating the mixture under a reducing gas atmosphere to obtain partial oxide; obtaining alloy particles by reducing the partial oxide; and obtaining an anisotropic magnetic powder by nitriding the alloy particles.SELECTED DRAWING: None
Inventors:
SASAKI TAKAHIRO
MAEHARA HISASHI
MAEHARA HISASHI
Application Number:
JP2020162230A
Publication Date:
April 08, 2021
Filing Date:
September 28, 2020
Export Citation:
Assignee:
NICHIA KAGAKU KOGYO KK
International Classes:
B22F9/20; B22F1/00; H01F1/059; H01F41/02
Attorney, Agent or Firm:
Atomi International Patent Office