Title:
ネオジム鉄ホウ素磁石材料、原料組成物及び製造方法、並びに応用
Document Type and Number:
Japanese Patent JP7342280
Kind Code:
B2
Abstract:
Provided are a neodymium-iron-boron magnet material, raw material composition, preparation method, and application. The raw material composition of the neodymium-iron-boron magnet material comprises the following mass content components: R: 28-33%; R is a rare earth element, R comprises R1 and R2; R1 is a rare earth element added during smelting, and R1 comprises Nd and Dy; R2 is a rare earth element added during grain boundary diffusion, R2 comprises Tb, the content of R2 is 0.2%-1%; Co: < 0.5%, but not 0; M: ≤ 0.4%, but not 0, and M is one or more of Bi, Sn, Zn, Ga, In, Au, and Pb; Cu: ≤ 0.15%, but not 0; B: 0.9-1.1%; Fe: 60-70%; the percentage is the mass percentage of the mass of each component to the total mass of the raw material composition. The neodymium-iron-boron magnet material has high remanence, coercivity, and good thermal stability.
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Inventors:
Luo Inn
Huang Jiahing
Hiromune Munehiro
Aikoto
Lin Rin
Master Great Wei
Shagiku Flower
Ryugansei
Huang Jiahing
Hiromune Munehiro
Aikoto
Lin Rin
Master Great Wei
Shagiku Flower
Ryugansei
Application Number:
JP2022545010A
Publication Date:
September 11, 2023
Filing Date:
February 22, 2021
Export Citation:
Assignee:
Fujiang Changting Golden Dragon Rare-Earth Company Limited
International Classes:
H01F1/057; C21D6/00; C22C38/00; H01F41/02
Domestic Patent References:
| JP2020092121A | ||||
| JP2016184720A | ||||
| JP2007294917A |
Foreign References:
| CN103745823A |
Attorney, Agent or Firm:
Naoya Ogyo
Hideharu Watanabe
Hideharu Watanabe