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 JP7342281
Kind Code:
B2
Abstract:
Disclosed are a neodymium-iron-boron magnet material, a raw material composition, a preparation method therefor and a use thereof. The raw material composition of the neodymium-iron-boron magnet material comprises the following components in weight content: R: 28-33%; R being rare earth elements, and comprising R1 and R2, R1 being a rare earth element added during smelting, R1 comprising Nd and Dy, R2 being a rare earth element added during grain boundary diffusion, R2 comprising Tb, and the content of R2 being 0.2-1%; M: ≤0.4% but not 0, M being one or more elements among Bi, Sn, Zn, Ga, In, Au and Pb; Cu: ≤0.15% but not 0; B: 0.9-1.1%; Fe: 60-70%; but not containing Co. The neodymium-iron-boron magnet material under the condition of adding a small amount of heavy rare earth elements and not adding cobalt, can still have a relatively high coercivity and remanence, and excellent thermal stability.
Inventors:
Luo Inn
Hiromune Munehiro
Aikoto
Huang Jiahing
Master Great Wei
Lin Rin
Shagiku Flower
Ryugansei
Hiromune Munehiro
Aikoto
Huang Jiahing
Master Great Wei
Lin Rin
Shagiku Flower
Ryugansei
Application Number:
JP2022545011A
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 | ||||
| JP2011049441A | ||||
| JP2007294917A |
Foreign References:
| CN103745823A | ||||
| CN106920669A |
Attorney, Agent or Firm:
Naoya Ogyo
Hideharu Watanabe
Hideharu Watanabe