Title:
ネオジム鉄ホウ素磁石材料
Document Type and Number:
Japanese Patent JP7470805
Kind Code:
B2
Abstract:
Provided in the present invention are a neodymium-iron-boron magnet material, a raw material composition, a preparation method therefor and a use thereof. The raw material composition comprises: R: 28-33 wt%, R 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 wt% - 1 wt%; M: ≤ 0.4 wt% and not 0 wt%, M being one or more elements from among Ti, Ni, V, Nb, Ta, Cr, Mo, W, Mn, Zr, Hf, and Ag; Cu: ≤ 0.15 wt% and not 0 wt%; B: 0.9-1.1 wt%; Fe: 60 wt% - 70.88 wt%. The raw material composition does not contain Co. The magnet material of the present invention features the advantages of high remanence, high coercivity, and excellent high-temperature performance.
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:
JP2022547174A
Publication Date:
April 18, 2024
Filing Date:
February 22, 2021
Export Citation:
Assignee:
Fujian Jinlong Rare Earth Co., Ltd.
International Classes:
H01F1/057; B22F1/00; B22F3/00; B22F9/04; C21D6/00; C21D9/00; C22C33/02; C22C38/00; H01F41/02
Domestic Patent References:
| JP2007305878A | ||||
| JP2018093202A | ||||
| JP2018174312A | ||||
| JP2020161811A |
Foreign References:
| CN103745823A | ||||
| WO2014034650A1 | ||||
| WO2013108830A1 | ||||
| WO2018143230A1 |
Attorney, Agent or Firm:
Naoya Ogyo