Title:
ネオジム鉄ホウ素磁石材料、原料組成物、及び製造方法
Document Type and Number:
Japanese Patent JP7470804
Kind Code:
B2
Abstract:
Disclosed 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%, 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%; Co: < 0.5% but not 0; M: ≤ 0.4% but not 0, M comprising one or more elements from among Ti, Ni, V, Nb, Ta, Cr, Mo, W, Mn, Zr, Hf, and Ag; Cu: ≤ 0.15% but not 0; B: 0.9-1.1%; Fe: 60-70%; the percentages being the weight percentages occupied by each component in the raw material composition. The magnet material of the present invention features the advantages of high remanence, high coercivity, and excellent high-temperature performance.
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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:
JP2022547172A
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; C22C28/00; C22C33/02; C22C38/00; H01F41/02
Domestic Patent References:
| JP2018093202A | ||||
| JP2018174312A | ||||
| JP2007305878A | ||||
| JP2020161811A |
Foreign References:
| CN103745823A | ||||
| WO2014034650A1 | ||||
| WO2013108830A1 | ||||
| WO2018143230A1 |
Attorney, Agent or Firm:
Naoya Ogyo