Title:
希土類焼結磁石、希土類焼結磁石の製造方法、回転子および回転機
Document Type and Number:
Japanese Patent JP7361947
Kind Code:
B2
Abstract:
A rare earth sintered magnet has a main phase and a grain boundary phase, the main phase has an R2Fe14B crystal structure, rare earth elements R include at least Nd and Sm, and the content of Sm is higher in the main phase than in the grain boundary phase. The rare earth elements R may include La. In this manner, the higher content of Sm in the main phase than in the grain boundary phase suppresses the heat generation of the rare earth sintered magnet due to eddy current loss.
Inventors:
岩▲崎▼ 亮人
Yoshikazu Nakano
Yasutaka Nakamura
Shina Yoshioka
Yoshikazu Nakano
Yasutaka Nakamura
Shina Yoshioka
Application Number:
JP2022563286A
Publication Date:
October 16, 2023
Filing Date:
November 17, 2020
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H01F1/057; H01F41/02; H02K1/276; H02K15/03
Domestic Patent References:
| JP6692506B1 | ||||
| JP201074084A | ||||
| JP2018160669A | ||||
| JP7214043B2 | ||||
| JP7254912B2 |
Foreign References:
| WO2019111328A1 |
Attorney, Agent or Firm:
Jun Takamura
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