Title:
NEODYMIUM MAGNET AND METHOD FOR PRODUCING NEODYMIUM MAGNET
Document Type and Number:
WIPO Patent Application WO/2022/181811
Kind Code:
A1
Abstract:
A neodymium magnet according to the present invention has a material structure which includes a main phase that has a composition represented by a compositional formula Nd-Fe-B and a grain boundary phase that has a Nd concentration higher than that of the main phase, wherein the grain boundary phase contains at least an alloy of Nd, Fe, and an additive element M1, and the additive element M1 is at least one element selected from the group consisting of Si, Ge, Ga, and Sn.
Inventors:
YOSHIDA SHOHEI (JP)
FUKUZAKI TOMOKAZU (JP)
TAMURA RYUJI (JP)
ENOMOTO SATORU (JP)
SUGIYAMA MASATAKA (JP)
FUKUZAKI TOMOKAZU (JP)
TAMURA RYUJI (JP)
ENOMOTO SATORU (JP)
SUGIYAMA MASATAKA (JP)
Application Number:
PCT/JP2022/008085
Publication Date:
September 01, 2022
Filing Date:
February 25, 2022
Export Citation:
Assignee:
NIDEC CORP (JP)
UNIV TOKYO SCIENCE FOUND (JP)
UNIV TOKYO SCIENCE FOUND (JP)
International Classes:
B22F3/00; H01F1/057; B22F3/24; C21D6/00; C21D9/00; C22C28/00; C22C38/00; H01F41/02; H02K15/03
Domestic Patent References:
| WO2018143229A1 | 2018-08-09 | |||
| WO2017018291A1 | 2017-02-02 |
Foreign References:
| EP3745430A1 | 2020-12-02 | |||
| JP2021034583A | 2021-03-01 |
Attorney, Agent or Firm:
OIKAWA Shu et al. (JP)
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