Title:
RARE-EARTH PERMANENT MAGNET AND METHOD FOR MANUFACTURING RARE-EARTH PERMANENT MAGNET
Document Type and Number:
WIPO Patent Application WO/2018/079755
Kind Code:
A1
Abstract:
A rare-earth permanent magnet is provided with a main phase which contains: one or more rare-earth elements R including Nd; one or more elements L selected from the group consisting of Co, Be, Li, Al, and Si; B; and Fe. A crystal forming the main phase belongs to P42/mnm. Some B atoms occupying the 4f site in the crystal are substituted with the atoms of element L. Distributions of the Nd atoms and the atoms of element L appear respectively with a plurality of periods along the C-axis direction of the crystal. The rare-earth permanent magnet is provided with an area in which the period of the atoms of element L and the period of the atoms of Nd coincide.
Inventors:
YONEYAMA NAUSUKI (JP)
EGUCHI HARUKI (JP)
BANNO HIDEKAZU (JP)
NAKANOWATARI ISAO (JP)
NAGAO KEISUKE (JP)
EGUCHI HARUKI (JP)
BANNO HIDEKAZU (JP)
NAKANOWATARI ISAO (JP)
NAGAO KEISUKE (JP)
Application Number:
PCT/JP2017/039015
Publication Date:
May 03, 2018
Filing Date:
October 27, 2017
Export Citation:
Assignee:
IHI CORP (JP)
International Classes:
H01F1/057; B22F1/00; B22F3/00; B22F3/10; B22F3/24; C21D6/00; H01F41/02; C22C38/00
Foreign References:
JP2005197533A | 2005-07-21 | |||
JPH07201619A | 1995-08-04 | |||
JPH1022154A | 1998-01-23 | |||
JP2013070062A | 2013-04-18 |
Other References:
See also references of EP 3534381A4
Attorney, Agent or Firm:
OHGA, Shinji et al. (JP)
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