Title:
MANUFACTURING METHOD OF SINTERED MAGNET
Document Type and Number:
WIPO Patent Application WO/2021/071236
Kind Code:
A1
Abstract:
A manufacturing method of a sintered magnet according to an embodiment of the present invention comprises the steps of: preparing an R-Fe-B-based magnetic powder; sintering the F-Re-B-based magnetic powder to manufacture a sintered magnet; preparing an eutectic alloy containing Pr, Al, Cu, and Ga; and subjecting the sintered magnet to infiltration with the eutectic alloy, wherein R is Nd, Pr, Dy, Ce, or Tb and the infiltration step includes the steps of coating the sintered magnet with the eutectic alloy and thermally treating the eutectic alloy-coated sintered magnet.
Inventors:
KIM TAE HOON (KR)
KWON SOON JAE (KR)
UH HYOUNSOO (KR)
CHOI IKJIN (KR)
CHOE JINHYEOK (KR)
KIM INGYU (KR)
SHIN EUNJEONG (KR)
SUNG NAKHEON (KR)
KWON SOON JAE (KR)
UH HYOUNSOO (KR)
CHOI IKJIN (KR)
CHOE JINHYEOK (KR)
KIM INGYU (KR)
SHIN EUNJEONG (KR)
SUNG NAKHEON (KR)
Application Number:
PCT/KR2020/013643
Publication Date:
April 15, 2021
Filing Date:
October 07, 2020
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01F41/02; B22F3/10; B22F3/24; C22C1/05; H01F1/053; H01F1/153
Domestic Patent References:
WO2019007499A1 | 2019-01-10 |
Foreign References:
KR20150033423A | 2015-04-01 | |||
JP2015082626A | 2015-04-27 | |||
CN106887321A | 2017-06-23 | |||
JPH08316014A | 1996-11-29 |
Other References:
See also references of EP 4006931A4
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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