Title:
METHOD FOR MANUFACTURING MAGNET POWDER AND MAGNET POWDER
Document Type and Number:
WIPO Patent Application WO/2020/040480
Kind Code:
A1
Abstract:
A method for manufacturing a magnet powder according to an embodiment of the present invention comprises the steps of: preparing an iron powder through a reduction reaction of iron oxide; heating a green compact molded by pressing a mixture containing the iron powder, neodymium oxide, boron, and calcium at a pressure of 22 MPa or higher to produce a magnetic powder; and coating the surface of the magnetic powder with an organic fluoride.
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Inventors:
CHOI IK JIN (KR)
KWON SOON JAE (KR)
KIM IN GYU (KR)
UH HYOUNSOO (KR)
KWON SOON JAE (KR)
KIM IN GYU (KR)
UH HYOUNSOO (KR)
Application Number:
PCT/KR2019/010377
Publication Date:
February 27, 2020
Filing Date:
August 14, 2019
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
B22F9/20; B22F1/102; B22F1/14; B22F1/16; H01F1/057
Foreign References:
| JPH04247813A | 1992-09-03 | |||
| KR20180051224A | 2018-05-16 | |||
| JPH0372011A | 1991-03-27 | |||
| KR20150033423A | 2015-04-01 | |||
| KR20020019692A | 2002-03-13 |
Other References:
See also references of EP 3677365A4
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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