Title:
RARE EARTH MAGNET AND MANUFACTURING METHOD THEREOF
Document Type and Number:
Japanese Patent JP2016115777
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a rare earth magnet which improves a coercive force, and a manufacturing method thereof.SOLUTION: A manufacturing method of a rare earth magnet, comprises: a step C of obtaining a molding body by applying hot processing for giving an anisotropy to a sinter body of an Nd-Fe-Co-B-M composition (where M is Ti, Zr, Cr, Mn, Nb, V, Mo, W, Ta, Si, Al, Ge, Ga, Cu, Ag, or Au; Nd is larger than 12 atom% and is equal to 35 atom% or less; Nd:B (atomic fraction ratio) is in a range of 1.5:1 to 3:1; Co is in the range of 0 to 12 atom%; M is in the range of 0 to 3 atom%; and a remaining part is Fe); and a step D of heat-processing by a temperature that is less than a fusion point of the molding body and is equal to the fusion point of an L-Cu-Ni-Al alloy or more in a state where an L-Cu-Ni-Al alloy 2 (in a formula, the L indicates lanthanoid) of 50 wt.% or more of the molding body 1 is brought into contact with a surface of the molding body 1 to be present.SELECTED DRAWING: Figure 1
Inventors:
YANO MASAO
SAKUMA NORITSUGU
MANABE AKIRA
KATO AKIRA
UMA MAHESWARA RAO SEELAM
LIU LI HUA
AKIYA TAKAHIRO
HOSSEIN SEPEHRI AMIN
OKUBO TADAKATSU
HONO KAZUHIRO
SAKUMA NORITSUGU
MANABE AKIRA
KATO AKIRA
UMA MAHESWARA RAO SEELAM
LIU LI HUA
AKIYA TAKAHIRO
HOSSEIN SEPEHRI AMIN
OKUBO TADAKATSU
HONO KAZUHIRO
Application Number:
JP2014252325A
Publication Date:
June 23, 2016
Filing Date:
December 12, 2014
Export Citation:
Assignee:
TOYOTA MOTOR CORP
NAT INST FOR MATERIALS SCIENCE
NAT INST FOR MATERIALS SCIENCE
International Classes:
H01F41/02; B22F1/00; B22F3/00; B22F3/24; B22F9/08; C22C28/00; C22C33/02; C22C38/00; H01F1/057; H01F1/08
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Nobuo Sekine
Yasuo Dogaki
Takashi Ishida
Tetsuji Koga
Nobuo Sekine
Yasuo Dogaki