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Title:
PERMANENT MAGNET AND MANUFACTURING METHOD FOR PERMANENT MAGNET
Document Type and Number:
WIPO Patent Application WO/2011/125594
Kind Code:
A1
Abstract:
Disclosed are a permanent magnet and a manufacturing method for the permanent magnet in which the entire magnet can be densely sintered and the loss of magnetic properties can be reduced. An organometallic compound solution, to which an organometallic compound represented by the formula M-(OR)x has been added, is added to a fine powder of a pulverized neodymium magnet, and the organometallic compound is uniformly deposited on the surface of the neodymium magnet grains. Afterwards, the dried magnet powder is calcined by plasma heating, and a permanent magnet (1) is manufactured by sintering the calcined pulvulerent calcined body after the formation thereof. (In the formula, M is Dy or Tb. R is a substituent group comprising a hydrocarbon, and can be a straight chain or a branched chain. x is an arbitrary integer.)

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Inventors:
OZEKI IZUMI (JP)
KUME KATSUYA (JP)
HIRANO KEISUKE (JP)
OMURE TOMOHIRO (JP)
TAIHAKU KEISUKE (JP)
OZAKI TAKASHI (JP)
Application Number:
PCT/JP2011/057575
Publication Date:
October 13, 2011
Filing Date:
March 28, 2011
Export Citation:
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Assignee:
NITTO DENKO CORP (JP)
OZEKI IZUMI (JP)
KUME KATSUYA (JP)
HIRANO KEISUKE (JP)
OMURE TOMOHIRO (JP)
TAIHAKU KEISUKE (JP)
OZAKI TAKASHI (JP)
International Classes:
H01F41/02; B22F1/16; B22F3/00; B22F3/02; C21D1/34; C21D1/38; C22C33/02; C22C38/00; H01F1/053; H01F1/08
Domestic Patent References:
WO2009116532A12009-09-24
Foreign References:
JP2005191187A2005-07-14
JP2001020065A2001-01-23
JP2005039089A2005-02-10
JP2005097697A2005-04-14
JP2005197299A2005-07-21
JP3298219B22002-07-02
Other References:
See also references of EP 2503572A4
Attorney, Agent or Firm:
NEXT INTERNATIONAL (JP)
Patent business corporation NeXT (JP)
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