RARE EARTH PERMANENT MAGNET AND RARE EARTH PERMANENT MAGNET PRODUCTION METHOD

Title:

RARE EARTH PERMANENT MAGNET AND RARE EARTH PERMANENT MAGNET PRODUCTION METHOD

Document Type and Number:

WIPO Patent Application WO/2013/137132

Kind Code:

A1

Abstract:

Provided are: a rare earth permanent magnet in which the magnetic properties of the permanent magnet are improved by appropriately conducting magnetic field orientation; and a rare earth permanent magnet production method. Magnet material is pulverized into magnet powder, and a compound (12) is produced by mixing the pulverized magnet powder with a binder. A green sheet (14) formed in a sheet form on a supporting substrate (13) is produced by hot melt molding the compound (12) that was produced. Then, the green sheet (14) that was formed is softened by heating, and magnetic field orientation is conducted by applying a magnetic field to the heated green sheet (14). Permanent magnets (1) are then produced by sintering the green sheet (14) after magnetic field orientation.

Inventors:

OZAKI TAKASHI (JP)
KUME KATSUYA (JP)
OKUNO TOSHIAKI (JP)
OZEKI IZUMI (JP)
OMURE TOMOHIRO (JP)
TAIHAKU KEISUKE (JP)
YAMAMOTO TAKASHI (JP)

Application Number:

PCT/JP2013/056431

Publication Date:

September 19, 2013

Filing Date:

March 08, 2013

Export Citation:

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Assignee:

NITTO DENKO CORP (JP)

International Classes:

H01F41/02; B22F3/00; B22F3/02; B22F3/10; C22C33/02; C22C38/00; H01F1/057; H01F1/08

Domestic Patent References:

WO2009116539A1

2009-09-24

Foreign References:

JP2003026928A	2003-01-29
JP2001006958A	2001-01-12
JP2009087466A	2009-04-23
JPH09283358A	1997-10-31
JP2010198934A	2010-09-09
JP2013030738A	2013-02-07
JPH02266503A	1990-10-31

Other References: