Title:
RH DIFFUSION SOURCE AND MANUFACTURING METHOD THEREFOR AND PRODUCTION METHOD OF R-T-B-BASED SINTERED MAGNET
Document Type and Number:
Japanese Patent JP2014123653
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an RH diffusion source for use in RH supply diffusion treatment which can reduce the density and make the thickness uniform and thin, and to provide a manufacturing method therefor, and a production method of an R-T-B-based sintered magnet in which RH supply diffusion treatment is carried out by using the RH diffusion source.SOLUTION: An RH diffusion source is used for a method for diffusing a heavy rare earth element RH into an R-T-B-based sintered magnet material (R is at least one kind of rare earth element and always containing Nd, T is at least one kind of transition metal element and always containing Fe), composed of Dy, and has a density of 5-7 g/cm.
Inventors:
MORIMOTO HIDEYUKI
SETO TORU
SETO TORU
Application Number:
JP2012279354A
Publication Date:
July 03, 2014
Filing Date:
December 21, 2012
Export Citation:
Assignee:
HITACHI METALS LTD
International Classes:
H01F41/02; B22F3/00; B22F3/24; C22C33/02; H01F1/057; H01F1/08; C22C38/00
Domestic Patent References:
| JP2007329331A | 2007-12-20 | |||
| JP2008025026A | 2008-02-07 | |||
| JP2005097724A | 2005-04-14 | |||
| JP2011035001A | 2011-02-17 |