Title:
永久磁石及び永久磁石の製造方法
Document Type and Number:
Japanese Patent JP5205277
Kind Code:
B2
Abstract:
By causing at least one of Dy and Tb to be adhered to the surface of an iron-boron-rare earth based sintered magnet of a predetermined shape, and is then to be diffused into grain boundary phase, a permanent magnet can be manufactured at high workability and low cost. An iron-boron-rare earth based sintered magnet is disposed in a processing chamber and is heated to a predetermined temperature. Also, an evaporating material made up of a fluoride containing at least one of Dy and Tb disposed in the same or another processing chamber is evaporated, and the evaporated evaporating material is caused to be adhered to the surface of the sintered magnet. The Dy and/or Tb metal atoms of the adhered evaporating material are diffused into the grain particle phase of the sintered magnet before a thin film made of the evaporated material is formed on the surface of the sintered magnet.
Inventors:
Hiroshi Nagata
Hisazo Nakamura
Kato Takeshi
Atsushi Nakatsuka
Ichiro Mukai
Masami Ito
Yoshizumi Ryo
Araigaki Yoshinori
Hisazo Nakamura
Kato Takeshi
Atsushi Nakatsuka
Ichiro Mukai
Masami Ito
Yoshizumi Ryo
Araigaki Yoshinori
Application Number:
JP2008550164A
Publication Date:
June 05, 2013
Filing Date:
December 19, 2007
Export Citation:
Assignee:
ULVAC, Inc.
International Classes:
H01F41/02; B22F3/24; C21D6/00; C23C10/28; C23C12/02; H01F1/057; H01F1/08
Domestic Patent References:
| JP2006303433A | 2006-11-02 | |||
| JP2005175138A | 2005-06-30 |
Foreign References:
| WO2006100968A1 | 2006-09-28 | |||
| WO2007102391A1 | 2007-09-13 |
Attorney, Agent or Firm:
Seiryu Corporation