Title:
PERMANENT MAGNET AND MANUFACTURING METHOD THEREOF
Document Type and Number:
Japanese Patent JP2010238761
Kind Code:
A
Abstract:
To obtain a permanent magnet in which heat resistance and a magnetic characteristic can be effectively improved without increasing cost.
An insulating film composed of at least one of fullerene or chemically modified fullerene is formed on a boundary surface of magnetic powder containing rare earth, molding or density growth is performed on the magnetic powder in a magnetic field to obtain a primary compact, sintering or plastic working is performed on the primary compact to obtain a secondary compact, and then heat treatment is performed on the secondary compact.
Inventors:
OKAMURA MITSUHIRO
Application Number:
JP2009082634A
Publication Date:
October 21, 2010
Filing Date:
March 30, 2009
Export Citation:
Assignee:
HONDA MOTOR CO LTD
International Classes:
H01F1/08; B22F1/00; B22F1/02; B22F3/00; B22F3/02; B22F3/14; B22F3/24; H01F1/053; H01F41/02
Attorney, Agent or Firm:
Suenari Mikio