Title:
METHOD FOR PRODUCING FePd/Fe NANOCOMPOSITE MAGNET AND NANOCOMPOSITE MAGNET PRODUCED BY THE SAME
Document Type and Number:
Japanese Patent JP2010263121
Kind Code:
A
Abstract:
To provide a method for producing an FePd/Fe nanocomposite magnet that changes composition so that ratios of hard and soft magnetic phases may be changed in various ways, and the FePd/Fe nanocomposite magnet produced by the method.
There is provided a method for producing an FePd/Fe nanocomposite magnet that uses FePd as a core and Fe as a shell, comprising: a process 1 to produce Pd/Fe2O3nanocomposite particles using a Pd nano particle as a core and an Fe2O3particle as a shell, a process 2 to produce Pd-impregnated Fe2O3/Pd nanocomposite particles by adding Pd to the Fe2O3/Pd nanocomposite particles while protecting the Pd nanoparticle with a surfactant, and a process 3 of hydrogen reduction treatment to heat the Pd-impregnated Fe2O3/Pd nanocomposite particles in hydrogen atmosphere.
COPYRIGHT: (C)2011,JPO&INPIT
Inventors:
SAKUMA NORITSUGU
KATO AKIRA
SHOJI TETSUYA
TERANISHI TOSHIJI
Application Number:
JP2009113761A
Publication Date:
November 18, 2010
Filing Date:
May 08, 2009
Assignee:
TOYOTA MOTOR CORP
UNIV TSUKUBA
International Classes:
H01F1/09; B22F1/02; B22F9/22; C22C38/00; H01F41/02
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Nobuo Sekine
Yasuo Dogaki
