To obtain permanent magnet particles of nano-order, whose magnetic characteristics are improved compared with a permanent magnet using conventional permanent magnet particles of micron-order, and to provide a producing method for a permanent magnet to be formed by granulating the permanent magnet particles of nano-order.
A carbon mold is manufactured by adding water, hydrazine, NH3, and TEOS to a C-15/cyclohexane solution to form spherical silica, firing the spherical silica under an Ar atmosphere, and etching the spherical silica with NaOHaq. The manufactured carbon mold is vacuum-impregnated with an aqueous solution of metallic salt, and an aqueous solution of Ca(NO3) is added to the carbon mold. By this reduction diffusion treatment, permanent magnet particles are manufactured. Further, the permanent magnet particles are treated in such a procedure as to be granulated, mixed with resin, and molded, whereby the permanent magnet is produced.
YASUMURA TAKAAKI
SASAKI IWAO
HAMAO SATOKAZU
YASKAWA ELECTRIC CORP
| JP2003253249A | 2003-09-10 | |||
| JPH0774012A | 1995-03-17 | |||
| JP2002060806A | 2002-02-28 | |||
| JP2004161590A | 2004-06-10 | |||
| JP2003253249A | 2003-09-10 | |||
| JPH0774012A | 1995-03-17 | |||
| JP2002060806A | 2002-02-28 | |||
| JP2004161590A | 2004-06-10 |
Hironori Honda
Toshimitsu Ichikawa
Takeshi Takamatsu
Yuriko Hamada
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