Title:
COMPOSITE SOFT MAGNETIC MATERIAL AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2013/100143
Kind Code:
A1
Abstract:
Provided are a composite soft magnetic material, having favorable DC bias characteristics and high specific resistance, and a production method therefor.
An inorganic insulative powder (3) and a coated powder obtained by coating a soft magnetic powder (1) that is coated with an insulative film (4) with a silicone resin (2) are uniformly mixed, and the resultant mixture is molded and fired. By uniformly mixing the inorganic insulative powder (3) and the coated powder obtained by coating the soft magnetic powder that is coated with the insulative film (4) with the silicone resin (2), rupture of the insulative film due to the inorganic insulative material when molding pressed powder is prevented. By uniformly dispersing the inorganic insulative material while high specific resistance is maintained, the gap between molded soft magnetic powder particles is uniformly maintained. As a result, a composite soft magnetic material is provided having high specific resistance and favorable DC bias characteristics.
Inventors:
KOBAYASHI NAOKI (JP)
MIYAHARA MASAHISA (JP)
MORI KATSUHIKO (JP)
IKEDA HIROAKI (JP)
MIYAHARA MASAHISA (JP)
MORI KATSUHIKO (JP)
IKEDA HIROAKI (JP)
Application Number:
PCT/JP2012/084158
Publication Date:
July 04, 2013
Filing Date:
December 28, 2012
Export Citation:
Assignee:
DIAMET CORP (JP)
KOBAYASHI NAOKI (JP)
MIYAHARA MASAHISA (JP)
MORI KATSUHIKO (JP)
IKEDA HIROAKI (JP)
KOBAYASHI NAOKI (JP)
MIYAHARA MASAHISA (JP)
MORI KATSUHIKO (JP)
IKEDA HIROAKI (JP)
International Classes:
H01F1/20; B22F1/05; B22F1/102; B22F1/16; B22F3/00; B22F3/02; B22F3/24; H01F1/26; H01F1/33; H01F41/02
Domestic Patent References:
WO2006006545A1 | 2006-01-19 |
Foreign References:
JP2006005173A | 2006-01-05 | |||
JP2003303711A | 2003-10-24 | |||
JP2010245460A | 2010-10-28 |
Attorney, Agent or Firm:
USHIKI, Mamoru (JP)
牛木 護 (JP)
牛木 護 (JP)
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