Title:
DUST CORE, COIL COMPONENT, AND METHOD FOR PRODUCING DUST CORE
Document Type and Number:
WIPO Patent Application WO/2013/108735
Kind Code:
A1
Abstract:
Provided is a construction that is suitable for reducing core loss in a dust core made by using a soft magnetic material powder, and in a coil component using the dust core. This dust core made by using a soft magnetic material powder is characterized in that Cu is dispersed among said soft magnetic material powder. Preferably, the dust core is characterized in that: said soft magnetic material powder is a pulverized powder of a soft magnetic alloy ribbon; and Cu is dispersed among said pulverized powder of said soft magnetic alloy ribbon. Further, preferably, the dust core is characterized in that: said soft magnetic alloy ribbon is an Fe-based alloy ribbon that develops an Fe-based nano-crystalline alloy ribbon or an Fe-based nano-crystalline structure; and said pulverized powder has a nano-crystalline structure.
Inventors:
KATO TETSURO (JP)
NOGUCHI SHIN (JP)
NISHIMURA KAZUNORI (JP)
NOGUCHI SHIN (JP)
NISHIMURA KAZUNORI (JP)
Application Number:
PCT/JP2013/050525
Publication Date:
July 25, 2013
Filing Date:
January 15, 2013
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
H01F1/20; B22F1/08; B22F1/10; B22F1/16; B22F3/00; C22C33/02; C22C45/02; H01F1/153; H01F1/24; H01F1/33; H01F27/255; H01F41/02
Domestic Patent References:
| WO2009139368A1 | 2009-11-19 |
Foreign References:
| JP2004520486A | 2004-07-08 | |||
| JP2009174034A | 2009-08-06 | |||
| JPS63304603A | 1988-12-12 | |||
| JP2007231415A | 2007-09-13 | |||
| JP2009206337A | 2009-09-10 | |||
| JPS6428301A | 1989-01-30 | |||
| JPH0711396A | 1995-01-13 |
Other References:
See also references of EP 2806433A4
Attorney, Agent or Firm:
KOHNO, Hideto et al. (JP)
Hidehito Kono (JP)
Hidehito Kono (JP)
Download PDF:
Claims: