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Title:
MAGNETIC CORE AND COIL COMPONENT USING SAME
Document Type and Number:
WIPO Patent Application WO/2015/108059
Kind Code:
A1
Abstract:
Provided is a magnetic core having a structure in which Fe-based soft magnetic alloy particles (20) are connected via a grain boundary, wherein the Fe-based soft magnetic alloy particles (20) contain Al, Cr, and Si; an oxide layer (30) containing at least Fe, Al, Cr, and Si is formed at the grain boundary where the adjacent Fe-based soft magnetic alloy particles (20) are connected; the oxide layer (30) has a higher Al content by mass ratio than the Fe-based soft magnetic powder particles (20), and has a first region (30a) in which in terms of the total amount of Fe, Cr, Al, and Si, the percentage of Al is higher than each of the percentages of Fe, Cr, or Si, and a second region (30b) in which in terms of the total amount of Fe, Cr, Al, and Si, the percentage of Fe is higher than each of the percentages of Al, Cr, or Si; and the first region (30a) is on the Fe-based soft magnetic alloy particle (20) side.

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Inventors:
NOGUCHI SHIN (JP)
NISHIMURA KAZUNORI (JP)
MIHARA TOSHIO (JP)
Application Number:
PCT/JP2015/050758
Publication Date:
July 23, 2015
Filing Date:
January 14, 2015
Export Citation:
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Assignee:
HITACHI METALS LTD (JP)
International Classes:
H01F1/22; B22F1/08; B22F1/102; B22F1/16; B22F3/14; C22C33/02; C22C38/00; H01F1/14; H01F27/255; B22F1/052
Domestic Patent References:
WO2014112483A12014-07-24
Foreign References:
JP2012094804A2012-05-17
JP2010138438A2010-06-24
JP2009206483A2009-09-10
JP2009164402A2009-07-23
JPS57114637A1982-07-16
JP2001011563A2001-01-16
JP2011249774A2011-12-08
JP2005220438A2005-08-18
Other References:
See also references of EP 3096333A4
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
Patent business corporation ユニアス international patent firm (JP)
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