Title:
METAL MAGNETIC MATERIAL AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/159981
Kind Code:
A1
Abstract:
Provided are: a metal magnetic material having high saturation magnetic flux density, wherein insulation can be reliably provided; and an electronic device which uses this metal magnetic material and has low loss and good direct current superposition characteristics.
This metal magnetic material that constitutes an element is obtained by adding, to a metal magnetic alloy powder composed of iron and silicon or to a metal magnetic alloy powder containing iron, silicon and chromium, an element that is more likely to be oxidized than the elements contained in the metal magnetic alloy powder in oxidation-reduction equilibrium. A coil pattern is formed inside this element (11) with use of conductive patterns (12A-12C) for coils. This metal magnetic material is suppressed in deterioration of the magnetic characteristics even if subjected to a heat treatment at high temperatures, so that a heat treatment for reducing the resistance of the coil pattern can be performed at an adequate temperature.
Inventors:
YAMAMOTO MAKOTO (JP)
Application Number:
PCT/JP2015/061890
Publication Date:
October 22, 2015
Filing Date:
April 17, 2015
Export Citation:
Assignee:
TOKO INC (JP)
International Classes:
H01F1/24; B22F1/00; B22F1/12; B22F1/142; B22F1/16; H01F1/33; H01F27/255
Foreign References:
| JP2002256304A | 2002-09-11 | |||
| JP2003037018A | 2003-02-07 | |||
| JP2009206483A | 2009-09-10 | |||
| JP4906972B1 | 2012-03-28 | |||
| JP2010062424A | 2010-03-18 |
Attorney, Agent or Firm:
TSUJII Koichi et al. (JP)
辻居 Koichi (JP)
辻居 Koichi (JP)
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