Title:
DUST CORE, METHOD FOR PRODUCING SAID DUST CORE, INDUCTOR PROVIDED WITH SAID DUST CORE, AND ELECTRONIC/ELECTRICAL DEVICE ON WHICH SAID INDUCTOR IS MOUNTED
Document Type and Number:
WIPO Patent Application WO/2016/185940
Kind Code:
A1
Abstract:
As a dust core which contains a crystalline magnetic material powder and an amorphous magnetic material powder, and which enables an inductor provided with this dust core to have improved direct current superposition characteristics and reduced iron loss, the present invention provides a dust core which contains a crystalline magnetic material powder and an amorphous magnetic material powder so that the sum of the content of the crystalline magnetic material powder and the content of the amorphous magnetic material powder is 83% by mass or more and the mass ratio of the content of the crystalline magnetic material powder to the above-described sum is 20% by mass or less. The median diameter D50 of the amorphous magnetic material powder is not less than the median diameter D50 of the crystalline magnetic material powder. The ratio of the 10% cumulative diameter D10a of the amorphous magnetic material powder in the volume-based cumulative particle size distribution to the 90% cumulative diameter D90b of the crystalline magnetic material powder in the volume-based cumulative particle size distribution is from 0.3 to 2.6 (inclusive).
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Inventors:
TAKADATE KINSHIRO (JP)
KOSHIBA HISATO (JP)
YAMASHITA SHOKAN (JP)
KOSHIBA HISATO (JP)
YAMASHITA SHOKAN (JP)
Application Number:
PCT/JP2016/063842
Publication Date:
November 24, 2016
Filing Date:
May 10, 2016
Export Citation:
Assignee:
ALPS GREEN DEVICES CO LTD (JP)
International Classes:
H01F1/22; B22F1/06; B22F1/08; B22F1/102; B22F3/00; C22C38/00; C22C45/02; H01F1/153; H01F1/20; H01F17/06
Domestic Patent References:
| WO2009128425A1 | 2009-10-22 | |||
| WO2014054430A1 | 2014-04-10 |
Foreign References:
| JP2001196216A | 2001-07-19 | |||
| JP2010118486A | 2010-05-27 | |||
| JP2006237153A | 2006-09-07 |
Other References:
See also references of EP 3300089A4
Attorney, Agent or Firm:
OKUBO, KATSUYUKI (JP)
大窪 克之 (JP)
大窪 克之 (JP)
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