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Title:
MAGNETIC CORE AND COIL COMPONENT
Document Type and Number:
WIPO Patent Application WO/2018/052107
Kind Code:
A1
Abstract:
Provided are: a magnetic core that exhibits a high initial permeability and a small magnetic core loss and is further able to reduce magnetic core loss at high frequencies; and a coil component using same. This magnetic core is formed by binding, via an oxide layer containing an Fe oxide, multiple particles of an Fe-based alloy containing aluminum, wherein the magnetic core exhibits, in an X-ray diffraction spectrum of the magnetic core as measured using Cu-Kα characteristic X-rays, a peak intensity ratio (P1/P2) of not higher than 0.010 (but not including zero) between a peak intensity P1 of a diffraction peak that is derived from an Fe oxide having a corundum structure and that appears in the vicinity of 2θ=33.2° and a peak intensity P2 of a diffraction peak that is derived from an Fe-based alloy having a bcc structure and that appears in the vicinity of 2θ=44.7°, and the superlattice peak intensity of Fe3Al ordered structure is not higher than noise level within the range of 2θ=20° to 40°.

Inventors:
MIHARA,Toshio (2-70, Konan 1-chome, Minato-k, Tokyo 24, 〒1088224, JP)
KATOH,Tetsuroh (2-70, Konan 1-chome, Minato-k, Tokyo 24, 〒1088224, JP)
NISHIMURA,Kazunori (2-70, Konan 1-chome, Minato-k, Tokyo 24, 〒1088224, JP)
NOGUCHI,Shin (2-70, Konan 1-chome, Minato-k, Tokyo 24, 〒1088224, JP)
Application Number:
JP2017/033420
Publication Date:
March 22, 2018
Filing Date:
September 15, 2017
Export Citation:
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Assignee:
HITACHI METALS, LTD. (2-70, Konan 1-chome Minato-k, Tokyo 24, 〒1088224, JP)
International Classes:
H01F1/147; B22F1/00; B22F1/02; C22C38/00; H01F1/24; H01F1/33; H01F27/255; H01F37/00; B22F3/00
Domestic Patent References:
WO2015108059A12015-07-23
WO2006085609A12006-08-17
Foreign References:
JP2016027643A2016-02-18
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (First Shin-Osaka MT Bldg. 2nd Floor, 5-13-9 Nishinakajima Yodogawa-ku, Osaka-sh, Osaka 11, 〒5320011, JP)
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