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1. (WO2018052107) MAGNETIC CORE AND COIL COMPONENT

Pub. No.:    WO/2018/052107    International Application No.:    PCT/JP2017/033420
Publication Date: Fri Mar 23 00:59:59 CET 2018 International Filing Date: Sat Sep 16 01:59:59 CEST 2017
IPC: H01F 1/147
B22F 1/00
B22F 1/02
C22C 38/00
H01F 1/24
H01F 1/33
H01F 27/255
H01F 37/00
B22F 3/00
Applicants: HITACHI METALS, LTD.
日立金属株式会社
Inventors: MIHARA,Toshio
三原 敏男
KATOH,Tetsuroh
加藤 哲朗
NISHIMURA,Kazunori
西村 和則
NOGUCHI,Shin
野口 伸
Title: MAGNETIC CORE AND COIL COMPONENT
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°.