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1. (WO2018062409) MAGNETIC CORE

Pub. No.:    WO/2018/062409    International Application No.:    PCT/JP2017/035292
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Fri Sep 29 01:59:59 CEST 2017
IPC: H01F 27/24
C22C 38/00
H01F 1/153
H01F 3/02
C21D 6/00
Applicants: KABUSHIKI KAISHA TOSHIBA
株式会社 東芝
TOSHIBA MATERIALS CO., LTD.
東芝マテリアル株式会社
Inventors: MAEDA Takahiro
前田 貴大
SAITO Tadao
斉藤 忠雄
HABU Satoru
土生 悟
YAMADA Katsuhiko
山田 勝彦
KUSAKA Takao
日下 隆夫
INOUE Tetsuo
井上 哲夫
Title: MAGNETIC CORE
Abstract:
A magnetic core is provided with a plurality of iron-based soft magnetic alloy plates having a crystal structure and an average crystal grain diameter of 100 nm or less, and an insulation film provided between one and another of the plurality of iron-based soft magnetic alloy plates. The percentage of the magnetic core occupied by the plurality of iron-based soft magnetic alloy plates is 65% or more, and the initial permeability at a frequency of 100 kHz is 25,000 or more.