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1. (WO2015137303) MAGNETIC CORE, COIL COMPONENT AND MAGNETIC CORE MANUFACTURING METHOD

Pub. No.:    WO/2015/137303    International Application No.:    PCT/JP2015/056934
Publication Date: Sep 17, 2015 International Filing Date: Mar 10, 2015
IPC: H01F 1/24
B22F 1/00
B22F 3/00
B22F 3/24
C22C 38/00
H01F 27/255
H01F 41/02
Applicants: HITACHI METALS, LTD.
日立金属株式会社
Inventors: NISHIMURA, Kazunori
西村 和則
MIHARA, Toshio
三原 敏男
NOGUCHI,Shin
野口 伸
Title: MAGNETIC CORE, COIL COMPONENT AND MAGNETIC CORE MANUFACTURING METHOD
Abstract:
This magnetic core has a structure in which alloy phases (20), which include Fe, Al, Cr and Si, are dispersed. Adjacent alloy phases (20) are connected by grain barrier phases (30), and in the grain barrier phases (30), oxide regions are generated which include Fe, Al, Cr and Si and which include a higher mass ratio of Al than the alloy phases (20). Defining the total of Fe, Al, Cr and Si as 100 mass%, this magnetic core contains 3-10 mass% Al, 3-10 mass% Cr, and more than 1 mass% and less than or equal to 4 mass% Si, with the remainder being Fe and unavoidable impurities.