| 摘要 |
PROBLEM TO BE SOLVED: To provide a soft-magnetic powder magnetic core having excellent direct current superposition characteristics and low loss, and also to provide its manufacturing method. SOLUTION: An amorphous thin strip consisting of: a composition expressed by a general formula of (Fe<SB>1-a</SB>M<SB>a</SB>)<SB>b</SB>Si<SB>c</SB>B<SB>d</SB>X<SB>e</SB>M'<SB>f</SB>(atomic%) (where X is one or more kinds of elements selected from C, P, S, Ga, Ge and Sn); and inevitable impurities, is subjected to thermal treatment for embrittlement at a temperature of≥180°C and≤350°C and ground. A soft magnetic powder thus obtained and a binding agent are mixed to provide a pressed powder material. This manufacturing method of the powder magnetic core is used. COPYRIGHT: (C)2006,JPO&NCIPI
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