| 摘要 |
<P>PROBLEM TO BE SOLVED: To inexpensively provide a powder-compressed molded body high in magnetic flux density and small in iron loss. Ž<P>SOLUTION: This dust core is formed by compressing and molding particles of a powder of iron or an alloy containing iron as a main constituent, the each particle having an insulation layer containing fluoride formed on a surface thereof. In this dust core, fluoride grains and a release material made of iron oxide are mixed in the insulation layer, the fluoride is magnesium fluoride, and the iron oxide is a magnetite, ferrite or a mixture of them. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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