COMPOSITE SOFT MAGNETIC MATERIAL, METHOD FOR MANUFACTURING COMPOSITE SOFT MAGNETIC MATERIAL, AND ELECTROMAGNETIC CIRCUIT COMPONENT

摘要

PROBLEM TO BE SOLVED: To provide a dust core for obtaining a high saturation magnetic flux density and suppressing iron loss small, a method for manufacturing the same, and an electromagnetic circuit component provided with the dust core.

SOLUTION: The dust core 1 consists of Fe-3Si alloy particle phases 2, and pure iron particle phases 3 interposed in grain boundaries 2a each of which is surrounded by at least three or more Fe-3Si alloy particle phases 2. In the Fe-3Si alloy particle phases 2, a mean particle diameter is set to 100 to 145 μm, and the content of the pure iron particle phases 3 to the entire quantity of the dust core is set to 3 mass% or more and less than 10 mass%.

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