Soft magnetic material, powder magnetic core, method for manufacturing soft magnetic material, and method for manufacturing powder magnetic core
AssigneeSumitomo Electric Industries, Ltd.
InventorsToru Maeda, Kazuyuki Maeda, Yasushi Mochida, Koji Mimura
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Abstract
A soft magnetic material includes a plurality of composite magnetic particles (40) each including a metal magnetic particle (10) and an insulation coating (20) covering the surface of the metal magnetic particle (10), wherein the insulation coating (20) contains Si (silicon), and 80% or more of Si contained in the insulation coating constitutes a silsesquioxane skeleton. Therefore, it is possible to effectively decrease a hysteresis loss while suppressing an increase in eddy-current loss.
Claims6
A soft magnetic material comprising a plurality of composite magnetic particles each including a pure iron particle and an insulation coating covering the surface of the pure iron particle, wherein the insulation coating contains Si, and 80% or more and 90% or less of Si contained in the insulation coating constitutes a silsesquioxane skeleton and the rest of Si contained in the insulation coating constitutes a silicone skeleton.
Dependencies are inferred from the claim text.