Insulator-coated soft magnetic powder, powder magnetic core, magnetic element, electronic device, and vehicle
AssigneeSeiko Epson Corporation
InventorsToshikuni SATO, Atsushi NAKAMURA
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Abstract
An insulator-coated soft magnetic powder includes a plurality of particles each including a core which contains a soft magnetic material, and an insulating layer which is provided on the surface of the core and contains a glass material including Bi2O3 as a main component. The content of an alkali metal in the insulating layer is 5 mol % or less. The glass material further contains at least one of ZnO and B2O3. The content of Bi2O3 in the glass material is 40 mol % or more and 80 mol % or less.
Claims20
An insulator-coated soft magnetic powder, comprising a plurality of particles, each particle including:
- a core which contains a soft magnetic material;
- and
- an insulating layer which is provided on an entire outer surface of the core, the insulating layer containing a glass material including Bi2O3 as a main component,
- wherein the insulating layer contains 5 mol % or less of an alkali metal.
An insulator-coated soft magnetic powder, comprising a plurality of particles, each particle including:
- a core which contains a soft magnetic material;
- and
- an insulating layer which is provided on an entire outer surface of the core, the insulating layer containing a glass material including Bi2O3 as a main component,
- wherein the insulating layer contains 5 mol % or less of an alkali metal.
Dependencies are inferred from the claim text.