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US 11,239,013 B2Granted
Composite magnetic powder, powder magnetic core using the same, and manufacturing method for composite magnetic powder
AssigneeTDK Corporation
InventorsMasataka Kitagami, Kenichi Kawabata
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Abstract
Disclosed herein is a composite magnetic powder that includes an iron-containing magnetic powder, and an insulating layer comprising a silicon oxide formed on a surface of the iron-containing magnetic powder. An O/Si ratio of the silicon oxide constituting the insulating layer is 2.1 or more and 2.2 or less.
Claims11
A composite magnetic powder comprising:
- an iron-containing magnetic powder;
- and
- an insulating layer comprising a silicon oxide formed on a surface of the iron-containing magnetic powder,
- wherein an O/Si ratio of the silicon oxide constituting the insulating layer is 2.1 or more and 2.2 or less.
1 more element
A powder magnetic core including a composite magnetic powder, the composite magnetic powder comprising:
- an iron-containing magnetic powder;
- and
- an insulating layer comprising a silicon oxide formed on a surface of the iron-containing magnetic powder,
- wherein an O/Si ratio of the silicon oxide constituting the insulating layer is 2.1 or more and 2.2 or less.
1 more element
Dependencies are inferred from the claim text.