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US 11,699,542 B2Granted
Dust core
AssigneeTDK Corporation
InventorTakeshi Takahashi
Life of this patent
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Abstract
The dust core comprises a plurality of soft magnetic iron-based particles, a coating layer disposed on each of the surfaces of the soft magnetic iron-based particles, an interstitial layer disposed between the coating layers, and a nanopowder disposed between the soft magnetic iron-based particles. The coating layer is a layer of a compound comprising Fe, Si, O, B and N; and the nanopowder is a powder of a compound comprising O, N and at least one element selected from the group consisting of Fe, Si, Zr, Co, Al, Mg, Mn and Ni.
Claims6
A dust core comprising:
- a plurality of soft magnetic iron-based particles;
- a coating layer disposed on each of the surfaces of the soft magnetic iron-based particles;
- an interstitial layer disposed between the coating layers;
- and
- a nanopowder disposed between the soft magnetic iron-based particles,
- wherein the coating layer is a layer of a compound comprising Fe, Si, O, B and N;
- and
- the nanopowder is a powder of a compound comprising O, N and at least one element selected from the group consisting of Fe, Si, Zr, Co, Al, Mg, Mn and Ni.
5 more elements
Dependencies are inferred from the claim text.