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US 11,440,093 B2Granted
Composite particle and dust core
AssigneeTDK Corporation
InventorTakeshi Takahashi
Life of this patent
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Abstract
A composite particle of the present invention comprises a soft magnetic iron-based particle, a coating layer disposed on a surface of the soft magnetic iron-based particle, and a spherical nanopowder with at least a part thereof disposed inside of the coating layer. 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.
Claims9
A composite particle comprising:
- a soft magnetic iron-based particle;
- a coating layer disposed on a surface of the soft magnetic iron-based particle;
- and
- a spherical nanopowder with at least a part thereof disposed inside of the coating layer,
- 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.
3 more elements
Dependencies are inferred from the claim text.