Soft magnetic powder, magnetic and coil device
AssigneeTDK Corporation
InventorsShota OTSUKA, Masashi ITO
Life of this patent
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Abstract
A soft magnetic powder and a magnetic body each include a large-diameter metal powder, a small-diameter metal powder, and a ferrite powder. The large-diameter metal powder includes large-diameter powder particles having a particle size of 1.0 μm or more. The small-diameter metal powder includes small-diameter powder particles having a particle size of less than 1.0 μm. The ferrite powder includes ferrite powder particles having a particle size of 1.0 μm or more. The ferrite powder includes a Ni-based ferrite powder. A soft magnetic alloy powder having a composition represented by the composition formula (Fe1-pX1p)100−(a+b+c+d+e)BaPbSicCdX2e in atomic ratio.
Claims14
A soft magnetic powder comprising:
- a large-diameter metal powder;
- a small-diameter metal powder;
- and
- a ferrite powder,
- wherein the large-diameter metal powder includes large-diameter powder particles having a particle size of 1.0 μm or more,
- the small-diameter metal powder includes small-diameter powder particles having a particle size of less than 1.0 μm,
- the ferrite powder includes ferrite powder particles having a particle size of 1.0 μm or more, and
- the ferrite powder comprises a Ni-based ferrite powder.
A magnetic body comprising:
- a large-diameter metal powder;
- a small-diameter metal powder;
- and
- a ferrite powder,
- wherein the large-diameter metal powder includes large-diameter powder particles having a particle size of 1.0 μm or more,
- the small-diameter metal powder includes small-diameter powder particles having a particle size of less than 1.0 μm,
- the ferrite powder includes ferrite powder particles having a particle size of 1.0 μm or more, and
- the ferrite powder includes a Ni-based ferrite powder.
Dependencies are inferred from the claim text.