Magnetic sheet and wirelessly charged magnetic member including same
US-9831022-B2 · Nov 28, 2017 · US
Soft magnetic alloy powder, compact, powder magnetic core, and magnetic element
US9245676B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9245676-B2 |
| Application number | US-201213687072-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 28, 2012 |
| Priority date | Dec 16, 2011 |
| Publication date | Jan 26, 2016 |
| Grant date | Jan 26, 2016 |
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Abstract
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Provided are a soft magnetic alloy powder, a compact made from the soft magnetic alloy powder, a powder magnetic core including the compact, and a magnetic element including the powder magnetic core. The soft magnetic alloy powder contains Fe—Ni-based particles containing 38% to 48% by mass Ni, 1.0% to 15% by mass Co, and 1.2% to 10% by mass Si relative to the total mass of Fe, Ni, Co, and Si, the remainder being Fe. The Fe—Ni-based particles have an average size of more than 1 μm to less than 10 μm.
First claim
Opening claim text (preview).
What is claimed is: 1. A soft magnetic alloy powder comprising Fe—Ni-based alloy particles containing 38% to 48% by mass Ni, 1.0% to 15% by mass Co, and 1.2% to 10% by mass Si relative to the total mass of Fe, Ni, Co, and Si, the remainder being Fe, wherein the Fe—Ni-based particles have an average size of more than 1 μm to less than 10 μm, and wherein the Fe—Ni-based alloy particles have a core loss of 1526 kW/m 3 or less at 10 MHz. 2. A powder magnetic core comprising a compact obtained by press-molding a mixture of the Fe—Ni-based alloy particles specified in claim 1 , resin, and a lubricant. 3. A magnetic element comprising the powder magnetic core according to claim 2 . 4. A compact comprising Fe—Ni-based alloy particles containing 38% to 48% by mass Ni, 1.0% to 15% by mass Co, and 1.2% to 10% by mass Si relative to the total mass of Fe, Ni, Co, and Si, the remainder being Fe, wherein the surface of each of the Fe—Ni-based particles is partly or entirely coated with an insulator and the Fe—Ni-based particles have an average size of more than 1 μm to less than 10 μm, and wherein the Fe—Ni-based alloy particles have a core loss of 1526 kW/m 3 or less at 10 MHz. 5. A powder magnetic core comprising a compact obtained by press-molding a mixture of the Fe—Ni-based alloy particles specified in claim 4 , resin, and a lubricant. 6. A magnetic element comprising the powder magnetic core according to claim 5 .
Assignees
Inventors
Classifications
made from powder (powder coatings on sheets H01F3/02; on strips or ribbons H01F3/04; on wires H01F3/06) · CPC title
- H01F1/14733Primary
in the form of particles · CPC title
- H01F7/02Primary
Permanent magnets {[PM]} · CPC title
the particles being insulated · CPC title
by macromolecular organic substances · CPC title
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- What does patent US9245676B2 cover?
- Provided are a soft magnetic alloy powder, a compact made from the soft magnetic alloy powder, a powder magnetic core including the compact, and a magnetic element including the powder magnetic core. The soft magnetic alloy powder contains Fe—Ni-based particles containing 38% to 48% by mass Ni, 1.0% to 15% by mass Co, and 1.2% to 10% by mass Si relative to the total mass of Fe, Ni, Co, and Si, …
- Who is the assignee on this patent?
- Tdk Corp
- What technology area does this patent fall under?
- Primary CPC classification H01F1/14733. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 26 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).