Soft magnetic powder, magnetic core, method for manufacturing soft magnetic powder, and method for manufacturing magnetic core
US-2018315528-A1 · Nov 1, 2018 · US
Dust core
US2018261385A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018261385-A1 |
| Application number | US-201815915852-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 8, 2018 |
| Priority date | Mar 9, 2017 |
| Publication date | Sep 13, 2018 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
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A dust core includes a metal magnetic material and a resin. Fine particles exist on a surface of the dust core.
First claim
Opening claim text (preview).
1 . A dust core comprising a metal magnetic material and a resin, wherein fine particles exist on a surface of the dust core. 2 . The dust core according to claim 1 , wherein the fine particles on the surface of the dust core have an average particle size of 1.0 to 200 nm. 3 . The dust core according to claim 2 , wherein particle sizes of the fine particles on the surface of the dust core have a standard deviation σ of 30 nm or less. 4 . The dust core according to claim 1 , wherein the fine particles comprise a Si—O based compound. 5 . The dust core according to claim 2 , wherein the fine particles comprise a Si—O based compound. 6 . The dust core according to claim 3 , wherein the fine particles comprise a Si—O based compound. 7 . The dust core according to claim 1 , wherein the fine particles are attached to the metal magnetic material. 8 . The dust core according to claim 2 , wherein the fine particles are attached to the metal magnetic material. 9 . The dust core according to claim 3 , wherein the fine particles are attached to the metal magnetic material. 10 . The dust core according to claim 1 , wherein the metal magnetic material comprises a main component of Fe. 11 . The dust core according to claim 2 , wherein the metal magnetic material comprises a main component of Fe. 12 . The dust core according to claim 3 , wherein the metal magnetic material comprises a main component of Fe. 13 . The dust core according to claim 1 , wherein the metal magnetic material comprises a main component of Fe and Si. 14 . The dust core according to claim 2 , wherein the metal magnetic material comprises a main component of Fe and Si. 15 . The dust core according to claim 3 , wherein the metal magnetic material comprises a main component of Fe and Si. 16 . The dust core according to claim 1 , wherein an oxide film comprising a Si—O based oxide exists on a surface of the metal magnetic material. 17 . The dust core according to claim 2 , wherein an oxide film comprising a Si—O based oxide exists on a surface of the metal magnetic material. 18 . The dust core according to claim 3 , wherein an oxide film comprising a Si—O based oxide exists on a surface of the metal magnetic material.
Assignees
Inventors
Classifications
characterised by a mixture of particles of different sizes or by the particle size distribution · CPC title
Metallic particles coated with a non-metal (coated with lubricating or binding agents or with organic material B22F1/10) · CPC title
Metallic powder containing lubricating or binding agents; Metallic powder containing organic material · CPC title
- H01F41/0246Primary
Manufacturing of magnetic circuits by moulding or by pressing powder (magnetic cores made by moulding or by pressing powder H01F27/255; soft magnetic particles H01F1/20, H01F1/36) · CPC title
the particles being insulated · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2018261385A1 cover?
- A dust core includes a metal magnetic material and a resin. Fine particles exist on a surface of the dust core.
- Who is the assignee on this patent?
- Tdk Corp
- What technology area does this patent fall under?
- Primary CPC classification H01F41/0246. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Sep 13 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).