System And Method For Making A Structured Material
US-2024424553-A1 · Dec 26, 2024 · US
Soft magnetic metal powder and soft magnetic metal powder core using the same
US9881721B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9881721-B2 |
| Application number | US-201514712227-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 14, 2015 |
| Priority date | May 14, 2014 |
| Publication date | Jan 30, 2018 |
| Grant date | Jan 30, 2018 |
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Abstract
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The present invention relates to a soft magnetic metal powder having iron as the main component and containing boron, wherein, the content of iron inside the soft magnetic metal powder is 98 mass % or more, the content of boron in the particle of the soft magnetic metal powder is 10 to 150 ppm, and the metal particle has a film of boron nitride on the surface. The present invention also relates to a soft magnetic metal powder core prepared by using the soft magnetic metal powder.
First claim
Opening claim text (preview).
What is claimed is: 1. A soft magnetic metal powder, comprising iron as the main component and containing boron, wherein, the content of iron in the soft magnetic metal powder is 98 mass % or more, the content of boron inside the metal particles of the soft magnetic metal powder is 10 to 150 ppm, and the metal particles comprise a film of boron nitride on surfaces of the metal particles. 2. The soft magnetic metal powder of claim 1 , wherein, among the metal particles constituting the soft magnetic metal powder, the roundness of the cross-section is 0.80 or more in 90% or more of the metal particles. 3. The soft magnetic metal powder of claim 1 , wherein, 90% or more of the metal particles constituting the soft magnetic metal powder consist of one single grain. 4. The soft magnetic metal powder of claim 1 , wherein, the content of oxygen contained in the soft magnetic metal powder is 500 ppm or less. 5. A soft magnetic metal powder core comprising the soft magnetic metal powder of claim 1 . 6. A soft magnetic metal powder core comprising the soft magnetic metal powder of claim 1 , wherein, the content of boron nitride in the soft magnetic metal powder core is 50 to 4850 ppm.
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Classifications
Metallic particles coated with a non-metal (coated with lubricating or binding agents or with organic material B22F1/10) · CPC title
- H01F1/24Primary
the particles being insulated · CPC title
- H01F1/20Primary
in the form of particles, e.g. powder (H01F1/147 takes precedence) · CPC title
using a particular milling fluid · CPC title
Operations & Transport · mapped topic
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- What does patent US9881721B2 cover?
- The present invention relates to a soft magnetic metal powder having iron as the main component and containing boron, wherein, the content of iron inside the soft magnetic metal powder is 98 mass % or more, the content of boron in the particle of the soft magnetic metal powder is 10 to 150 ppm, and the metal particle has a film of boron nitride on the surface. The present invention also relates…
- Who is the assignee on this patent?
- Tdk Corp
- What technology area does this patent fall under?
- Primary CPC classification H01F1/24. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 30 2018 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).