Soft magnetic metal powder and soft magnetic metal powder core using the same
US-2015332821-A1 · Nov 19, 2015 · US
Soft magnetic metal powder and soft magnetic metal powder core using the same
US9793035B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9793035-B2 |
| Application number | US-201514712326-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 14, 2015 |
| Priority date | May 14, 2014 |
| Publication date | Oct 17, 2017 |
| Grant date | Oct 17, 2017 |
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Abstract
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The present invention relates to a soft magnetic metal powder which has Fe as the main component and contains Si and B, wherein, the content of Si in the soft magnetic metal powder is 1 to 15 mass %, the content of boron inside the metal particle of the soft magnetic metal powder is 10 to 150 ppm, and the 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 metal particles that include Fe, as a main component, Si, and B, wherein, the content of Si in the soft magnetic metal powder is 1 to 15 mass %, the content of B inside the metal particles of the soft magnetic metal powder is 22 to 150 ppm, and a surface of the metal particles comprises a film of boron nitride. 2. The soft magnetic metal powder of claim 1 , wherein, the content of Cr in the soft magnetic metal powder is 1 to 10 mass %. 3. The soft magnetic metal powder of claim 1 , wherein, the roundness of the cross-section is 0.80 or more in 90% or more of the metal particles. 4. The soft magnetic metal powder of claim 1 , wherein, 90% or more of the metal particles consists of one single grain. 5. 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. 6. A soft magnetic metal powder core which is prepared by using the soft magnetic metal powder of claim 1 . 7. A soft magnetic metal powder core which is prepared by using the soft magnetic metal powder of claim 1 , wherein, the content of the boron nitride in the soft magnetic powder cor is 50 to 4790 ppm.
Assignees
Inventors
Classifications
- H01F1/24Primary
the particles being insulated · CPC title
Nitrogen · CPC title
Operations & Transport · mapped topic
characterised by the range of the alloying elements · CPC title
Aspects linked to processes or compositions used in powder metallurgy · CPC title
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- What does patent US9793035B2 cover?
- The present invention relates to a soft magnetic metal powder which has Fe as the main component and contains Si and B, wherein, the content of Si in the soft magnetic metal powder is 1 to 15 mass %, the content of boron inside the metal particle of the soft magnetic metal powder is 10 to 150 ppm, and the particle has a film of boron nitride on the surface. The present invention also relates to…
- 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 Oct 17 2017 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).