System And Method For Making A Structured Material
US-2024424553-A1 · Dec 26, 2024 · US
Soft magnetic metal particle, dust core, and magnetic component
US2024304366A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024304366-A1 |
| Application number | US-202418594115-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 4, 2024 |
| Priority date | Mar 6, 2023 |
| Publication date | Sep 12, 2024 |
| Grant date | — |
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Abstract
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A soft magnetic metal particle may include a core particle and an insulating film over a surface of the core particle. The insulating film may include a complex oxide containing Si and B. B may constitute 1.0 mol % or more and 60.0 mol % or less of a total of Si and B in the insulating film.
First claim
Opening claim text (preview).
What is claimed is: 1 . A soft magnetic metal particle comprising: a core particle; and an insulating film over a surface of the core particle, wherein the insulating film comprises a complex oxide containing Si and B; and B constitutes 1.0 mol % or more and 60.0 mol % or less of a total of Si and B in the insulating film. 2 . The soft magnetic metal particle according to claim 1 , wherein the core particle comprises Fe. 3 . The soft magnetic metal particle according to claim 1 , wherein the insulating film exhibits crystallinity. 4 . The soft magnetic metal particle according to claim 1 , wherein the insulating film comprises a single-layer film. 5 . The soft magnetic metal particle according to claim 1 , wherein B constitutes 10.0 mol % or more and 30.0 mol % or less of the total of Si and B in the insulating film. 6 . The soft magnetic metal particle according to claim 1 , wherein the insulating film has a thickness of 100 nm or more and 200 nm or less. 7 . The soft magnetic metal particle according to claim 1 , wherein the insulating film covers 90% or more of an entire surface of the core particle. 8 . The soft magnetic metal particle according to claim 1 , wherein the insulating film covers an entire surface of the core particle. 9 . The soft magnetic metal particle according to claim 1 , wherein the insulating film does not substantially contain fluorine. 10 . The soft magnetic metal particle according to claim 1 , wherein the insulating film does not substantially contain boron nitride. 11 . The soft magnetic metal particle according to claim 1 , wherein the insulating film further comprises at least one of non-metal elements of C, N, or P. 12 . The soft magnetic metal particle according to claim 1 , wherein the insulating film further comprises at least another metal element selected from the group consisting of Ba, Ca, Mg, Al, Ni, Mn, Zn, Zr, Ti, Nb, and Ta. 13 . The soft magnetic metal particle according to claim 12 , wherein a content of the another metal element is 1 mol % or less with respect to a content of B. 14 . The soft magnetic metal particle according to claim 1 , wherein the insulating film is in direct contact with the surface of the core particle. 15 . The soft magnetic metal particle according to claim 1 , wherein another film other than the insulating film is interposed between the surface of the core particle and the insulating film. 16 . The soft magnetic metal particle according to claim 15 , wherein the another film has a thickness 50% or less of a thickness of the insulating film. 17 . The soft magnetic metal particle according to claim 15 , wherein the another film comprises SiO 2 . 18 . The soft magnetic metal particle according to claim 1 , wherein a median value D50 particle size of the core particle is in a range of 1 μm to 100 μm. 19 . A dust core comprising the soft magnetic metal particle according to claim 1 . 20 . A magnetic component comprising the soft magnetic metal particle according to claim 1 .
Assignees
Inventors
Classifications
made from powder (powder coatings on sheets H01F3/02; on strips or ribbons H01F3/04; on wires H01F3/06) · CPC title
made from particles (H01F27/26 takes precedence) · CPC title
- H01F1/24Primary
the particles being insulated · CPC title
- H01F1/14766Primary
Fe-Si based alloys · CPC title
mixtures of metallic and non-metallic particles; metallic particles having oxide skin · CPC title
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- What does patent US2024304366A1 cover?
- A soft magnetic metal particle may include a core particle and an insulating film over a surface of the core particle. The insulating film may include a complex oxide containing Si and B. B may constitute 1.0 mol % or more and 60.0 mol % or less of a total of Si and B in the insulating film.
- 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 Thu Sep 12 2024 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).