Device and method for the production of a metallic strip
US-9700937-B2 · Jul 11, 2017 · US
Ferromagnetic amorphous alloy ribbon with reduced surface protrusions, method of casting and application thereof
US8968490B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8968490-B2 |
| Application number | US-92322410-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 9, 2010 |
| Priority date | Sep 9, 2010 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A ferromagnetic amorphous alloy ribbon includes an alloy having a composition represented by Fe a Si b B c C d where 80.5≦a≦83 at. %, 0.5≦b≦6 at. %, 12≦c≦16.5 at. %, 0.01≦d≦1 at. % with a+b+c+d=100 and incidental impurities, the ribbon being cast from a molten state of the alloy with a molten alloy surface tension of greater than or equal to 1.1 N/m on a chill body surface; the ribbon having a ribbon length, a ribbon thickness, and a ribbon surface facing the chill body surface; the ribbon having ribbon surface protrusions being formed on the ribbon surface facing the chill body surface; the ribbon surface protrusions being measured in terms of a protrusion height and a number of protrusions; the protrusion height exceeding 3 μm and less than four times the ribbon thickness, and the number of protrusions being less than 10 within 1.5 m of the cast ribbon length; and the alloy ribbon in its annealed straight strip form having a saturation magnetic induction exceeding 1.60 T and exhibiting a magnetic core loss of less than 0.14 W/kg when measured at 60 Hz and at 1.3 T induction level in its annealed straight strip form. The ribbon is suitable for transformer cores, rotational machines, electrical chokes, magnetic sensors, and pulse power devices.
First claim
Opening claim text (preview).
What is claimed is: 1. A ferromagnetic amorphous alloy ribbon comprising: an alloy having a composition represented by Fe a Si b B c C d where 80.5≦a≦83 at. %, 0.5≦b≦6 at. %, 12≦c≦16.5 at. %, 0.01≦d≦1 at. % with a+b+c+d=100 and incidental impurities, having been cast from a molten state of the alloy with a molten alloy surface tension of greater than or equal to 1.1 N/m on a chill body surface, the ribbon having a ribbon length, a ribbon thickness, and a ribbon surface facing t…
Assignees
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Classifications
Electricity · mapped topic
Operations & Transport · mapped topic
Electricity · mapped topic
- B22D11/0611Primary
Operations & Transport · mapped topic
Electricity · mapped topic
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- What does patent US8968490B2 cover?
- A ferromagnetic amorphous alloy ribbon includes an alloy having a composition represented by Fe a Si b B c C d where 80.5≦a≦83 at. %, 0.5≦b≦6 at. %, 12≦c≦16.5 at. %, 0.01≦d≦1 at. % with a+b+c+d=100 and incidental impurities, the ribbon being cast from a molten state of the alloy with a molten alloy surface tension of greater than or equal to 1.1 N/m on a chill body surface; the ribbon having a…
- Who is the assignee on this patent?
- Theisen Eric A, Perrozi James, Ogawa Yuichi, and 5 more
- What technology area does this patent fall under?
- Primary CPC classification B22D11/0611. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 03 2015 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).