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Dust core, method of manufacturing said dust core, and inductance element and rotary electric machine including said dust core
US9449752B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9449752-B2 |
| Application number | US-201414522162-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 23, 2014 |
| Priority date | Oct 25, 2013 |
| Publication date | Sep 20, 2016 |
| Grant date | Sep 20, 2016 |
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Abstract
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It is an objective of the invention to provide a dust core made of an Fe-based amorphous metal powder having excellent magnetic properties, in which the dust core has a higher-than-conventional density, excellent magnetic properties and a high mechanical strength. There is provided a dust core including a mixture powder compacted, the mixture powder including: an Fe-based amorphous metal powder having a crystallization temperature T x (unit: K), the Fe-based amorphous metal powder being plastically deformed, the plastically deformed metal Fe-based amorphous metal powder having a filling factor in the dust core higher than 80% and not higher than 99%; and a resin binder having a melting point T m (unit: K), in which the T x and T m satisfy a relationship of “T m /T x ≧0.70”.
First claim
Opening claim text (preview).
What is claimed is: 1. A dust core, comprising a mixture powder compacted, the mixture powder including: an Fe-based amorphous metal powder having a crystallization temperature T x (unit: K), the Fe-based amorphous metal powder being plastically deformed, the plastically deformed Fe-based amorphous metal powder having a filling factor in the dust core higher than 80% and not higher than 99%; and a resin binder having a melting point T m (unit: K), wherein the T x and T m s…
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Operations & Transport · mapped topic
Operations & Transport · mapped topic
Chemistry & Metallurgy · mapped topic
Electricity · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US9449752B2 cover?
- It is an objective of the invention to provide a dust core made of an Fe-based amorphous metal powder having excellent magnetic properties, in which the dust core has a higher-than-conventional density, excellent magnetic properties and a high mechanical strength. There is provided a dust core including a mixture powder compacted, the mixture powder including: an Fe-based amorphous metal powder…
- Who is the assignee on this patent?
- Hitachi Metals Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01F27/255. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 20 2016 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).