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Ferrite powder for bonded magnets, method for producing the same and ferrite bonded magnet
US10665371B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10665371-B2 |
| Application number | US-201515515902-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 30, 2015 |
| Priority date | Sep 30, 2014 |
| Publication date | May 26, 2020 |
| Grant date | May 26, 2020 |
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- Title
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Abstract
Official abstract text for this publication.
A ferrite powder for bonded magnets having a high iHc value usable even in a low temperature environment, a method for producing the same, and a bonded magnet using the ferrite powder and having high iHc value which can be used even in a low temperature environment, wherein a specific surface area is 2.20 m 2 /g or more and less than 3.20 m 2 /g; a compression density is 3.30 g/cm 3 or more and less than 3.60 g/cm 3 , and a compressed molding has a coercive force of 3250 Oe or more and less than 3800 Oe.
First claim
Opening claim text (preview).
The invention claimed is: 1. A ferrite powder for bonded magnets, wherein: a specific surface area is 2.20 m 2 /g or more and less than 3.20 m 2 /g; a compression density is 3.30 g/cm 3 or more and less than 3.60 g/cm 3 , and a coercive force of the ferrite powder after having been compressed under a pressure of 2 tons/cm 2 is 3250 Oe or more and less than 3800 Oe.
Assignees
Inventors
Classifications
with a non-magnetic core · CPC title
- H01F1/0315Primary
Ferrites · CPC title
- H01F1/113Primary
in a bonding agent · CPC title
Permanent magnets {[PM]} · CPC title
Surface area · CPC title
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- What does patent US10665371B2 cover?
- A ferrite powder for bonded magnets having a high iHc value usable even in a low temperature environment, a method for producing the same, and a bonded magnet using the ferrite powder and having high iHc value which can be used even in a low temperature environment, wherein a specific surface area is 2.20 m 2 /g or more and less than 3.20 m 2 /g; a compression density is 3.30 g/cm 3 or more an…
- Who is the assignee on this patent?
- Dowa Electronics Materials Co Ltd, Dowa F Tec Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01F1/0315. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 26 2020 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).