Processing of anisotropic permanent magnet without magnetic field
US-11948733-B2 · Apr 2, 2024 · US
Ferrite particles for bonded magnets, resin composition for bonded magnets, and molded product using the same
US2015041702A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2015041702-A1 |
| Application number | US-201314389102-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 14, 2013 |
| Priority date | Mar 30, 2012 |
| Publication date | Feb 12, 2015 |
| Grant date | — |
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Abstract
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The present invention relates to ferrite particles for bonded magnets having a bulk density of not more than 0.75 g/cm 3 and a degree of compaction of not less than 65%, a resin composition for bonded magnets using the ferrite particles and the composition, and a rotor. The ferrite particles for bonded magnets and the resin composition for bonded magnets according to the present invention are capable of providing a bonded magnet molded product having a good tensile elongation and an excellent magnetic properties.
First claim
Opening claim text (preview).
1 . Ferrite particles for bonded magnets, having a bulk density of not more than 0.75 g/cm 3 and a degree of compaction of not less than 65%. 2 . The ferrite particles for bonded magnets according to claim 1 , wherein the ferrite particles have an average particle diameter of 0.9 to 3.0 μm. 3 . The ferrite particles for bonded magnets according to claim 1 , wherein the ferrite particles are magnetoplumbite-type ferrite particles. 4 . A resin composition for bonded magnets, comprising 83 to 93% by weight of the ferrite particles for bonded magnets as claimed in claim 1 , and 7 to 17% by weight of an organic binder component. 5 . A molded product comprising the ferrite particles for bonded magnets as claimed in claim 1 . 6 . The molded product according to claim 4 , wherein the molded product is a rotor.
Assignees
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Classifications
Mixed oxides or hydroxides, (C01G49/0009 takes precedence) · CPC title
expressed by specific surface values · CPC title
based on ferrites · CPC title
Particulate matter [e.g., sphere, flake, etc.] · CPC title
Strontium oxides or oxide-forming salts thereof · CPC title
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- What does patent US2015041702A1 cover?
- The present invention relates to ferrite particles for bonded magnets having a bulk density of not more than 0.75 g/cm 3 and a degree of compaction of not less than 65%, a resin composition for bonded magnets using the ferrite particles and the composition, and a rotor. The ferrite particles for bonded magnets and the resin composition for bonded magnets according to the present invention are …
- Who is the assignee on this patent?
- Toda Kogyo Corp
- What technology area does this patent fall under?
- Primary CPC classification H01F1/113. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Feb 12 2015 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).