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
US2017221619A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017221619-A1 |
| Application number | US-201515515003-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 29, 2015 |
| Priority date | Oct 1, 2014 |
| Publication date | Aug 3, 2017 |
| Grant date | — |
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- Title
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Abstract
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The object of the present invention relates to ferrite particles for bonded magnets and a resin composition for bonded magnets which is capable of obtaining a bonded magnet molded product having a good magnetic force and a magnetic waveform as well as high iHc and Hk by injection molding. The present invention aims at providing a bonded magnet molded product using the ferrite particles and the resin composition. The aforementioned object of the present invention can be achieved by ferrite particles for bonded magnets which have a crystal distortion of not more than 0.14 as measured by XRD, and an average particle diameter of not less than 1.30 μm as measured by Fisher method; a resin composition for bonded magnets; and a molded product obtained by injection-molding the resin composition.
First claim
Opening claim text (preview).
1 . Ferrite particles for bonded magnets, having a crystal distortion of not more than 0.14 as measured by XRD, and an average particle diameter of not less than 1.30 μm as measured by Fisher method. 2 . The ferrite particles for bonded magnets according to claim 1 , wherein the ferrite particles are magnetoplumbite-type ferrite particles. 3 . A resin composition for bonded magnets, comprising 83 to 93% by weight of the ferrite particles for bonded magnets as claimed in claim 1 to 17% by weight of an organic binder component. 4 . A molded product comprising the resin composition for bonded magnets as claimed in claim 3 . 5 . The molded product according to claim 4 , wherein the molded product is an injection-molded product.
Assignees
Inventors
Classifications
in the form of particles {(for magnetic record carriers G11B5/70626)} · CPC title
- H01F1/113Primary
in a bonding agent · CPC title
Magnetic properties · CPC title
Micrometer sized, i.e. from 1-100 micrometer · CPC title
defined by measured X-ray, neutron or electron diffraction data · CPC title
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- What does patent US2017221619A1 cover?
- The object of the present invention relates to ferrite particles for bonded magnets and a resin composition for bonded magnets which is capable of obtaining a bonded magnet molded product having a good magnetic force and a magnetic waveform as well as high iHc and Hk by injection molding. The present invention aims at providing a bonded magnet molded product using the ferrite particles and the …
- 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 Aug 03 2017 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).