Coil component
US-2017294260-A1 · Oct 12, 2017 · US
Magnetic core and method for producing the same
US10128041B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10128041-B2 |
| Application number | US-201615247145-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 25, 2016 |
| Priority date | Sep 1, 2015 |
| Publication date | Nov 13, 2018 |
| Grant date | Nov 13, 2018 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A magnetic core includes soft magnetic material particles each including a soft magnetic material and an insulating film on a surface of the soft magnetic material, the insulating film having a thickness in the range of 10 nm or more and 100 nm or less; and a binder that binds the soft magnetic material particles together and contains a non-silicate glass having a softening point in the range of 350° C. or higher and 500° C. or lower. The soft magnetic material contains an amorphous phase and has a transition temperature of 600° C. or lower at which a crystal structure changes, and the magnetic core has a resistivity of 107 Ωcm or more.
First claim
Opening claim text (preview).
What is claimed is: 1. A magnetic core comprising: soft magnetic material particles each including: a soft magnetic material, and an insulating film on a surface of the soft magnetic material, the insulating film having a thickness in the range of 10 nm or more and 100 nm or less; and a binder that binds the soft magnetic material particles together and contains a non-silicate glass having a softening point in the range of 350° C. or higher and 500° C. or lower, wherein the soft magnetic material contains an amorphous phase and has a transition temperature of 600° C. or lower at which a crystal structure changes, the magnetic core has a resistivity of 10 7 Ωcm or more, and the non-silicate glass is a V—Te—O glass. 2. The magnetic core according to claim 1 , wherein the transition temperature is a crystallization temperature. 3. The magnetic core according to claim 1 , wherein the soft magnetic material has a heteroamorphous structure in which nanocrystals are dispersed in an amorphous matrix, and the transition temperature is a crystallization temperature. 4. The magnetic core according to claim 1 , wherein the soft magnetic material has a nanocrystal structure that contains a nanosized α-Fe main phase and an intergranular amorphous phase, and the transition temperature is a crystallization temperature. 5. The magnetic core according to claim 1 , wherein the non-silicate glass has a total alkali metal content of 0.1% by weight or less. 6. An electronic component comprising the magnetic core according to claim 1 . 7. The magnetic core according to claim 1 , wherein the insulating film is made of metal alkoxide.
Assignees
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Classifications
Metallic powder characterised by particles having an amorphous microstructure · CPC title
containing inorganic lubricating or binding agents, e.g. metal salts · CPC title
Metallic particles coated with a non-metal (coated with lubricating or binding agents or with organic material B22F1/10) · CPC title
Metallic powder coated with organic material · CPC title
Magnetic · CPC title
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- What does patent US10128041B2 cover?
- A magnetic core includes soft magnetic material particles each including a soft magnetic material and an insulating film on a surface of the soft magnetic material, the insulating film having a thickness in the range of 10 nm or more and 100 nm or less; and a binder that binds the soft magnetic material particles together and contains a non-silicate glass having a softening point in the range o…
- Who is the assignee on this patent?
- Murata Manufacturing Co
- What technology area does this patent fall under?
- Primary CPC classification H01F1/26. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 13 2018 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 10 related publications on this page (citations in our corpus or others sharing the same primary CPC).