System And Method For Making A Structured Material
US-2024424553-A1 · Dec 26, 2024 · US
Method for manufacturing magnetic grain compact
US2016163448A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016163448-A1 |
| Application number | US-201615040534-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 10, 2016 |
| Priority date | Apr 27, 2011 |
| Publication date | Jun 9, 2016 |
| Grant date | — |
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- Title
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Abstract
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A method for manufacturing a magnetic grain compact, includes: providing multiple metal grains constituted by soft magnetic alloy containing Fe, Si, and a metal element M that oxidizes more easily than Fe; compacting the metal grains; and forming oxide film formed on a surface of the metal grains, and forming first bonding parts where adjacent metal grains are directly contacted and bonded together, and second bonding parts where adjacent metal grains are bonded together via the oxide film formed around the entire surface of said adjacent metal grains other than the first bonding parts, by applying heat treatment to the compacted metal grains, thereby obtaining a magnetic grain compact.
First claim
Opening claim text (preview).
We/I claim: 1 . A method for manufacturing a magnetic grain compact, comprising: providing multiple metal grains constituted by soft magnetic alloy containing Fe, Si, and a metal element M that oxidizes more easily than Fe; compacting the metal grains; and forming oxide film on a surface of the metal grains, and forming first bonding parts where adjacent metal grains are directly contacted and bonded together by metal bonding, and second bonding parts where adjacent metal grains are bonded together by bonding of the oxide film formed around the entire surface of said adjacent metal grains other than the first bonding parts, by applying heat treatment to the compacted metal grains, thereby obtaining a magnetic grain compact. 2 . A method according to claim 2 , wherein the oxide film formed on the surface of the metal grains contains Fe and M. 3 . A method according to claim 1 , wherein a molar ratio of M relative to Fe in the oxide film is higher than a molar ratio of M relative to Fe in the metal grains. 4 . A method according to claim 3 , wherein the oxide film is formed by heat treatment performed in an oxidizing ambience. 5 . A method according to claim 1 , wherein the grain compact contains voids formed in an area other than the first and second bonding parts and surrounded by the oxide film. 6 . A method according to claim 1 , wherein the metal grains before being compacted have a surface on which Fe exists as metal and also as oxide.
Assignees
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Classifications
Supplementary information concerning processes or compositions relating to powder metallurgy · CPC title
with insulating coating · CPC title
Terminals; Tapping arrangements {for signal inductances} · CPC title
- H01F1/24Primary
the particles being insulated · CPC title
made from particles (H01F27/26 takes precedence) · CPC title
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- What does patent US2016163448A1 cover?
- A method for manufacturing a magnetic grain compact, includes: providing multiple metal grains constituted by soft magnetic alloy containing Fe, Si, and a metal element M that oxidizes more easily than Fe; compacting the metal grains; and forming oxide film formed on a surface of the metal grains, and forming first bonding parts where adjacent metal grains are directly contacted and bonded toge…
- Who is the assignee on this patent?
- Taiyo Yuden Kk
- What technology area does this patent fall under?
- Primary CPC classification H01F1/24. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jun 09 2016 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).