Method for producing composite material
US-2024052186-A1 · Feb 15, 2024 · US
Method and apparatus for producing core-shell type metal nanoparticles
US10076745B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10076745-B2 |
| Application number | US-201514614738-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 5, 2015 |
| Priority date | Feb 7, 2014 |
| Publication date | Sep 18, 2018 |
| Grant date | Sep 18, 2018 |
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Abstract
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A method and apparatus for producing core-shell type metal nanoparticles which are excellent in productivity are provided, in particular, the present invention provides a method of production of core-shell type metal nanoparticles including (a) a step of introducing a solution of a salt of a first metal to a first flow path of a flow type reaction apparatus and applying plasma to the solution of the salt of the first metal in the first flow path to obtain a solution which contains metal nanoparticles of the first metal and (b) a step of introducing a solution of a salt of a second metal to a second flow path of the flow type reaction apparatus, making it merge with the solution which contains metal nanoparticles of the first metal to obtain a mixed solution, and applying plasma to the mixed solution to cover the metal nanoparticles of the first metal by the second metal.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of production of a thermoelectric conversion material comprising: (a) a step of introducing a solution of a salt of Bi to a first flow path of a flow type reaction apparatus and applying plasma to the solution of the salt of Bi in the first flow path to obtain a solution which contains metal nanoparticles of Bi and (b) a step of introducing a solution of a salt of Te to a second flow path of the flow type reaction apparatus, making it merge with the solution which contains metal nanoparticles of Bi at a third flow path to obtain a mixed solution, and applying plasma to the mixed solution in the third flow path to cover the metal nanoparticles of Bi by Te to obtain Bi—Te core-shell type metal particles, (c) a step of sintering the Bi—Te core-shell type metal particles by heating while sealed or heating while sealed and under pressure, wherein a power of plasma applied in the first flow path is set to 100 W or more and 10 kW or less to precipitate Bi and a power of plasma applied in the third flow path is set to 30 W or more and 10 kW or less to precipitate Te. 2. The method according to claim 1 wherein an equivalent diameter when converting cross-sectional areas of the first flow path and the third flow path to a circle of the same area are respectively 1 μm to 10 mm.
Assignees
Inventors
Classifications
Metallic particles coated with metal · CPC title
Nanosized particles · CPC title
of metal substrates · CPC title
of particles · CPC title
Mixing {(B01J37/0009, B01J37/0018 take precedence)} · CPC title
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- What does patent US10076745B2 cover?
- A method and apparatus for producing core-shell type metal nanoparticles which are excellent in productivity are provided, in particular, the present invention provides a method of production of core-shell type metal nanoparticles including (a) a step of introducing a solution of a salt of a first metal to a first flow path of a flow type reaction apparatus and applying plasma to the solution o…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd, Univ Nagoya Nat Univ Corp
- What technology area does this patent fall under?
- Primary CPC classification B22F9/24. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Sep 18 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).