Core-shell nanoparticles comprising same element of different isotopes
US-9835628-B2 · Dec 5, 2017 · US
Forming method of metal layer
US2020147683A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020147683-A1 |
| Application number | US-201916676444-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 7, 2019 |
| Priority date | Nov 10, 2018 |
| Publication date | May 14, 2020 |
| Grant date | — |
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Abstract
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Provided is a forming method of a metal layer suitable for a 3D printing process. The method includes the steps of providing a plurality of metal particles on a substrate; applying an oxide-removing agent to the metal particles to remove metal oxides on the metal particles; at a first temperature, performing a first heat treatment on the metal particles for which the metal oxides are removed to form a near shape; and at a second temperature, performing a second heat treatment on the near shape to form a sintered body. The first temperature is lower than the second temperature.
First claim
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What is claimed is: 1 . A forming method of a metal layer suitable for a 3D printing process, the forming method of the metal layer comprising: providing a plurality of metal particles on a substrate; applying an oxide-removing agent on the metal particles to remove metal oxides on the metal particles; performing a first heat treatment on the metal particles for which the metal oxides are removed at a first temperature to form a near shape; and performing a second heat treatment on the near shape at a second temperature to form a sintered body, wherein the first temperature is lower than the second temperature. 2 . The forming method of the metal layer of claim 1 , wherein the oxide-removing agent comprises an organic acid, an inorganic acid, a flux, or carbon particles. 3 . The forming method of the metal layer of claim 2 , wherein the organic acid comprises oxalic acid, acetic acid, citric acid, or a combination thereof. 4 . The forming method of the metal layer of claim 2 , wherein the inorganic acid comprises phosphoric acid, sulfuric acid, or a combination thereof. 5 . The forming method of the metal layer of claim 2 , wherein the carbon particles are applied to the metal particles in a hydrogen atmosphere. 6 . The forming method of the metal layer of claim 1 , wherein a method of applying the oxide-removing agent comprises inkjet, micro-dispensing, or spraying. 7 . The forming method of the metal layer of claim 1 , wherein a material of the metal particles comprises a metal or an alloy. 8 . The forming method of the metal layer of claim 1 , further comprising applying the oxide-removing agent to the metal particles at an activation temperature of the oxide-removing agent, and the activation temperature is lower than the first temperature. 9 . The forming method of the metal layer of claim 8 , further comprising directly increasing a temperature to the first temperature at the activation temperature after the metal oxides on the metal particles are removed.
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Pre-treatment · CPC title
Processes of additive manufacturing · CPC title
Operations & Transport · mapped topic
Operations & Transport · mapped topic
- B22F1/0088Primary
Operations & Transport · mapped topic
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- What does patent US2020147683A1 cover?
- Provided is a forming method of a metal layer suitable for a 3D printing process. The method includes the steps of providing a plurality of metal particles on a substrate; applying an oxide-removing agent to the metal particles to remove metal oxides on the metal particles; at a first temperature, performing a first heat treatment on the metal particles for which the metal oxides are removed to…
- Who is the assignee on this patent?
- Ind Tech Res Inst
- What technology area does this patent fall under?
- Primary CPC classification B22F1/0088. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu May 14 2020 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).