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Preparation method of graphene-metal composite material

A metal composite material and metal composite technology, applied in the field of preparation of graphene-metal composite materials, can solve the problems of graphene agglomeration, time-consuming and labor-consuming, poor wettability, etc., achieve good intrinsic properties, improve integrity sex, avoiding reunion effects

Active Publication Date: 2020-03-27
北京碳垣新材料科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

But there are still many problems to be solved: 1) the graphene used in the experiment often has defects, which seriously affect the performance of graphene; 2) the wettability between graphene and some metal substrates is not good, which makes the interface of composite materials The bonding strength is not good, and sometimes the interface will react to form other phases with poor performance; 3) Graphene is easy to agglomerate in the metal matrix, and its morphology and uniformity are difficult to control; 4) Graphene and metal The strengthening mechanism between the matrix is ​​not clear, the experimental process is time-consuming and labor-intensive, and the experimental results are accidental

Method used

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  • Preparation method of graphene-metal composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1 In-situ growth method of graphene-copper composite powder material X1

[0029] Specifically include the following steps:

[0030] Metal copper powder with a particle size of 50 microns is selected as the matrix, multi-layer graphene powder is used as the carbon source, and the two are uniformly mixed and dispersed using a ball mill, so that the multi-layer graphene is coated on the surface of the copper metal powder.

[0031] Put the mixed powder in the uniform dispersion device equipped with the chemical vapor deposition furnace, use the uniform dispersion device to roll and stir the powder into the chemical vapor deposition furnace, and perform the in-situ growth of graphene on the surface of the copper powder. The specific process of in-situ growth is: put the container into the chemical vapor deposition furnace at room temperature, and close the furnace tube; use the vacuum pump to continuously pump out the residual air in the furnace, then turn off the...

Embodiment 2

[0035] Example 2 The preparation method of graphene-copper-nickel composite powder material X2

[0036] The metal copper-nickel alloy powder with a particle size of 100 microns is selected as the matrix, and the multi-layer graphene powder is used as the carbon source, and the two are uniformly mixed and dispersed using a ball mill, so that the multi-layer graphene is coated on the surface of the copper-nickel alloy powder.

[0037] Put the mixed powder in the uniform dispersion device equipped with the chemical vapor deposition furnace, and use the uniform dispersion device to roll and stir the powder into the chemical vapor deposition furnace for in-situ growth of graphene on the surface of the copper powder. The specific process of in-situ growth is: put the container into the chemical vapor deposition furnace at room temperature, and close the furnace tube; use the vacuum pump to continuously pump out the residual air in the furnace, then turn off the vacuum pump and feed t...

Embodiment 3

[0040] Example 3 The preparation method of graphene-titanium composite powder material X3

[0041] Metal titanium powder with a particle size of 70 microns is selected as the matrix, and multi-layer graphene powder is used as the carbon source, and the two are uniformly mixed and dispersed using a ball mill, so that the multi-layer graphene is coated on the surface of the titanium metal powder.

[0042] Put the mixed powder in the uniform dispersion device equipped with the chemical vapor deposition furnace, and use the uniform dispersion device to roll and stir the powder into the chemical vapor deposition furnace for in-situ growth of graphene on the surface of the titanium powder. The specific process of in-situ growth is as follows: put the container into the chemical vapor deposition furnace at room temperature, close the furnace tube; use the vacuum pump to continuously pump out the residual air in the furnace, then turn off the vacuum pump and feed the carrier gas, of wh...

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Abstract

The invention relates to a preparation method of a graphene-metal composite material, and the graphene-metal composite material comprises a composite powder material, a composite material blank and acomposite material; the preparation method of the graphene-metal composite powder material comprises the following steps: mixing and dispersing metal powder and multilayer graphene powder; carrying out in-situ growth on the dispersed powder, performing cooling and taking out the powder; mixing and dispersing the taken composite powder and the multilayer graphene; carrying out in-situ growth on thedispersed mixture, performing cooling and taking out the mixture; and repeating the steps of redispersion and in-situ growth for 2-10 times to obtain a graphene-metal powder composite material, wherein a graphene composite material blank and the graphene-metal composite material are both prepared from a graphene-metal composite powder material through processing. According to the preparation method, multilayer graphene is used as a carbon source, and unstable carbon is converted into the carbon source by utilizing the characteristic that defective carbon in the graphene is easy to sublimate,so high-quality in-situ growth of the graphene on the surface of the metal powder is guaranteed.

Description

technical field [0001] The invention relates to the field of metal composite materials, in particular to a preparation method of graphene-metal composite materials. Background technique [0002] The application field, development speed and production scale of metal matrix composite materials have become an important symbol to measure a country's technological level and industrialization process, and it is a strategic new material that countries are competing to develop. In the face of the rapid development of aerospace and defense technology and civil engineering such as high-speed rail, the performance of traditional metal materials can no longer meet the performance requirements, and the demand for metal matrix composite materials with excellent comprehensive performance has become increasingly prominent. [0003] Graphene-reinforced metal matrix composites have great application potential. Researchers have done a lot of research, and the related preparation methods are re...

Claims

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Application Information

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IPC IPC(8): C23C16/26C23C16/56B22F9/04B22F1/02B22F3/02
CPCC23C16/26C23C16/56B22F9/04B22F3/02B22F2009/043B22F1/16
Inventor 侯星云
Owner 北京碳垣新材料科技有限公司
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