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Preparation method of copper matrix graphene alloy

A copper-based olefin and copper alloy technology, applied in the field of copper-based olefin alloy preparation, can solve the problems of small size, difficult dispersion, and large specific surface area of ​​graphene, and achieve improved casting and forging performance, good bonding interface, and dispersibility. excellent effect

Inactive Publication Date: 2015-11-18
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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Problems solved by technology

However, graphene has the problems of small size, large specific surface area, difficulty in dispersing, and easy agglomeration, which seriously affects the performance of graphene alloys.
At present, the process of graphene-reinforced metal matrix composites has the problem of low output, and it is difficult to form large-scale production
The preparation of ene alloys by powder metallurgy process includes "sheath degassing" + "hot isostatic pressing". The sheath degassing is prone to poor sealing and air leakage, which makes the yield low and increases the production cost and cycle.

Method used

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  • Preparation method of copper matrix graphene alloy
  • Preparation method of copper matrix graphene alloy
  • Preparation method of copper matrix graphene alloy

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Experimental program
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Embodiment 1

[0038] To prepare copper-based graphene, the specific steps are as follows:

[0039] a) Prepare graphene and copper mixed powder, the powder includes: graphene 10g (prepared by Hummer's method), copper powder 1kg; copper powder 20-25μm; copper alloy includes the following components by weight: nickel (Ni)≤0.2 %, iron (Fe) ≤ 0.05, lead (Pb) ≤ 0.01, antimony (Sb) ≤ 0.005, bismuth (Bi) ≤ 0.002, sum of impurities % ≤ 0.5, copper (Cu) balance.

[0040] a-1) preparing graphene monodisperse solution;

[0041] a-1-1) configure organic solvent aqueous solution, the weight of organic solvent is 19 times of graphene, organic solvent is ethanol solution, the mass percent of organic solvent in organic solvent aqueous solution is 80%;

[0042] a-1-2) Graphene is dissolved in the organic solvent aqueous solution;

[0043] a-1-3) putting the graphene organic solution prepared in step a-1-2) into an ultrasonic oscillator and stirring the solution for 2 hours;

[0044] a-2) adding copper all...

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Abstract

The invention provides a preparation method of copper matrix graphene alloy. The method comprises the following steps: preparing graphene and copper and / or copper alloy mixed powder, carrying out cold pressing, and carrying out sintering molding. The method improves an original preparation technology of the copper matrix graphene alloy, and has the advantages of production period and cost reduction, simple process operation, simple required device, high production efficiency, low preparation cost, and easy realization of large-scale industrialization.

Description

technical field [0001] The invention relates to a method for preparing an olefin alloy, in particular to a method for preparing a copper-based olefin alloy. Background technique [0002] Graphene is a new type of two-dimensional nanomaterial. Its nanosheet is a two-dimensional material with a single atomic layer thickness composed of sp2 hybridized carbon atoms. It is the thinnest and hardest nanomaterial known in the world, with a strength as high as 1.01Tpa. , is 100 times that of structural steel, but its density is 1 / 5 of that of structural steel. The thermal conductivity is as high as 5300W / m·K, which is higher than that of carbon nanotubes and diamonds. The electron mobility at room temperature exceeds 200,000cm2 / V·S, which is higher than that of carbon nanotubes or silicon crystals. The resistivity is only about 1Ω·m, which is higher than that of copper or silver. Lower, the material with the smallest resistivity in the world. [0003] Graphene is a nano-scale mater...

Claims

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Application Information

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IPC IPC(8): C22C1/10C22C1/05C22C9/00C22F1/08
Inventor 燕绍九洪起虎杨程戴圣龙
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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