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Method for preparing aluminum-based graphene composite material

A composite material and graphene technology, which is applied in the field of preparation of graphene/aluminum matrix composite materials, can solve the problems of difficult large-scale production and low output, and achieve the effects of low manufacturing cost, high production efficiency and avoiding denaturation

Active Publication Date: 2015-08-26
北京石墨烯技术研究院有限公司
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AI Technical Summary

Problems solved by technology

The existing graphene-reinforced metal matrix composites processes all have the problem of low output, and it is difficult to form large-scale production

Method used

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Embodiment Construction

[0019] Below in conjunction with embodiment technical solution of the present invention will be described in further detail:

[0020] The implementation steps of the preparation method of this kind of aluminum-based graphene composite material are as follows: it is characterized in that: the steps of the method are:

[0021] ⑴Preparation of graphene / aluminum alloy composite prefabricated ingot

[0022] 1.1 Mix 1 kg of graphene with alcohol solution so that graphene accounts for 5% by weight of the mixed solution, and prepare a monodispersed graphene homogeneous solution by ultrasonic oscillation;

[0023] 1.2 Add 2024 aluminum alloy powder to the graphene solution, and then put it into a ball mill tank for mechanical ball milling. The ball milling time is 20 to 40 hours. After the ball milling, put the mixed solution into a beaker and dry it in an oven to obtain graphene / Aluminum alloy composite powder, graphene accounts for 3% to 10% by weight of graphene / aluminum alloy com...

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Abstract

The invention discloses a method for preparing an aluminum-based graphene composite material. According to the method, firstly, a grapheme and aluminum alloy composite material precast ingot is prepared; then the precast ingot is added into aluminum alloy melt for re-melting, and an aluminum-based graphene composite material cast ingot is obtained through the casting technique; finally, the cast ingot is homogenized, and high-strength aluminum-based graphene composite material bars or plates are obtained through forming techniques such as hot extrusion or rolling. The method well solves the problems about compounding and homogenization of grapheme and aluminum alloy, and the doping amount of the grapheme in the composite material can be precisely adjusted; the preparation method is provided on the basis of semi-continuous casting and is simple and efficient, and large-scale industrialization is easy to achieve.

Description

technical field [0001] The invention relates to a method for preparing a composite material, in particular to a method for preparing a graphene / aluminum-based composite material. technical background [0002] Aluminum matrix composites have high specific strength and specific stiffness, good high temperature performance and wear resistance, and low thermal expansion coefficient. At present, the reinforcements of aluminum matrix composites are mainly divided into particle reinforcements and fiber reinforcements. The fiber reinforcement not only improves the strength of the aluminum matrix, but also improves its plasticity. Carbon nanotubes are an important aluminum-based fiber reinforcement, but their production costs are high, and the potential of using carbon nanotubes to further enhance the properties of aluminum alloys is decreasing. [0003] Graphene is a new type of two-dimensional nanomaterial, its strength is as high as 1.01TPa, 100 times that of structural steel, b...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C1/10C22C21/00
Inventor 洪起虎燕绍九杨程戴圣龙
Owner 北京石墨烯技术研究院有限公司
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