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Modified graphene enhanced aluminum-based composite material and preparation method thereof

A technology for strengthening aluminum-based and composite materials, applied in the field of metal casting, can solve problems such as difficulty in uniform metal distribution, easy agglomeration of graphene, poor interface wettability, etc., to achieve wettability, good interface bonding, and comprehensive good mechanical properties

Inactive Publication Date: 2017-10-27
SUZHOU NETABHAPE COMPOSITE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Graphene is prone to agglomeration, and has poor interfacial wettability with metals, and because the density of graphene is much lower than that of metals such as aluminum and magnesium, it is easy to float in metal melts, and it is difficult to evenly distribute in metals

Method used

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  • Modified graphene enhanced aluminum-based composite material and preparation method thereof
  • Modified graphene enhanced aluminum-based composite material and preparation method thereof

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Embodiment 1

[0022] A modified graphene-reinforced aluminum-based composite material, comprising the following components, the mass fraction percent of which is: modified graphene 0.01wt.%, copper 0.3wt.%, carbon 0.2wt.%, iron 1.2wt.% , silicon carbide 0.8wt.%, lanthanum oxide 0.1wt.%, surfactant 1.9wt.%, and the balance is aluminum.

[0023] A preparation method for modified graphene-reinforced aluminum-based composite material, comprising the following steps:

[0024] (1) Graphene is added in dehydrated alcohol, m / v is 1:15, is placed in ball mill, after dispersing evenly, adds cationic surfactant, sonication 2 hours;

[0025] (2) Place the system after the ultrasonic treatment in step (1) in an oven at 40° C., remove absolute ethanol, and obtain modified graphene;

[0026] (3) Melt pure aluminum, add modified graphene when it is half melted, and keep it warm at 700°C for 30 minutes;

[0027] (4) After adding copper, carbon, iron, silicon carbide and lanthanum oxide, keep warm and stir...

Embodiment 2

[0032] A modified graphene-reinforced aluminum-based composite material, comprising the following components, the mass fraction percentages are: modified graphene 0.05wt.%, copper 0.9wt.%, carbon 0.7wt.%, iron 1.8wt.% , silicon carbide 1.0wt.%, lanthanum oxide 0.5wt.%, surfactant 2.4wt.%, and the balance is aluminum.

[0033] A preparation method for modified graphene-reinforced aluminum-based composite material, comprising the following steps:

[0034] (1) Graphene is added in dehydrated alcohol, m / v is 1:18, is placed in ball mill, after dispersing evenly, adds cationic surfactant, sonication 3 hours;

[0035] (2) Place the system after the ultrasonic treatment in step (1) in an oven at 45° C., remove absolute ethanol, and obtain modified graphene;

[0036] (3) Melt pure aluminum, add modified graphene when it is half melted, and keep it warm for 40 minutes at 710°C;

[0037] (4) After adding copper, carbon, iron, silicon carbide and lanthanum oxide, keep warm and stir eve...

Embodiment 3

[0042] A modified graphene-reinforced aluminum-based composite material, comprising the following components, the mass fraction percent of which is: modified graphene 0.1wt.%, copper 1.4wt.%, carbon 1.1wt.%, iron 2.9wt.% , silicon carbide 1.2wt.%, lanthanum oxide 1.2wt.%, surfactant 3.2wt.%, and the balance is aluminum.

[0043] A preparation method for modified graphene-reinforced aluminum-based composite material, comprising the following steps:

[0044] (1) Graphene is added in dehydrated alcohol, m / v is 1:21, is placed in ball mill, after dispersing evenly, adds cationic surfactant, sonication 3 hours;

[0045] (2) Place the system after the ultrasonic treatment in step (1) in an oven at 50° C., remove absolute ethanol, and obtain modified graphene;

[0046] (3) Melt pure aluminum, add modified graphene when it is half melted, and keep it warm for 55 minutes at 725°C;

[0047] (4) After adding copper, carbon, iron, silicon carbide and lanthanum oxide, keep warm and stir ...

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Abstract

The invention discloses a modified graphene enhanced aluminum-based composite material and a preparation method thereof. The modified graphene enhanced aluminum-based composite material comprises the following components in percentage by weight: 0.01 to 0.3 percent of modified graphene, 0.3 to 2.4 percent of copper, 0.2 to 1.3 percent of carbon, 1.2 to 4.6 percent of iron, 0.8 to 1.9 percent of silicon carbide, 0.1 to 1.5 percent of lanthanum oxide, 1.9 to 4.5 percent of a surfactant and the balance of aluminum. The modified graphene enhanced aluminum-based composite material provided by the invention has high comprehensive mechanical property, and the strength and the hardness are improved; the composite material maintains the original plasticity of the aluminum-based composite material; by using the method, the wettability of the graphene and a metal melt is guaranteed, compact structure and good interfacial bonding force of the composite material are guaranteed, and the graphene is distributed into the aluminum base uniformly in a sheet shape.

Description

technical field [0001] The invention belongs to the field of metal casting, and relates to an aluminum alloy and a casting method thereof, in particular to a modified graphene-reinforced aluminum matrix composite material and a preparation method thereof. Background technique [0002] Light metal matrix composite material is an excellent structure-functional integration material with high specific strength, high specific stiffness and high specific modulus, such as aluminum-based and magnesium-based composite materials, which have become the military and civilian industries such as automobiles, electronics, aviation, and ocean. ideal material for the field. Different from the traditional particle or fiber reinforcement phase, the two-dimensional structure of graphene, because of its ultra-high strength, modulus and other physical properties, as a reinforcement phase of composite materials, can play a synergistic role with the matrix to prepare high-performance composite mate...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/10C22C1/06C22C1/02C22F1/04
CPCC22C1/06C22C1/1036C22C21/00C22F1/04C22C1/1047
Inventor 刘莉王爽邱晶刘晓东黄明明
Owner SUZHOU NETABHAPE COMPOSITE MATERIALS
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