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 low

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

Examples

Experimental program
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Example Embodiment

[0021] Example 1

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

[0023] A method for preparing modified graphene reinforced aluminum-based composite material includes the following steps:

[0024] (1) Add graphene to absolute ethanol with m / v of 1:15, place it in a ball mill, and after the dispersion is uniform, add a cationic surfactant, and ultrasonically treat it for 2 hours;

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

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

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

Example Embodiment

[0031] Example 2

[0032] A modified graphene-reinforced aluminum-based composite material, comprising the following components, the mass percentages of which 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.%, the balance is aluminum.

[0033] A method for preparing modified graphene reinforced aluminum-based composite material includes the following steps:

[0034] (1) Add graphene to absolute ethanol with a m / v of 1:18, place it in a ball mill, and after the dispersion is uniform, add a cationic surfactant, and ultrasonically treat it for 3 hours;

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

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

[0037] (4) After adding copper, carbon, iron, silicon carbide and lanthanum oxide, ke...

Example Embodiment

[0041] Example 3

[0042] A modified graphene-reinforced aluminum-based composite material, comprising the following components, the mass percentages of which are: 0.1wt.% of modified graphene, 1.4wt.% of copper, 1.1wt.% of carbon, and 2.9wt.% of iron , Silicon carbide 1.2wt.%, Lanthanum oxide 1.2wt.%, Surfactant 3.2wt.%, the balance is aluminum.

[0043] A method for preparing modified graphene reinforced aluminum-based composite material includes the following steps:

[0044] (1) Add graphene to absolute ethanol with a m / v of 1:21, place it in a ball mill, and after the dispersion is uniform, add a cationic surfactant, and ultrasonically treat it for 3 hours;

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

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

[0047] (4) After adding copper, carbon, iron, silicon carbide and lantha...

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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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