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Preparation method of graphene/aluminum and aluminum alloy composite material

A composite material and graphene technology, applied in the field of composite materials, can solve the problems of long preparation period, graphene cannot be well dispersed, sample size and shape limitations, etc., to break through sample size and shape limitations, prevent carbon and aluminum Undesirable interfacial reaction, effect of narrow heating zone width

Active Publication Date: 2020-04-07
江苏戴克铝业科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, due to the inherent technical characteristics of powder metallurgy, the size and shape of samples prepared by traditional powder metallurgy are limited, the cost is high, the preparation cycle is long, the density of parts is low, and there are internal defects.
Due to the large specific surface area of ​​graphene, it is easy to agglomerate, the density difference between graphene and metal aluminum is very large, and the wettability of the interface between graphene and aluminum liquid is poor, so graphene cannot be well dispersed in the aluminum matrix, and it is easy to cause macro segregation; In addition, the graphene / aluminum interface reaction is difficult to control, and it is easy to form intermetallic compounds at the interface, which weakens the material performance

Method used

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  • Preparation method of graphene/aluminum and aluminum alloy composite material
  • Preparation method of graphene/aluminum and aluminum alloy composite material
  • Preparation method of graphene/aluminum and aluminum alloy composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The present embodiment provides a kind of preparation method of graphene / aluminum composite material:

[0036] Step 1. Accurately weigh the graphene powder according to the graphene mass fraction of 0.6 wt%, and ultrasonically disperse it in absolute ethanol to prepare a uniformly dispersed graphene suspension. Accurately weigh pure aluminum powder with a particle size of 30 μm, add the above-mentioned graphene suspension, and stir thoroughly at high speed to prepare a graphene / aluminum composite slurry. Then, the 0.6wt% graphene / aluminum composite powder was obtained by suction filtration and drying.

[0037] figure 1 Be the SEM figure of present embodiment graphene / aluminum composite powder, as figure 1 As shown, graphene is uniformly attached to the surface of aluminum powder.

[0038] Step 2. Place the graphene / aluminum composite powder in the quartz tube, and put a graphene / aluminum composite powder compact block with the same composition above the composite pow...

Embodiment 2

[0042] The present embodiment provides a kind of preparation method of graphene / ZL101 aluminum-silicon alloy composite material:

[0043] Step 1. Accurately weigh the graphene powder according to the graphene mass fraction of 0.01 wt%, and ultrasonically disperse it in absolute ethanol to prepare a uniformly dispersed graphene suspension. Accurately weigh ZL101 aluminum-silicon alloy powder, the particle size of ZL101 aluminum-silicon alloy powder is 230 μm, add the above graphene suspension, and stir at high speed to prepare graphene / ZL101 aluminum-silicon alloy composite slurry. Then, the 1wt% graphene / ZL101 aluminum-silicon alloy composite powder was obtained by suction filtration and drying.

[0044] Step 2. Place the graphene / ZL101 aluminum-silicon alloy composite powder in the quartz tube, and put a graphene / ZL101 aluminum-silicon alloy composite powder compact with the same composition above the composite powder as the trigger block, and vacuumize for 45 minutes. Induc...

Embodiment 3

[0048] The present embodiment provides a kind of preparation method of graphene / ZL207 aluminum-copper alloy composite material:

[0049] Step 1. Accurately weigh the graphene powder according to the graphene mass fraction of 0.7 wt%, and ultrasonically disperse it in absolute ethanol to prepare a uniformly dispersed graphene suspension. Accurately weigh the ZL207 aluminum-copper alloy powder, the particle size of the ZL207 aluminum-copper alloy powder is 120 μm, add the above graphene suspension, and stir at a high speed to prepare the graphene / ZL207 aluminum-copper alloy composite slurry. Then, the 0.7wt% graphene / ZL207 aluminum-copper alloy composite powder was obtained by suction filtration and drying.

[0050] Step 2. Place the graphene / ZL207 aluminum-copper alloy composite powder in the quartz tube, and put a graphene / ZL207 aluminum-copper alloy composite powder compact with the same composition above the composite powder as the trigger block, and vacuumize for 45 minutes...

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Abstract

The invention discloses a preparation method of a graphene / aluminum and aluminum alloy composite material. The preparation method comprises the following steps: 1, mixing graphene with an aluminum matrix to prepare graphene / aluminum-based composite powders; and 2, filling the graphene / aluminum-based composite powders into a closed container, and carrying out induction zone melting to obtain the graphene / aluminum-based composite material. According to the preparation method, the size and shape limitations are broken through, the agglomeration of graphene is inhibited, the adverse interface reaction between carbon and aluminum is prevented, the graphene nanosheets are successfully and uniformly added into the aluminum and aluminum alloy matrix, the graphene content is increased, and the graphene / aluminum and aluminum alloy composite material with different components is prepared.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a preparation method of graphene / aluminum and aluminum alloy composite materials. Background technique [0002] Aluminum matrix composites have excellent properties such as small mass, high specific strength and corrosion resistance, and are widely used in construction, ships, automobiles, aerospace, national defense and civil life and other fields. Aluminum and aluminum alloys are widely used as matrix materials because of their excellent properties. The unique two-dimensional structure and excellent physical and chemical properties of graphene make it an ideal composite material reinforcement. Graphene-enhanced aluminum and aluminum alloy-based composites are expected to have greater improvements in mechanical and physical properties. [0003] At present, there are research reports on graphene-reinforced aluminum-based composite materials to prepare graphene-rei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C1/10C22C1/03C22C21/00
CPCC22C1/1036C22C21/00C22C1/1047
Inventor 徐宇清缪红汪涛黄卫星
Owner 江苏戴克铝业科技有限公司