A kind of preparation method of single-layer graphene reinforced aluminum matrix composite material

A technology of single-layer graphene and composite materials, which is applied in the field of preparation of aluminum-based composite materials, can solve the problems of difficult dispersion and high cost, and achieve high performance and cost reduction

Active Publication Date: 2018-08-28
HARBIN INST OF TECH
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Problems solved by technology

[0005] In order to solve the problems of high cost and difficult dispersion in the application of single-layer graphene in the field of aluminum-based composite materials, the present invention proposes a preparation method of single-layer graphene-reinforced aluminum-based composite materials

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  • A kind of preparation method of single-layer graphene reinforced aluminum matrix composite material

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specific Embodiment approach 1

[0041] Specific embodiment one: present embodiment a kind of preparation method of single-layer graphene reinforced aluminum matrix composite material, this method is carried out according to the following steps:

[0042] 1. Weighing

[0043] Take by weighing 0.5%~4% multilayer graphene microchip and 96%~99.5% aluminum metal powder by mass fraction, take industrial pure aluminum block; The weight ratio of described industrial pure aluminum block and aluminum metal powder is ( 3~10): 1;

[0044] 2. Dispersion of multilayer graphene microflakes and prefabricated block formation

[0045] Put the multilayer graphene microflakes and aluminum metal powder weighed in step 1 into a ball mill tank, ball mill the obtained mixed powder at a speed of 100-400rpm for 4-15 hours, and put the mixed powder obtained after ball milling into a cold-press mold Carry out cold pressing to obtain multilayer graphene microchip / aluminum prefabricated body;

[0046] The specific steps of cold pressin...

specific Embodiment approach 2

[0064] Embodiment 2: This embodiment differs from Embodiment 1 in that: the average diameter of the multilayer graphene microflakes in Step 1 is 100 nm to 10 μm, and the average thickness is 6 to 50 nm. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0065] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the average particle size of the aluminum metal powder in Step 1 is 1-30 μm. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a method for preparing a single-layer graphene-reinforced aluminum-based composite material, relating to a method for preparing an aluminum-based composite material. The present invention aims to solve the problems of high cost and difficulty in dispersion existing in the application of single-layer graphene in the field of aluminum-based composite materials. Preparation method: 1. Weigh the multilayer graphene micro-sheet aluminum metal powder, and weigh the industrial pure aluminum block; the weight ratio of the industrial pure aluminum block to the aluminum metal powder is (3-10): 1; 2. Multi-layer graphene microchip dispersion and prefabricated block forming; 3. Aluminum metal impregnation; 4. Large plastic deformation treatment; 5. High temperature fusion treatment; 6. Repeated plastic deformation and high temperature fusion treatment. The invention uses low-priced multilayer graphene microchips as reinforcement raw materials, so the cost is relatively low, and the content of single-layer graphene in the obtained composite material can reach up to 4wt.%. The invention is suitable for preparing single-layer graphene-reinforced aluminum-based composite materials.

Description

Technical field: [0001] The invention relates to a preparation method of an aluminum-based composite material. Background technique: [0002] Graphene has a tensile strength as high as 125GPa, an elastic modulus of 1TPa, and a thermal conductivity of 5000W / (m K), which is undoubtedly a nearly ideal reinforcement with superior comprehensive performance. According to the number of layers, graphene can be divided into single-layer graphene, double-layer graphene, few-layer graphene (3-10 layers) and multi-layer graphene (the number of layers is more than 10 layers, and the total thickness is less than 10nm). At present, the research on using graphene to improve the performance of resins and ceramics is the most active, while the research on using graphene to strengthen metal matrix, especially aluminum matrix composites is relatively less. The preparation methods are mainly solid-phase method and liquid-phase method. The solid-phase method includes various powder metallurgy me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C21/00C22F1/04
CPCC22C1/1015C22C1/1036C22C21/00C22F1/04C22C1/1073
Inventor 武高辉杨文澍张强修子扬姜龙涛陈国钦乔菁康鹏超芶华松
Owner HARBIN INST OF TECH
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