Method for preparing cluster type aluminum-based composite material from graphene reinforced aluminum-based composite material waste

An aluminum-based composite material and a technology for composite materials, applied in the field of preparing aluminum-based composite materials, can solve the problems that graphene-enhanced aluminum-based composite materials are difficult to recycle and reuse, and achieve easy microstructure design, plasticity improvement, and stress concentration reduction. Effect

Active Publication Date: 2020-11-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem that the graphene-reinforced aluminum-based composite material has strength-toughness inversion and the graphene-reinforced aluminum-based composite material is difficult to recycle and reuse, the present invention proposes a method for preparing a cluster-type graphene-reinforced aluminum composite material

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  • Method for preparing cluster type aluminum-based composite material from graphene reinforced aluminum-based composite material waste

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specific Embodiment approach 1

[0027] Specific implementation mode 1: In this embodiment, the method for preparing a cluster-type aluminum-based composite material by using graphene-reinforced aluminum-based composite material waste is carried out in the following steps:

[0028] 1. Pretreatment of Graphene Reinforced Aluminum Matrix Composites Scrap

[0029] The graphene-reinforced aluminum matrix composite material waste is crushed, and then annealed, cleaned and dried in sequence to obtain pretreated waste particles;

[0030] The annealing process is as follows: heat preservation at 345-355°C for 3.5-4.5 hours, and then cool with the furnace;

[0031] Heat treatment before crushing makes the waste easier to process and reduces the requirements for crushing equipment. Heat treatment of the waste can also make the composition of the material homogeneous, which is beneficial to ensure the uniformity of the subsequent prepared composite material and reduce the problem of material quality degradation due to ...

specific Embodiment approach 2

[0047] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the cleaning process described in step one is: sequentially use alkali builders, surfactants and volatile reagents to carry out the graphene-reinforced aluminum-based composite material waste ultrasonic cleaning;

[0048] The alkali builder is sodium metasilicate pentahydrate, sodium hydroxide, soda ash, etc.;

[0049] The surfactant is alcohol ether phosphate, lauryl amidopropyl amine oxide, etc.;

[0050] Described volatile reagent is alcohol;

[0051] The ultrasonic power for ultrasonic cleaning is 100-500W, and the time is 10-30min.

specific Embodiment approach 3

[0052] Embodiment 3: This embodiment is different from Embodiment 1 or 2 in that: the drying process described in step 1 is: heating to 70-120°C under vacuum or nitrogen atmosphere and keeping it warm for 6-10 hours.

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Abstract

The invention discloses a method for preparing a cluster type aluminum-based composite material from graphene reinforced aluminum-based composite material waste, and relates to a method for preparingan aluminum-based composite material. The method aims to solve the problems that the strength and toughness of a graphene reinforced aluminum-based composite material are inverted, and the graphene reinforced aluminum-based composite material is difficult to recycle. The method comprises the following steps: the graphene reinforced aluminum-based composite material waste is crushed, cleaned, driedand annealed, ball-milled and then spheroidized, spheroidized composite material powder is pressed into a prefabricated body, aluminum metal liquid is added to carry out pressure infiltration, and finally hot extrusion and heat treatment are carried out. According to the method, the cluster type aluminum-based composite material is prepared from the graphene reinforced aluminum-based composite material waste, the prepared composite material is higher in density, plasticity and toughness are improved, the process difficulty of pressure infiltration is reduced, and the rate of finished productsis increased. The method is suitable for preparing the graphene reinforced aluminum-based composite material.

Description

technical field [0001] The invention relates to a method for preparing an aluminum-based composite material. Background technique [0002] Graphene has a two-dimensional crystal structure with a thickness of one atomic layer. It is the thinnest material known so far. It has excellent electrical, optical, thermal and mechanical properties, and is considered to be an ideal reinforcement for aluminum matrix composites. The tensile strength and elastic modulus of graphene reach 125GPa and 1100GPa respectively, and the electron / hole mobility at room temperature reaches 15000cm 2 ·V -1 ·s -1 , extremely high thermal conductivity, reaching 5000W·m -1 ·K -1 . At present, the application of graphene in structural materials is mostly focused on resin-based, ceramic-based composite materials, etc., while the research on metal-based composite materials started relatively late. [0003] According to literature research, the preparation process of graphene-reinforced aluminum matrix...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C21/00
CPCC22C1/1036C22C1/1015C22C21/00C22C32/0084C22C1/1047
Inventor 谢伟梅勇邢岩邵溥真张强杨文澍武高辉姜龙涛陈国钦康鹏超修子扬乔菁周畅芶华松
Owner HARBIN INST OF TECH
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