Effects of Copper Plated Graphene Sheet Diameter on Microstructure and Properties of Aluminum Matrix Composites

Zhu Dezhi; Yang Lian; Liu Yixiong; Liu Jian; Zheng Zhenxing

doi:10.15980/j.tzzz.2022.02.001

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Effects of Copper Plated Graphene Sheet Diameter on Microstructure and Properties of Aluminum Matrix Composites
Vol. 42, Issue 2, Pages: 133-138(2022)
Published： 2022 ，
DOI： 10.15980/j.tzzz.2022.02.001

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Zhu Dezhi, Yang Lian, Liu Yixiong, et al. Effects of Copper Plated Graphene Sheet Diameter on Microstructure and Properties of Aluminum Matrix Composites. [J]. Special Casting & Nonferrous Alloys 42(2):133-138(2022)
DOI：

Zhu Dezhi, Yang Lian, Liu Yixiong, et al. Effects of Copper Plated Graphene Sheet Diameter on Microstructure and Properties of Aluminum Matrix Composites. [J]. Special Casting & Nonferrous Alloys 42(2):133-138(2022) DOI： 10.15980/j.tzzz.2022.02.001.

摘要

采用超声分散与机械搅拌相结合的方法分散石墨烯，通过放电等离子烧结制备了石墨烯增强铝基复合材料。系统分析了石墨烯片径大小对复合材料组织与性能的影响。结果表明，镀铜石墨烯表面的铜部分向铝基体中扩散，加强了石墨烯与铝的界面结合，片径较大的石墨烯与铝基体的界面结合更好；两种不同片径的石墨烯对复合材料抗拉强度的增强效果相当，而片径较大的石墨烯更有利于实现强度与塑性的平衡。另外，片径较大的石墨烯对复合材料电导率的增强效果更好，但两种不同片径的石墨烯对复合材料热导率的增强效果不明显。整体上片径较大的石墨烯对复合材料的综合性能的增强效果更好。

Abstract

Through dispersing graphene by ultrasonic dispersion and mechanical stirring

graphene reinforced aluminum matrix composites were prepared by spark plasma sintering. Effects of graphene sheet diameter on the microstructure and properties of the aluminum matrix composites were analyzed. The results indicate that the copper particles on the surface of copper plated graphene are diffused into the aluminum matrix

strengthening the interface bonding between graphene and aluminum

leading to the better bonding between graphene with larger sheet diameter and aluminum matrix. The tensile strength of the composites reinforced by graphene with different sheet diameters is similar

and graphene with larger sheet diameter is contributed to achieving the better balance of strength and plasticity

which however

has better enhancement effect on the conductivity of the composite

while graphene with two different sheet diameters has no obvious enhancement effect on the thermal conductivity of the composite. Graphene with larger sheet diameter has better effect on the comprehensive properties of the aluminum matrix composites.