Abstract
Graphene (Gr) has proved its significant role as a reinforcement material in improving the strength of metal matrix composites due to its excellent mechanical properties. In this paper, Gr/Cu composite film with a layered structure was prepared by layering electrodeposition. The directional distribution of Gr in the Cu film was insured by this method, which gives play to its ultra-high-strength in a two-dimensional plane. In the meantime, the effect of electrodeposition time on the distribution structure of the Gr layer was studied. The structure analysis and mechanical properties test show that the strength of the layered Gr/Cu composite film is greatly improved compared to the pure Cu film. Furthermore, the strength of the composite film increases at the beginning and then decreases with the electrodeposition time of the Gr layer increasing, while the coverage and the degree for the layer stacking of Gr gradually increase in this process. In conclusion, the influence of different Gr distributions on the mechanical properties of the composite film has been studied by combining the experimental results with molecular dynamics simulation, which lays an effective foundation for further optimizing the structure of Gr in the layered composite film and improving the mechanical properties.
Highlights
Graphene (Gr), as an sp2 hybridized two-dimensional material discovered in recent years [1], has attracted extensive attention due to its excellent thermal, electrical, and mechanical properties
By changing the electrodeposition time of the Gr layer, the structure distribution of Gr and the change of the mechanical properties of composite materials were studied, and the mechanism of the influence of Gr distribution on the mechanical properties was deeply explored in combination with molecular dynamics simulation
The tensile performance measurement shows that the tensile strength of the composite film was greatly improved compared to the pure Cu film
Summary
Graphene (Gr), as an sp hybridized two-dimensional material discovered in recent years [1], has attracted extensive attention due to its excellent thermal, electrical, and mechanical properties. As an anisotropic two-dimensional material, the directional distribution of Gr along the plane tensile direction can play its reinforcing effect more effectively, which is difficult to achieve by electrochemical co-deposition and powder metallurgy. The result confirmed the ultra-high enhancement effect of Gr when distributed along the plane This preparation process is more complex and difficult to apply. We proposed a simple and convenient layer-by-layer electrodeposition process that can prepare high-strength Gr/Cu composite film with a layered structure to achieve the directional distribution of Gr. By changing the electrodeposition time of the Gr layer, the structure distribution of Gr and the change of the mechanical properties of composite materials were studied, and the mechanism of the influence of Gr distribution on the mechanical properties was deeply explored in combination with molecular dynamics simulation
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