Enhanced compressive strength of graphene strengthened copper (G/Cu) composites

IF 3.1 Q2 MATERIALS SCIENCE, COMPOSITES

Functional Composites and Structures Pub Date : 2024-08-14 DOI:10.1088/2631-6331/ad6954

Deniz Cakir, Omer R Caylan, Erhan Gurpinar, Ogulcan Akgul, H Onat Tugrul, Elif Okay, Eren Atli, Benat Kockar, Goknur Cambaz Buke

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Abstract

This study explores the compressive mechanical properties of copper composites reinforced with graphene. Graphene was synthesized on copper powders via plasma-enhanced chemical vapor deposition. Multilayer graphene formation has been substantiated by Raman analysis. Graphene-coated copper (G/Cu) powders were then subjected to pressing and sintering to fabricate G/Cu composites. The mechanical properties of G/Cu composites were investigated under compression from room temperature up to 400 °C in air. The results demonstrated a substantial improvement in the mechanical properties of G/Cu composites compared to monolithic copper. Specifically, the yield strength in compression of the G/Cu composite increased by 203% at room temperature and by 190% at 200 °C. At 400 °C, the yield strength enhancement exceeded 370%. Microstructural analysis suggests that the observed enhancements in G/Cu composites can be attributed to reduced porosity, smaller grain size, and inhibited dislocation motion at the increased grain boundary area (due to refined grain size) and graphene-copper interfaces.

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增强石墨烯强化铜 (G/Cu) 复合材料的抗压强度

本研究探讨了石墨烯增强铜复合材料的压缩机械性能。石墨烯是通过等离子体增强化学气相沉积法在铜粉上合成的。拉曼分析证实了多层石墨烯的形成。然后对石墨烯涂层铜（G/Cu）粉末进行压制和烧结，制成 G/Cu 复合材料。研究了 G/Cu 复合材料在空气中从室温到 400 °C 的压缩条件下的机械性能。结果表明，与单片铜相比，G/Cu 复合材料的机械性能有了大幅提高。具体来说，G/Cu 复合材料的压缩屈服强度在室温下提高了 203%，在 200 °C 时提高了 190%。在 400 °C 时，屈服强度提高了 370%。微观结构分析表明，在 G/Cu 复合材料中观察到的增强可归因于孔隙率降低、晶粒尺寸变小以及晶界面积增大（由于晶粒尺寸细化）和石墨烯-铜界面处位错运动受到抑制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Functional Composites and Structures Materials Science-Materials Science (miscellaneous)

CiteScore

4.80

自引率

10.70%

发文量