揭示三维连续网络石墨烯增强铜基复合材料的协同变形机制

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials Pub Date : 2024-11-19 DOI:10.1016/j.diamond.2024.111804

Yicheng Jiang , Jinshuo Pang , Xiang Zhang , Dongdong Zhao , Naiqin Zhao , Chunnian He , Enzuo Liu

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引用次数: 0

摘要

三维连续石墨烯增强铜基复合材料（3D-Gr/Cu）因其特殊的构型和增强机制而具有优异的力学性能。为了弄清三维石墨烯增强铜基复合材料的变形机理，本文构建了具有不同石墨烯网络（GN）构型和缺陷浓度的三维石墨烯增强铜基复合材料原子模型，并通过分子动力学模拟对其进行了研究。研究了拉伸过程中原子结构的演变，并对 3D-Gr/Cu、GN 和 Cu 模型的力学性能进行了研究。由此揭示了三维-Gr/Cu 中 GN 和 Cu 之间的协同变形，GN 和 Cu 之间的变形协调受 GN 结构和 Gr/Cu 界面的调节。此外，石墨烯中适当浓度的本征缺陷有助于构建三维石墨烯，改善石墨烯与铜界面的结合，从而增强石墨烯与铜之间的形变协调。这些结果为三维石墨烯和铜的形变机制提供了深刻的解释，也为三维石墨烯和铜的缺陷工程提供了新的基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Unveiling the synergistic deformation mechanism in three-dimensional continuous network graphene-reinforced copper matrix composites

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Unveiling the synergistic deformation mechanism in three-dimensional continuous network graphene-reinforced copper matrix composites

Three-dimensional continuous graphene-reinforced copper matrix composites (3D-Gr/Cu) have excellent mechanical properties due to their special configuration and strengthening mechanisms. To figure out the deformation mechanism of 3D-Gr/Cu, atomic models of 3D-Gr/Cu with different configuration of graphene network (GN) and concentration of defects are constructed and studied by molecular dynamic simulations in this work. Atomic structure evolution during stretching process is investigated, and the mechanical properties of 3D-Gr/Cu, GN and Cu models are studied. Thereby, synergistic deformation between GN and Cu in 3D-Gr/Cu is revealed, and the deformation coordination between GN and Cu is regulated by GN structure and Gr/Cu interface. Furthermore, intrinsic defects in graphene with a suitable concentration help to construct the three-dimensional GN, improve the Gr/Cu interface bonding, and thus enhance the deformation coordination between GN and Cu. These results provide a profound explanation of the deformation mechanism and a new basis for defect engineering in 3D-Gr/Cu.

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来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

期刊介绍： DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.