Abstract An appropriate dispersion of carbon nanotubes (CNTs) in the metal matrix is a prerequisite for their use in improving the mechanical properties of the composites. In this study, layered CNT/Cu composites were fabricated by composite electrodeposition and subsequent spark plasma sintering (SPS). The distribution of CNTs in the composite was adjusted by alternately superimposing composite films deposited under different current density. The ultimate tensile strength of the composite prepared by superposing composite films deposited under a current density of 1 A·dm−2 and 1.5 A·dm−2 reached 370 MPa while maintaining a good fracture elongation of 35.5%. The uniform distribution of CNTs in each layer obtained by composite electrodeposition ensures the high strength of the composites. At the same time, through the coordinated deformation of the layered structure, good ductility was achieved in the CNT/Cu composites. This work highlights the role of structural design and provides a feasible method for obtaining metal matrix composite with good comprehensive mechanical properties.

中文翻译：

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实现复合电沉积制备的层状碳纳米管/铜复合材料的高延展性

摘要 碳纳米管（CNTs）在金属基体中的适当分散是其用于改善复合材料机械性能的先决条件。在这项研究中，层状 CNT/Cu 复合材料是通过复合电沉积和随后的放电等离子烧结 (SPS) 制造的。通过交替叠加不同电流密度下沉积的复合薄膜来调节复合材料中碳纳米管的分布。在1 A·dm-2和1.5 A·dm-2的电流密度下叠加沉积的复合膜制备的复合材料的极限拉伸强度达到370 MPa，同时保持了35.5%的良好断裂伸长率。复合电沉积得到的各层碳纳米管分布均匀，保证了复合材料的高强度。同时，通过层状结构的协调变形，CNT/Cu 复合材料实现了良好的延展性。该工作突出了结构设计的作用，为获得具有良好综合力学性能的金属基复合材料提供了一种可行的方法。