电沉积法制备超顺排碳纳米管增强铜基层状复合材料

摘要

A new kind of laminar metal matrix nanocomposite (MMC) was fabricated by an electrodeposition process with copper and superaligned carbon nanotubes film (SACNT film). The SACNT film was put on a titanium plate and then a layer of copper was electrodeposited on it. By repeating the above process, the laminar Cu/SACNT composite which contains dozens or hundreds of layers of copper and SACNT films was obtained. The thickness of a single copper layer was controlled by adjusting the process parameter easily and the thinnest layer is less than 2μm. The microscopic observation shows that the directional alignment structure of SACNT is retained in the composite perfectly. The mechanical and electrical properties testing results show that the tensile and yield strengths of composites are improved obviously compared with those of pure copper, and the high conductivity is retained. This technology is a potential method to make applicable MMC which characterizes high volume fraction and directional alignment of carbon nanotubes.%采用电沉积法,使用纯铜和超顺排碳纳米管薄膜(SACNT)制备新型金属基复合材料.将SACNT铺放在钛板上,然后在其表面电沉积一层纯铜.通过不断重复铺膜和电沉积的过程,可以得到含有几十层到上百层碳纳米管薄膜的铜基层状复合材料.通过调整电沉积参数可以控制电沉积的每一层纯铜的厚度,每一层纯铜的厚度可以小于2μm.通过显微组织分析发现,SACNT的超顺排特性在复合材料中得到保留.力学性能和电学性能测试结果表明:相比于纯铜材料,复合材料的抗拉强度和屈服强度均大幅提升,且导电能力没有受到明显影响.这种工艺可以大批量制备含有高体积分数和定向排布特征碳纳米管的金属基纳米复合材料,具有良好的实际应用前景.