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Enhanced Wear Performance of Cu-Carbon Nanotubes Composite Coatings Prepared by Jet Electrodeposition

机译：喷射电沉积制备的Cu-碳纳米管复合涂层的耐磨性能增强

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摘要

Cu-carbon nanotubes (CNTs) composite coatings with high CNT content and uniformly distributed CNTs were successfully prepared via jet electrodeposition. Pristine CNTs, without any treatment like acid functionalization, were used. Anionic surfactant sodium dodecyl sulfate (SDS) was used to increase the wettability of the CNTs and improve the content of incorporated CNTs. With an appropriate SDS concentration (300 mg/L) in the electrolyte, the incorporated CNT content is as high as 2.84 wt %, much higher than the values reported using conventional electrodeposition (0.42–1.05 wt %). The high-content CNTs were uniformly distributed in the composite coating. The surface morphology of this composite coating (2.84 wt % CNTs) was flat due to the uniform electric field in jet electrodeposition. In the wear test a with load of 1 N and sliding speed of 0.02 m/s, the wear rate of this composite coating was 1.3 × 10−2 mg/Nm, 85.4% lower than that of pure Cu. The enhanced wear performance of Cu-CNTs composite coatings can be attributed to high CNT content and flat surface morphology.
机译：通过喷射电沉积成功地制备了具有高CNT含量和均匀分布的CNT的Cu-碳纳米管（CNT）复合涂层。使用未经任何处理（如酸官能化）的原始CNT。阴离子表面活性剂十二烷基硫酸钠（SDS）用于增加CNT的润湿性并改善掺入的CNT的含量。在电解质中具有适当的SDS浓度（300 mg / L）时，结合的CNT含量高达2.84 wt％，远高于传统电沉积所报告的值（0.42-1.05 wt％）。高含量的CNT均匀地分布在复合涂层中。由于喷射电沉积中的均匀电场，该复合涂层（2.84 wt％CNT）的表面形态是平坦的。在载荷为1 N且滑动速度为0.02 m / s的磨损试验a中，该复合涂层的磨损率为1.3×10 -2 mg / Nm，比纯涂层的磨损率低85.4％铜Cu-CNTs复合涂层耐磨性能的提高可归因于CNT含量高和表面形态平整。

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