ISSN   1004-0595

CN  62-1095/O4

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洪红, 陈苏琳, 陈茜, 张执南, 沈彬. 基于电泳法的石墨烯涂层制备与摩擦学性能研究[J]. 摩擦学学报, 2018, 38(4): 391-400. DOI: 10.16078/j.tribology.2018.04.003
引用本文: 洪红, 陈苏琳, 陈茜, 张执南, 沈彬. 基于电泳法的石墨烯涂层制备与摩擦学性能研究[J]. 摩擦学学报, 2018, 38(4): 391-400. DOI: 10.16078/j.tribology.2018.04.003
HONG Hong, CHEN Sulin, CHEN Xi, ZHANG Zhinan, SHEN Bin. Friction Properties of Graphene Coating Prepared by Electrophoretic Deposition[J]. TRIBOLOGY, 2018, 38(4): 391-400. DOI: 10.16078/j.tribology.2018.04.003
Citation: HONG Hong, CHEN Sulin, CHEN Xi, ZHANG Zhinan, SHEN Bin. Friction Properties of Graphene Coating Prepared by Electrophoretic Deposition[J]. TRIBOLOGY, 2018, 38(4): 391-400. DOI: 10.16078/j.tribology.2018.04.003

基于电泳法的石墨烯涂层制备与摩擦学性能研究

Friction Properties of Graphene Coating Prepared by Electrophoretic Deposition

  • 摘要: 采用电泳沉积方法在硅基体上制备石墨烯涂层,研究了不同电压对石墨烯涂层表面形貌、微观结构与摩擦学性能的影响,并在往复式球盘摩擦磨损试验机上研究了石墨烯涂层在不同载荷(1~9 N)下的摩擦学性能,采用扫描电子显微镜、能谱仪、光学显微镜、拉曼光谱仪和X射线光电子能谱仪分析石墨烯涂层的表面形貌、结构特征、磨损表面形貌及石墨烯结构成分的变化. 结果表明:石墨烯涂层可将硅基体的表面摩擦系数从0.6降至0.1;在低压(15~60 V)条件下电泳制备的石墨烯涂层具有更加致密的微观结构,表面承载能力强,减摩性能优异. 本研究中揭示了基于电泳法制备的石墨烯涂层作为固体润滑涂层应用的可行性.

     

    Abstract: The present study reports the significantly enhanced tribological performance of the silicon wafer by utilizing the graphene coating on its surface as a solid lubricant. Graphene coatings with different surface morphologies and microstructures were deposited by electrophoretic deposition (EPD) method by adopting different applied voltages, and then their friction reducing effect as the solid lubricant was investigated in a set of ball-on-plate reciprocating friction tests (1~9 N). Moreover, the surface morphology, microstructure and composition of graphene coating were examined by scanning electron microscope, energy dispersive spectrometer, optical microscope, Raman and X-ray photoelectron spectroscopy. The results show that the coefficients of friction of graphene coated silicon wafer arrived at a steady-state around 0.1, reduced by over 80% compared with that of the bare silicon, which was about 0.6. Compared with increasing the EPD voltage, elongating the deposition duration at low voltages (15~60 V) in the EPD process, which produced graphene coatings with more compact microstructure, proved to be an effective approach to enhance the load-bearing capacity of the graphene coating as a solid lubricant.

     

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