铝-锰-石墨烯复合镀层的制备与性能研究

Preparation and properties of of Al-Mn-graphene composite coatings

采用AlCl_3+LiAlH_4+MnCl_2的四氢呋喃-苯有机溶剂体系,在7075铝合金基底上制备铝-锰-石墨烯复合镀层。通过正交试验设计的方法,利用极差分析法研究了石墨烯浓度、电流密度、电镀时间、搅拌速度对镀层显微硬度和摩擦系数的影响,并对石墨烯浓度影响显著的因子进行单因素优化实验,对复合镀层的显微硬度、摩擦系数、表面形貌、结构、成分进行了研究,并遴选出显微硬度和摩擦系数的最佳石墨烯浓度。

Aluminium-manganese-graphene composite coating was prepared by AlCl 3+LiAlH 4+MnCl 2 tetrahydrofuran-benzene organic solvent system on the 7075 aluminum alloy substrate.The influence of graphene concentration,current density,electroplating time,mixing speed on micro hardness and friction coefficient was studied by the orthogonal experiment design method and extremum difference analysis method.The single-factor optimization experiment was conducted by the significant factors of graphene concentration.The micro hardness,friction coefficient,surface morphology,structure and composition of the composite coating were studied and the best graphene concentration conditions of the surface hardness and friction coefficient were selected.