Cu–Ni alloys are widely used and implemented due to their remarkable mechanical and electrochemical properties in most of the engineering applications. The reinforcement of graphene nanoplatelets (Gr) in Cu–Ni alloy can be utilized to enhance the properties of Cu–Ni alloy. In the present work, Ni as an alloying element and graphene nanoplatelets as reinforcing element were co-deposited with Cu to prepare Cu–Ni/Gr composite coatings by electro-co-deposition method. The influence of various current densities on surface morphology, composition, microstructure, crystallite size, lattice strain, microhardness, coefficient of friction and corrosion resistance of the resulting composite coatings were investigated and were presented in detail. Based on the experimental results, the coatings prepared at $$6\hbox { A dm}^{-2}$$ 6 A dm - 2 , exhibit a reduced grain size with enhanced mechanical properties and corrosion resistance.

中文翻译：

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电共沉积法合成和表征 Cu-Ni/Gr 纳米复合涂层：电流密度的影响

Cu-Ni合金由于其卓越的机械和电化学性能在大多数工程应用中被广泛使用和实施。Cu-Ni合金中石墨烯纳米片（Gr）的增强可用于增强Cu-Ni合金的性能。在目前的工作中，Ni 作为合金元素，石墨烯纳米片作为增强元素与 Cu 共沉积，通过电共沉积方法制备 Cu-Ni/Gr 复合涂层。研究并详细介绍了各种电流密度对表面形貌、成分、微观结构、微晶尺寸、晶格应变、显微硬度、摩擦系数和耐腐蚀性能的影响。根据实验结果，制备的涂层在 $$6\hbox { A dm}^{-2}$$ 6 A dm - 2 ，