The research involved in selecting graphene as the reinforcing phase and thereby depositing graphene–Ni–P composite coatings with different graphene content on surface of AlCu₄Mg₁ aluminum alloy as plating. The influence of graphene concentration on the hardness, thickness, surface morphology, structure and composition of the composite coatings was tested and analyzed by mic hardness tester, digital eddy current thickness gauge, electrochemical workstation, scanning electron microscopy and X-ray diffraction, respectively. Results showed that when the graphene concentration in the electrolyte was 0.25 g/L, the hardness of the coatings was 590.3 HV, which was about 1.22 times higher than that of Ni–P coatings. It also showed that the addition of graphene of 0.25 g/L gave the coating the maximum thickness of 10 μm. The corrosion potential was the highest (− 669.8 mV) when the graphene concentration was 0.25 g/L, which was 93.88 mV higher than the Ni–P coating. Addition of graphene refined the grain of the coating, and the grain of the coating was compact and uniform.

该研究涉及选择石墨烯作为增强相，从而在AlCu ₄ Mg ₁表面沉积具有不同石墨烯含量的石墨烯-Ni-P复合涂层。铝合金作为电镀层。分别通过mic硬度计，数字涡流测厚仪，电化学工作站，扫描电子显微镜和X射线衍射测试和分析了石墨烯浓度对复合涂层硬度，厚度，表面形貌，结构和组成的影响。结果表明，当电解质中的石墨烯浓度为0.25 g / L时，涂层的硬度为590.3 HV，约为Ni-P涂层的1.22倍。还显示出添加0.25g / L的石墨烯使涂层的最大厚度为10μm。当石墨烯浓度为0.25 g / L时，腐蚀电位最高（-669.8 mV），比Ni-P涂层高93.88 mV。石墨烯的添加细化了涂层的颗粒，