The homogenous dispersion of graphene in Al powders is a key challenge that limits the development of graphene-reinforced metal matrix composites with high performance. Here, uniform distribution of graphene oxide (GO) coated on flake Al powders were obtained by a simply stirring and ultrasonic treatment in the water/alcohol solution. The effect of water volume content on the formation of GO/Al composite powders was investigated. The results showed that GO adsorbed with synchronous reduction on the surface of Al powders, but when the water content was higher than 80% in the solution, Al powders were totally changed into Al(OH)₃. With optimizing the water content of 60% in the solution, reduced GO was homogenously coated onto the surface of flake Al powders. The formation mechanism can be ascribed to the balance control between the liquid/solid interaction and the hydrolysis reaction.

石墨烯在Al粉中的均匀分散是一个关键挑战，它限制了高性能石墨烯增强金属基复合材料的开发。在此，通过在水/醇溶液中简单地搅拌和超声处理，获得了涂覆在薄片状Al粉末上的氧化石墨烯（GO）的均匀分布。研究了水含量对GO / Al复合粉体形成的影响。结果表明，GO以同步还原的方式吸附在Al粉的表面，但当溶液中水含量大于80％时，Al粉被全部转变为Al（OH）_3。。通过优化溶液中60％的水含量，可以将还原的GO均匀地涂覆到片状Al粉的表面上。形成机理可以归因于液/固相互作用与水解反应之间的平衡控制。