Hot Compaction of Silver Coated Aluminum Matrix Nanocomposite

Aluminum-based composite materials are among the most important materials used in light industries because of their light weight and good properties such as wear resistance and high resistance relative to weight. In this research, an aluminum composite supported by a mixture of alumina and graphene coated with silver was prepared. The chemical composition was studied using X-rays, microstructure using an electron microscope (SEM), hardness using a Vickers device, and chemical corrosion using an electrochemical cell. The X-ray confirmed all used elements. The SEM image shows an excellent distribution of the alumina-graphene ceramic and silver metal. The silver-coated aluminum/(alumina-graphene) sample achieved a hardness of 66.34 HV. The sample demonstrated high resistance to chemical corrosion, which was estimated at 0.019 mm/year. The SEM image of the corroded surface revealed that the grain boundaries were the weakest places through which the atom bonds were broken and the corrosion process occurred