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Hossam M. Yehia,Nasreen Abdelalim,I. El-Mahallawi,Tamer Abd-elmotaleb,W. Hoziefa 대한기계학회 2023 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.37 No.4
In this study, alumina and graphite in a 98 % to 2 % ratio were prepared by mechanical milling for 80 hrs, then surface coated with 2 %Ag. The motorcycle wheel aluminum swarf was melted at 800 °C then the new hybrid (Al 2 O 3 -GNs)Ag in proportions of 1, 2, and 3 wt% was added at 600 rpm for 10 min. The microstructure of the rolled samples showed a good distribution of the hybrid (Al 2 O 3 -GNs)Ag and good adhesion with the aluminum matrix. The hardness increased by adding alumina and the hybrid up to 3 %. The as-rolled 3 %(Al 2 O 3 -GNs)Ag samples gave the best mechanical properties (yield strength, tensile strength, and elongation) compared to the as-cast aluminum reinforced with alumina and hybrid. The corrosion rate was improved by reinforcing the aluminum with the hybrid (Al 2 O 3 -GNs)Ag. Due to reducing the particles size and increasing the surface area after the rolling process, a deterioration in the corrosion resistance was observed.