The Effect of SiC Content on the Tribocorrosion Performance of SPS Produced Al-SiC Nanocomposites.

The research data includes the chronopotentiometry graph of the composites during tribocorrosion testing. The graph depicts the surface states of the composites during the interplay of wear and corrosion. From the respective images of the graphs, the galvanic coupling setups between the worn and worn areas can be deduced from the sudden shift of potentials as soon as the load was applied. After which the composites showed another shift to the more anodic region owing the role played by the reinforcement amongst others such supporting effect and increase of the hardness property of the composites. Furthermore, the SEM analysis of the wear track of the composites after tribocorrosion testing clearly shows the severe delamination and pull out of parts of the formed layer of the unreinforced aluminium matrix compared to that of the composites. On the composites, the formation of reaction products comprising of the reinforcement and the matrix led to the reduction of the coefficient of friction of the composites compared to that of the unreinforced alloy. It was also observed that the counter body used also deteriorated during the testing and led to the contamination of the wear track in all the samples tested