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

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.