Effect of current density on the morphology and chemical composition of Ni-Co/Ni-P-SiC coatings

This study aims to evaluate the effect of current density on the surface morphology and chemical composition of the Ni-Co/Ni-P-SiC coatings. The coatings were direct current (DC) electrodeposited on the St ۳۷ steel. The current density is varied in the range of ۱-۴ A/dm۲. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) were used to evaluate the surface morphology and constituent elements, respectively. Results showed that the increase in current density alters the morphology of the particles and the size of the grains. It also determines the weight percent of the co-deposited SiC particles. The highest amount of included particles is obtained at ۳ A/dm۲.