MICROSTRUCTURE AND PROPERTIES OF CARBON SOL-REINFORCED Ni–P/C FILM

This research investigates the creation of a carbon sol-reinforced Ni–P/C film using composite electrodeposition techniques. The surface microstructure of the films was analyzed, and the hardness, wear resistance, and corrosion resistance were evaluated at varying carbon-sol concentrations. The results show that films with a carbon sol concentration of 15[Formula: see text]mL/L possess a consistent and compact convex shape, superior mechanical properties, and improved corrosion resistance. The hardness of the Ni–P/C films increased by 7% compared to that of the Ni–P coating, while the improvement in wear resistance was more substantial. However, when the carbon sol concentration exceeds 15[Formula: see text]mL/L, the performance of the Ni–P/C films declines. The decline can be attributed to the excessive inclusion of carbon sol, which leads to carbon particle accumulation, the formation of pores and cracks, and a subsequent decrease in coating performance.