Biofilm formation and corrosion resistance of Ni/SiC nanocomposite layers

Abstract

Abstract Pure Ni and Ni/SiC nanocomposite layers were prepared by means of direct current electrodeposition in a sulfate–chloride nickel plating bath. The surface characteristics and properties of Ni/SiC nanocomposite layers and pure nickel coatings were comparatively investigated. The surface morphology, microstructure, topography, roughness and corrosion were characterized using scanning electron microscopy with energy dispersive X-ray spectroscopy, transmission electron microscopy, atomic force microscopy, epifluorescence microscopy and electrochemical methods. The results show that the electro-co-deposition of nano-SiC (20 nm) into a nickel matrix can significantly affect the morphology, microstructure and surface properties of Ni/SiC nanocomposite coatings. Ni/SiC nanocomposite coatings are of great interest for improving electrochemical corrosion resistance as well as resistance to bacteria attachment.