Ceramic composites, especially nano-metal oxides, have proven to be promising materials for various technical applications due to their excellent surface properties. In this study, the Zn–Cu–Ni oxide nanocomposites were successfully synthesized by the co-precipitation method in four different compositions (NiO in percentages of 0, 10, 20 and 30%). The products were coated on stainless steel 316LC (SS316LC) by electrophoretic deposition (EPD) at 70, 80, 90 and 100 V for in 4–10 min. FTIR, XRD, optical microscopy, FESEM, wear and corrosion (polarization and EIS) analyzes were used to investigate the products. The coating parameters played an important role in determining the surface properties of the coatings on SS316LC. Longer coating time and lower voltage resulted in smoother coatings with improved corrosion resistance. The highest corrosion resistance was at 80 V-6 min. These results underlined the potential of ceramic nanocomposite coatings of Zn–Cu–Ni oxide to improve the surface properties of steel in technical applications.