Narrow Results

In this paper, the Ni–Fe–P–TiO₂ coatings with different TiO₂ sol addition have been prepared by a sol-enhanced electroplating process. The microstructures and elemental compositions of prepared coatings were systematically characterized. The coating performance including mechanical properties and corrosion resistance were investigated. The results show that the proper addition of 10 mL/L TiO₂ sol slightly refines the surface morphology, while a much higher 50 mL/L TiO₂ sol addition causes a relatively nonuniform surface. The much-improved mechanical and corrosion performance is achieved by adding 10 mL/L TiO₂ sol, due to the strengthening effect by the well-dispersed nanoparticles and the compact, uniform surface structure. The wear tests confirm that abrasive wear dominates in the sample modified by 10 mL/L TiO₂ sol, while adhesion is the primary type for other samples.