Abstract
This research examines the influence of yttrium oxide (Y2O3) nanoparticles as reinforcing particles on the microstructure and corrosion resistance of Ni-Y2O3-MgO composite coatings deposited by pulse electrodeposition. Varying Y2O3 contents are prepared on the Q235 steel substrate using the composite electrodeposition technology. The efficacy of the coatings was evaluated using a range of analytical methods, including SEM, EDS, XRD, wear investigation, and electrochemical testing. The results demonstrate that the incorporation of Y2O3 nanoparticles has a substantial effect on refining the grains of the composite coating, thereby improving its surface flatness and density. Particularly, the coating demonstrated the highest surface quality and the smallest particle size at 10 g/L Y2O3 content which may be associated with the fact that the high surface activity and large specific area of the Y2O3 nanoparticles promote the nucleation rate and inhibit the crystal growth during the deposition process of the composite coating. The presence of Y2O3 in the coating increased the self-corrosion potential and decreased the self-corrosion current density, thereby improving its corrosion resistance. Particularly, the composite coating containing Y2O3 at a concentration of 10 g/L exhibits the most effective resistance against corrosion. Furthermore, the inclusion of Y2O3 (10 g/L) effectively decreases the wear volume of the coating while simultaneously enhancing its hardness and wear resistance. This study provides a new way for the preparation and characterization of metal-based nanocomposite coatings.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call