INVESTIGATION OF MECHANICAL PROPERTIES OF ELECTRODEPOSITED NICKEL-TITANIUM OXIDE-FUNCTIONAL GRAPHENE OXIDE COMPOSITE COATING

Abstract

In this study, the nanocomposites of Ni-TiO 2 -Functional Graphene Oxide were coated on mild steel by the method of electrodeposition.Both the TiO 2 and Functional Graphene Oxide particles exhibit enhanced mechanical properties with superior bonding properties.Nickel is appended to the synergetic combination of TiO 2 -Functional GrapheneOxide particles to achieve better corrosion and mechanical properties.The influence of particles on coating surface properties and mechanical properties is examined.Characterization of electrodeposited coatings is accomplished with X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM) and Vickers's hardness tester.Addition of TiO 2 -Functional GrapheneOxide particles to the coating improved corrosion and mechanical properties of Nickel.Surface morphological analysis at room temperature reveals the presence of granular structure with finely filled microholes and crevices.The Ni-TiO 2 -Functional Graphene Oxide (1g/l) exhibited an excellent barrier against corrosion with a 49 % reduction in corrosion rate.Minimal exfoliation of the coating material was observed without any adhesion cracks for an applied load up to 20 N.