Abstract

Mild steel surface was chemically treated by Neodymium (Nd) oxide nanofilm to effectively reduce the cathodic delamination arte and increase the adhesion and corrosion prevention properties of fusion-bonded epoxy (FBE). It was observed that the Nd film uniformly covered the steel surface and improved the surface free energy, roughness and work of adhesion. Results revealed that applying Nd layer excellently promoted the interfacial metal/FBE adhesion (dry/wet), decreased the cathodic delamination rate and enhanced the FBE coating protection function. Furthermore, theoretical simulations revealed the stronger adsorption of coating molecules on the neodymium oxide as compared with the iron oxides.

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