Thermal stability and Anti-Corrosion analysis of alloy coatings on Overhead Ground Wires

Abstract

Abstract. In this work, alloy coatings with different Al and Mg content have been prepared on overhead ground wires for Zn-Al-Mg series hot-dip coatings providing good protection on mild steel surface against corrosion. A reinforced thermal stability is confirmed by DSC thermodynamic curves. Furthermore, the enhanced corrosion resistance is also observed by salt spray test at 35℃ in terms of morphology, weight change. Those features have a direct synergistic effect for corrosion protection of overhead ground wires at different stages in heavy corrosion environment and attributes to the improved metallographic structures from certain ternary eutectic reaction in alloy solidification.