Comparison of the Corrosion Resistance of Commercial coated steel and hot-dip Zn Coatings under Changing Environmental Conditions

摘要

This work reports the results of the corrosion behaviour for materials typically applied for thefabrication of mounting assemblies of photovoltaic (PV) power plants. Here, the corrosioncharacteristics of commercially available hot-dip Zn-coated steel sheets was compared with that ofMagnelis? type steel coating. Electrochemical experiments involved comparative assessment of theircorrosion properties by utilizing linear polarization and impedance spectroscopy techniques, under thevariable concentration of Na 2 SO 4 supporting solution, pH and dissolved oxygen content conditions.Surface and cross-sectional morphology, and elemental composition evaluations of metal-coatedelectrodes were performed by using SEM and EDX spectroscopy techniques.