Comparison between Computational Modelling of Galvanic Corrosion and Experimental Investigation on Localised Corrosion Activities of Mild Steel in Thin Electrolyte Layer NaCI Solution

摘要

Early studies of continuous steel strips, steel sheet piling and also closely spaced individual, electrically isolated or electrically connected coupons in the marine tidal zone show severe corrosion losses, although the corrosion profiles were very different. There are indications that even under conditions of cathodic protection, levels of corrosion observed around the mean high tide level are slightly greater than those in the low tide to mid tide region. This research aims to analyse the performance of applying cathodic protection using sacrificial anodes, and the corresponding current and potential distributions in a thin electrolyte layer in seawater or sodium chloride solutions reminiscent of the situation in the inter-tidal zone.