THE ACTIVATION CONTROLLED GALVANIC CORROSION OF CARBON STEEL/ZINC COUPLE IN DEAERATED STIRRED 0.2 N HCl

The effect of galvanic coupling of carbon steel to zinc (C.S./Zn) in Deaerated 0.2 N HCl was studied using the multiple zero resistance technique to measure the galvanic current (Ig) and the coupling potential (Ecop,) versus time for the coupled metals. It was found that altering area ratio (AR) (Cathode/Anode) of the coupled metals and increasing temperature played an important role in increasing corrosion rate as well as changing the galvanic factor (GF), galvanic current (Ig) , and dissolution current (Id), in most of the cases.