Effect of solution treatment on Mg galvanic anodes in CaSO4 – MG(OH)2 aqueous solution

Abstract

The effect of heat treatment on the Mg anode was investigated in CaSO4-Mg(OH)2 aqueous solution. The Mg sample was solutionised at 150oC, Pure and untreated Mg anode were also studied as a reference. Eoc and Tafel corrosion rate was determined by mean of potentiostat. It was found that solution treatment was significantly affecting the performance of Mg anode where it Eoc was electronegatively increases to -1.6404VSCE and the Tafel corrosion rate reduces to 12.23 mpy.