Effect Of Mixing Speed And Solution Temperature On Cathodic Protection Current Density Of Carbon Steel Using Magnesium As Sacrificial Anode


In present work, The corrosion behavior of carbon steel in sodium chloride (NaCl)solution with different concentrations was studied .Effects of mixing speed (0 to 2220) r.p.mand the solution temperature (25, 35, 45, 55, 65)0c on cathodic protection current density werestudied, that would provide a full cathodic protection for tube metal specimen of carbon steelimmersed in 3.5% NaCl solution by sacrificial anode method using magnesium (Mg) assacrificial anode.The results show that the concentration of sodium chloride in the electrolyte is animportant factor in determining corrosion rate, 3.5 % concentration of sodium chloride givesmaximum rate of corrosion. In addition, it has been found that the cathodic protection currentdensity showed sharp increasing with mixing speed. The results have showed also that thecathodic protection current density increased with increasing the solution temperature andshifts the protection potential to high negative value.