VITAMIN C AS CORROSION INHIBITOR OF 36CrMo STEEL IN HYDROCHLORIC ACID SOLUTION

Corrosion is a naturally occurring phenomenon that through chemical or electrochemical reactions changes the properties of both the metal and the environment he is in contact with. Green inhibitors have been widely used recently to control corrosion, because apart from providing good protection at low cost, they are environmental friendly. The aim of this paper is to study the role of vitamin C as corrosion inhibitor of 36CrMo steel in hydrochloric acid solution. The inhibition ability of vitamin C has been tested for different concentrations of HCl solution and inhibitor as well, at different temperatures, using the weight loss method. The results showed that the corrosion stability of 36CrMo steel increases when increasing the concentration of the vitamin C and decreases with acid concentration. The inhibition efficiency decreases with the temperature.