Investigation on the Corrosion Inhibition of Mild Steel by Expired Cenfuroxime Axetir in 1MHCl Solution

Investigation of the potential of expired cenfuroxime axetiras an inhibitor of mild steel corrosion in 1 M HCl solution was carried out using gravimetric mass loss (weight loss) and electrochemical (linear polarization) methods. The investigations were carried out at temperatures of 30 and 50 OC and concentrations ranging from 100 to 500 ppm. Results obtained revealed an increase in inhibition efficiency with increase in concentration of the inhibitor (expired cenfuroxime axetir), and decrease in inhibition efficiency with increase in temperature. Linear polarization study showed that the inhibitor is a mixed type affecting both cathodic and anodic sites of the corrosion process, which is characteristics of mixed and adsorption type inhibitors. The adsorption process obeys Langmuir adsorption isotherm.