Veratraldehyde was tested as a corrosion inhibitor for mild steel in I M HCI and 0.5 M H2SO4 separately using mass loss and electrochemical studies. The inhibition efficiencies were evaluated at different concentratio...Veratraldehyde was tested as a corrosion inhibitor for mild steel in I M HCI and 0.5 M H2SO4 separately using mass loss and electrochemical studies. The inhibition efficiencies were evaluated at different concentrations of the inhibitor at different temperatures. The inhibition efficiency increased with increase in inhibitor concentration and decreased with increase in temperature in both the acid solutions. Electrochemical studies showed that the inhibitor is of mixed type with a slight predominance of anodic character. The inhibitor was more active in HCI than in H2SO4. The maximum inhibition efficiency approached at 1000 ppm in both the acid medium. The inhibitor was found to adsorb on the mild steel surface according to the Langmuir adsorption isotherm. The surface morphology of mild steel in the presence and absence of inhibitor was studied by using scanning electron microscopic （SEM） images.展开更多
文摘Veratraldehyde was tested as a corrosion inhibitor for mild steel in I M HCI and 0.5 M H2SO4 separately using mass loss and electrochemical studies. The inhibition efficiencies were evaluated at different concentrations of the inhibitor at different temperatures. The inhibition efficiency increased with increase in inhibitor concentration and decreased with increase in temperature in both the acid solutions. Electrochemical studies showed that the inhibitor is of mixed type with a slight predominance of anodic character. The inhibitor was more active in HCI than in H2SO4. The maximum inhibition efficiency approached at 1000 ppm in both the acid medium. The inhibitor was found to adsorb on the mild steel surface according to the Langmuir adsorption isotherm. The surface morphology of mild steel in the presence and absence of inhibitor was studied by using scanning electron microscopic （SEM） images.
