Bendaif H.,University Mohamed 1st University |
Melhaoui A.,University Mohamed 1st University |
El Azzouzi M.,Mohamed 1st University |
Legssyer B.,Mohamed 1st University |
And 5 more authors.
Journal of Materials and Environmental Science | Year: 2016
Currently, corrosion has become the concern of many industries, for this reason and to prevent chemical electrochemical phenomenon, many studies especially in acid were carried out in recent years. In this work, we sought to understand the influence of methanolic and dichlorometanic extracts on corrosion of mild steel in HCl medium by the electrochemical measurements: polarization curve, electrochemical impedance spectroscopy and for weight loss measures. The results showed that the efficiency of inhibition is proportional to the concentration of the inhibitor and can reach 93% in the presence of dichloromethane extract of Pancratium foetidum Pom at 1 g / l to 308K. The temperature effect on the corrosion behavior showed that the inhibition efficiency of the two extracts decreases significantly with temperature. The adsorption of different extracts on the steel surface follows the Langmuir adsorption isotherm.