期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2017
卷号：8
期号：11
页码：3817-3833
出版社：University of Mohammed Premier Oujda
摘要：The use of Allicin as green corrosion inhibitor for 1018 carbon steel in 0.5 M sulfuric acid has been evaluated by using potentiodynamic polarization curves, and electrochemical impedance spectroscopy (EIS) measurements. Tests were carried out under static and dynamic conditions in a concentration range from 0 to 800 ppm. Results show that Allicin is a good mixed type of corrosion inhibitor with its efficiency increasing with an increase in its concentration up to 400 ppm and it decreased with a further increase in its concentration. Inhibitor efficiency decreases with an increase in the testing temperature, but it increases also as time elapsed or by enhancing the mass transport. Theoretical calculations have been performed by using density functional theory (DFT) in order to know the relationship between the electronic properties of Allicin and its inhibitive effect.
