Abstract
The inhibition effect of eugenol oil (EO) on the corrosion of tin in 0.1 M Na2CO3 has been studied by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization technics. The effect of temperature on the corrosion behavior of tin in 0.1 M Na2CO3 with and without addition of eugenol oil was studied in the temperature range 278-308 K. This compound inhibits the corrosion of tin at low concentration. At 4g/L eugenol oil the inhibition efficiency calculated by potentiodynamic polarization and EIS techniques is 70% and 82%, respectively. The inhibition efficiency increased with increase of the inhibitor concentration and decreased with increase of medium temperature. Electrochemical impedance spectroscopy was used to investigate the mechanism of corrosion inhibition. Polarization curves reveal that EO acts as a mixed-type inhibitor in corrosive solution. The results obtained from the different corrosion evaluation techniques are in good agreement.
Highlights
The interest on the corrosion and inhibition behavoiur of tin is due to its important technological application
The inhibition effect of eugenol oil (EO) on the corrosion of tin in 0.1 M Na2CO3 has been studied by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization technics
The second anodic peak located about - 0.55 V/saturated calomel electrode (SCE) corresponds to the formation of Sn(OH )4 or SnO2 according to the following reaction: SnO + H2O + 2 OH
Summary
The interest on the corrosion and inhibition behavoiur of tin is due to its important technological application. The corrosion behavior of this metal in aqueous medium has been the subject of several investigators [1,2,3,4,5]. Other authors have shown that the inhibitive effect of some plants solution extract is due to the adsorption of molecules of phytochemicals present in the plant on the surface of the metal, which blocks the metal surface and doesn’t permit the corrosion process to take place.The encouraging results obtained by this research permit us to test more plant materials extacts. The present work was devoted to study the corrosion inhibition of tin in bicarbonnate sodium solution using a series of green inhibitors by electrochemical impedance spectroscopy and potentiodynamic techniques. The influence of the concentration and temperature was investigated
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
