Adsorption characteristics of Croton sparsiflorus Leaves extract on corrosion of Mild steel in acidic media
No Thumbnail Available
Date
2016
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The inhibition efficiency of leaves extract of Croton sparsiflorus{CSL) on corrosion of
mild steel ini M HCI was carried out by mass loss and electrochemical techniques. To
understand the nature of the adsorption process, thermodynamic and kinetic parameters
were evaluated using temperature studies results, A maximum of 98 % inhibition efficiency
was obtained for 0.7% concentration of CSL. Influence of temperature on the corrosion
inhibitive nature of CSL was also studied. Thermodynamic parameters demonstrated that
the inhibition was due to spontaneous adsorption of inhibitor on the metal surface. The
inhibitor was found to follow Langmuir and Temkin adsorption isotherms. Electrochemical
studies confirmed that CSL acted as mixed type inhibitor. Surface analytical studies further
ascertained the inhibitive nature of the inhibitor.