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DOI Prefix 10.20431 |
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International Journal of Advanced Research in Chemical Science
Volume-2 Issue-9, 2015, Page No:10-20
The Effect of Solanam Xanthocarpum Leaves Extract on Corrosion Inhibition of Carbon Steel in Acidic Medium
K.Hema,A.Sirajunnisa,B.R.Venkatraman,A.Subramania
1.Department of Chemistry, Saveetha School of Engineering, Saveetha University, Chennai Tamil Nadu. India
2.Department of Chemistry, Periyar Maniammai University, Thanjavur, Tamil Nadu India
3.PG & Research Department of Chemistry Periyar E.V R. College (Autonomous) Tiruchirappalli, Tamil Nadu. India
4.Centre for Nanoscience and Technology Pondicherry University, Puducherry India
2.Department of Chemistry, Periyar Maniammai University, Thanjavur, Tamil Nadu India
3.PG & Research Department of Chemistry Periyar E.V R. College (Autonomous) Tiruchirappalli, Tamil Nadu. India
4.Centre for Nanoscience and Technology Pondicherry University, Puducherry India
Citation : K.Hema,A.Sirajunnisa,B.R.Venkatraman,A.Subramania, The Effect of Solanam Xanthocarpum Leaves Extract on Corrosion Inhibition of Carbon Steel in Acidic Medium International Journal of Advanced Research in Chemical Science. 2015;2(9):10-20.
Abstract
Solanam xanthocarpum leaves (SXL) extract was used as green corrosion inhibitor for carbon steel in 1N HCl medium using weight loss, gasometric, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) studies. Surface morphology was tested using metallurgical microscope studies. Maximum inhibition efficiency (83.2%) was obtained at the best concentration of 800 ppm of SXL extract using weight loss studies. The effect of temperature and immersion time on the corrosion inhibition of carbon steel in 1N HCl was also studied. Polarization studies revealed that the inhibition action of SXL extract was under mixed control. Adsorption of SXL extract on the surface of carbon steel was found to obey the Langmuir adsorption isotherm. The mechanism of inhibition was confirmed by kinetic and thermodynamic parameters obtained from 303K to 363K temperatures. Surface morphology using metallurgical microscope confirmed the development of a protective film on the carbon steel surface.
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