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Vol. 30 No. 9 (2018): Vol 30 Issue 9

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Mitigation of Acid Corrosion on Carbon Steel by Naturally Occurring Gum Exudate

https://doi.org/10.14233/ajchem.2018.21333
Malarvizhi Manickam
Department of Chemistry, Sri GVG Visalakshi College for Women, Udumalpet-642 128, India
Dheenadhayalan Sivakumar
Department of Chemistry, P.S.G. College of Arts and Science, Coimbatore-641 014, India
Mallika Jaganathan
Department of Chemistry, P.S.G. College of Arts and Science, Coimbatore-641 014, India

Corresponding Author(s) : Malarvizhi Manickam

malar_gvg@rediffmail.com

Asian Journal of Chemistry, Vol. 30 No. 9 (2018): Vol 30 Issue 9

Abstract

Gum exudates of Azadirachta indica (GAI) was tested as corrosion inhibitor for carbon steel in 1 N H2SO4 by means of different techniques viz., gravimetric experiments, electrochemical polarization and impedance studies, IR and SEM techniques. Nature of adsorption is reported and it follows Langmuir isotherm. Polarization method indicated mixed mode behaviour of the inhibitor. AC impedance studies supported mitigation effects of gum exudates of Azadirachta indica. IR and SEM studies reveal the protection of carbon steel through adsorption.

Keywords

Azadirachta indica gum Corrosion inhibitor Electrochemical studies Chemisorption SEM
Manickam, M., Sivakumar, D., & Jaganathan, M. (2018). Mitigation of Acid Corrosion on Carbon Steel by Naturally Occurring Gum Exudate. Asian Journal of Chemistry, 30(9), 1953–1960. https://doi.org/10.14233/ajchem.2018.21333
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