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  • Chem Sci Trans., 2013, 2(1),  pp 275-281  

    DOI:10.7598/cst2013.327

    Research Article

    Corrosion Inhibition of Carbon Steel in Sea Water by Glutamic Acid Zn2+ System

  • S. GOWRI, J. SATHIYABAMA, S. RAJENDRAN Z. ROBERT KENNEDY and S. AGILA DEVI
  • PG and Research Department of Chemistry, Corrosion Research Centre, GTN Arts College,
    Dindigul - 624 005, India
    Department of Chemistry, RVS School of Engineering and Technology, Dindigul, India
    Department of Chemistry Mahendra Institute of Engineering and Technology,
    Tiruchengode- 637503, Tamilnadu, India
  • Abstract

    The inhibition efficiency of glutamic acid (GA) Zn2+ system in controlling corrosion of carbon steel in sea water has been evaluated by weight loss method. The formulation consisting of 200 ppm of glutamic acid and 25 ppm of Zn2+ has 87% inhibition efficiency (IE). A synergistic effect exists between glutamic acid and Zn2+. Polarization study reveals that the glutamic acid - Zn2+ system function as an anodic inhibitor and the formulation controls the anodic reaction predominantly. The nature of the protective film on metal surface has been analyzed by AFM analysis.

    Keywords

    Corrosion, Carbon steel, Amino acid, Glutamic acid, Electro chemical techniques.

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