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  • Chem Sci Trans., 2014, 3(3),  pp 1007-1012  

    DOI:10.7598/cst2014.857

    Research Article

    Effect of 5-Methylbenzotriazole on the Corrosion Inhibition of Brass in NaCl Solution

  • T. GOWRANI
  • Department of Chemistry, NGM College, Pollachi- 642 001, Tamilnadu, India
  • Abstract

    The corrosion behavior of brass in the presence of inhibitor namely 5-methyl benzotriazole (MBTA) has been investigated in 3% NaCl medium. The inhibition efficiency of MBTA was evaluated from chemical and electrochemical techniques. Experimental studies showed that MBTA reduces markedly the corrosion of brass in 3% NaCl solution and this reduction in corrosion rates enhances with increasing concentration of MBTA. Weight loss study revealed that the formulation consisting of 150 ppm of MBTA showed 71% inhibition efficiency. Polarization studies also revealed that the inhibitor act as mixed type for brass in chloride solution. The characterization of corrosion product on brass in presence of MBTA was analysed by FTIR.

    Keywords

    Brass, 5-Methylbenzotriazole, Impedance spectroscopy, Polarization studies, FTIR

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