Friday, July 13, 2018

ELECTROCHEMICAL STUDY OF THE CORROSION BEHAVIOR OF MILD STEEL WITH ZINC COMPLEX OF 1-(8-hydroxy quinolin-2yl-methyl) THIOUREA AS INHIBITOR IN SODIUM CHLORIDE SOLUTION

Abstracts
The Corrosion inhibitive behavior of Zinc complex of 1-(8-hydroxy quinolin-2yl-methyl) thiourea (Zn-HTF) on mild steel immersed in an aqueous solution containing 60 ppm Cl
has been evaluated by using mass loss method. The corrosion inhibition efficiency shows 80% by 50 ppm of Zn-HTF. The corrosion inhibition was observed due to the formation of more stable and compact protective film on the mild steel surface. Polarization study and Electrochemical Impedance spectra were applied to analyze the effect of the inhibitor on the corrosion of mild steel. Fourier transform infrared & UV-Visible spectroscopy was used to characterize the surface film. Iron-inhibitor complex that totally covered the mild steel surface was identified by fluorescence spectra. The morphology of inhibited and uninhibited mild steel was analyzed by scanning electron microscope (SEM) and energy dispersive analysis of X-rays (EDAX). Zn-HTF has the ability to prevent the growth of certain microorganisms.
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