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Influnce of Polyvinyl Pyrolidone on Corrosion Resistance of Mild Steel Simulated Concrete Pore Solution Prepared in Well Water

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Author Affiliations

  • 1PG Department of Chemistry, Srinivasan College of Arts and Science, Perambalur-621212, INDIA
  • 2Department of Chemistry, RVS School of Engineering and Technology, Dindigul, INDIA

Res.J.chem.sci., Volume 3, Issue (9), Pages 39-44, September,18 (2013)

Abstract

The inhibition efficiency (IE) of Polyvinyl pyrolidone (PVP) in controlling corrosion of carbon steel immersed in SCPS prepared in well water in the absence and presence of Zn2+ has been evaluated by weight loss method. The formulation consisting of 50 ppm PVP and 50 ppm Zn2+ has 96 % IE. It is found that the inhibition efficiency (IE) of PVP increases by the addition of Zn2+ ion. A synergistic effect exists between PVP and Zn2+ .The mechanistic aspects of corrosion inhibition have been studied using polarization study and AC impedance spectra. The scanning electron microscopy (SEM) study confirms the protection of carbon steel surface by strong adsorption of PVP.

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