Self Assembling monolayers of nanofilms by oxalic acid

International Journal of Applied Chemistry

© 2017 by SSRG - IJAC Journal

Volume 4 Issue 2

Year of Publication : 2017

Authors : P.Satyabama, P.DesiyaKiruban, S.Rajendran

10.14445/23939133/IJAC-V4I3P102

How to Cite?

P.Satyabama, P.DesiyaKiruban, S.Rajendran, "Self Assembling monolayers of nanofilms by oxalic acid," SSRG International Journal of Applied Chemistry, vol. 4,  no. 2, pp. 1-5, 2017. Crossref, https://doi.org/10.14445/23939133/IJAC-V4I3P102

Abstract:

The inhibition efficiency of oxalic acid in controlling corrosion of Aluminium in an aqueous solution at pH 10, in the absence and presence of Zn2+ has been evaluated by weight loss method. The formulation consisting of 250 ppm of oxalic acid and 50 ppm of Zn2+ has 95% corrosion inhibition efficiency. A synergistic effect exits between oxalic acid and Zn2+. The mechanistic aspects of corrosion inhibition have been evaluated by polarization study and AC impedance spectra. In the presence of inhibitor, linear polarization resistance increases;corrosion current decreases; charge transfer resistance value increases; impedance value increases and double large capacitance decreases . The protective film has been analyzed by UV and Flouresence spectra.

Keywords:

Corrosion inhibition, Aluminium at pH10, oxalic acid, synergistic effect.

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