Rajendran, S. and Mariajoany, R. and Apparao, B.V. and Palaniswamy, N. (2000) Synergistic Effect of Calcium Gluconate and Zn2+ on the Inhibition of Corrosion of Mild Steel in Neutral Aqueous Environment. Transactions of the SAEST, 35. 3 & 4.

PDF - Published Version
Download (2672Kb) | Preview


As an alternative to the chromate containing corrosion inhibitors for mild steel in cooling water systems, the synergistic effect ofcalcium gluconate (CG) and Zn2+ on the inhibition ofcorrosion ofmild steel in neutral aqueous environment containing 60 ppm Cl-ion, a situation commonly encow1tered in cooling water systems, has beenevaluatedbytheweight-lossmethod. Theformulationconsisting of50ppm2n2' and200ppmCGhas 92% inhibition efficiency. A suitable mechanism ofcorrosion inhibition is proposed, based on the results obtained from the uv-visible absorption spectra and FTIR spectra. The protective film is found to be fluorescent and to consist ofFe2+-gluconate complex, Zn(OH)2 and Ca(OH)2'

Item Type: Article
Uncontrolled Keywords: CorrOSIOn inhibition; calcium gluconate; fluorescence; surface analysis; synergism parameter
Subjects: Electroorganic
Depositing User: ttbdar CECRI
Date Deposited: 21 Feb 2012 07:10
Last Modified: 21 Feb 2012 07:10
URI: http://cecri.csircentral.net/id/eprint/1050

Actions (login required)

View Item View Item