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.

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Abstract

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
Divisions:	UNSPECIFIED
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

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