Rajendran, S. and Apparao, B.V. and Palaniswamy, N. (2000) Influence of a cationic surfactant on the inhibition efficiency of calcium gluconate – Zn2+ system. Anti-Corrosion Methods and Materials , 47 (01). pp. 11-14. ISSN 0003-5599

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Abstract

The influence of a cationic surfactant, N-cetyl-N, N,N-trimethyl ammonium bromide (CTAB) on the inhibition efficiency (IE) of calcium gluconate (CG) – Zn2+ system in controlling corrosion of mild steel in a neutral aqueous environment containing 60ppm Cl- has been evaluated by weight-loss method. The formulation consisting of 200ppm CG and 50ppm Zn2+ has 86 percent IE (immersion period = three days). Addition of various concentrations of CTAB to the above system improves the IE to 99 percent. Presence of CTAB facilitates the transport of CG and Zn2+ from the bulk of the solution to the metal surface. The nature of the protective film formed on the surface of mild steel has been analysed by FTIR and fluorescence spectra. The protective film is found to be fluorescent and to consist of iron-CG complex, iron-CTAB complex and Zn(OH)2

Item Type:	Article
Uncontrolled Keywords:	Steel; Corrosion inhibitors; Surfactants
Subjects:	Corrosion Science and Engineering
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	18 Dec 2012 06:15
Last Modified:	18 Dec 2012 06:15
URI:	http://cecri.csircentral.net/id/eprint/2983

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