Rajendran, S. and Apparao, B.V. and Palaniswamy, N. (1999) Influence of substituents on the inhibition efficiency of phosphonic acid – Zn2+ systems. Anti-Corrosion Methods and Materials , 46 (04). pp. 284-289. ISSN 0003-5599

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Abstract

The inhibition efficiencies of ethyl phosphonic acid (EPA) and 2-chloroethyl phosphonic acid (2-Cl EPA) in the presence of Zn2+, in controlling the corrosion of mild steel in a neutral aqueous environment containing 60ppm Cl- have been evaluated by weight-loss method and compared. It is observed that 2-Cl EPA-Zn2+ system has more inhibition efficiency than an EPA-Zn2+ system. It is due to the electron withdrawing power of the Cl atom and its size. The nature of the protective film formed on the surface of the metal has been analysed by X-ray diffraction, UV-visible reflectance and luminescence spectra

Item Type:	Article
Uncontrolled Keywords:	Acids; Corrosion inhibitors; Corrosion
Subjects:	Corrosion Protection Corrosion Science and Engineering
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	18 Dec 2012 06:30
Last Modified:	18 Dec 2012 06:30
URI:	http://cecri.csircentral.net/id/eprint/2973

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