Rajendran, S. and Apparao, B.V. and Palaniswamy, N. (1996) Synergistic effect of Zn2+ and ATMP in corrosion inhibition of mild steel in neutral environment. Bulletin of Electrochemistry, 12 (01). pp. 15-19. ISSN 0256-1654

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Abstract

Synergistic effect of Zn2+ and sodium salt of aminotrimethylene phosphonic acid (ATMP) in corrosion inhibition of mild steel in water containing low concentration (60 ppm) of Cl- has been evaluated by weight loss method. The results show that 98% inhibition efficiency is achieved with the binary system consisting of 200 ppm ATMP and 50 ppm Zn2+. Potentiostatic polarization studies show that while ATMP alone acts as anodic inhibitor, ATMP-Zn2+ combination acts as mixed inhibitor. The mechanistic aspects of corrosion inhibition and the nature of the film formed on the metal surface have been analysed with the help of UV-Visible reflectance spectra, FTIR spectra, luminescence spectra and XRD patterns. The protective film appears to be consisting of Fe2+ - ATMP complex and Zn(OH)2 which is also found to be luminescent

Item Type:	Article
Uncontrolled Keywords:	Synergistic effect; Corrosion inhibition; Mixed inhibitor; Luminescence; Fe2+ -ATMP complex
Subjects:	Corrosion Science and Engineering
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	04 Dec 2012 13:57
Last Modified:	04 Dec 2012 13:57
URI:	http://cecri.csircentral.net/id/eprint/2949

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