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 (1-2). 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 (60ppm) of Cr has been evaluated by wieght loss method. The results show that 98% inhibition efficiency is achieved with the binary system consisting of 200 ppm ATMP and 50ppm Zn+. Potentiostatic polarisation studies show that while ATMP alone acts as anodic inhibitor, ATMP-Zn2+ combination acts as mixed inhibitor. The mechanistic aspect 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 and Fe2+- ATMP complex
Subjects:	Corrosion Science and Engineering
Divisions:	UNSPECIFIED
Depositing User:	ttbdar CECRI
Date Deposited:	21 May 2012 09:23
Last Modified:	21 May 2012 09:23
URI:	http://cecri.csircentral.net/id/eprint/2655

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