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ISSN 2063-5346
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ROLE OF Zn 2+ IN ENHANCING THE INHIBITION EFFICIENCY OF TRISODIUM CITRATE

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N.Vijaya, A. Peter Pascal Regis, S. Rajendran , M. Pandiarajan , and R. Nagalakshmi
» doi: 10.17628/ECB.2013.2.275

Abstract

The inhibition efficiency (IE) of trisodium citrate (TSC)-Zn2+ system in controlling corrosion of mild steel in well water has been evaluated by weight loss method. A synergistic effect exists between TSC and Zn2+. The formulation consisting of 50 ppm of TSC and 25 ppm of Zn2+ provides 87% of IE. FTIR spectra reveal that the protective film consists of Fe2+ -TSC complex and Zn(OH)2. Polarization of study confirms the formation of a protective film on the metal surface .The inhibitor system controls the cathodic reaction predominantly

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