IJNCSE - VOLUME - 1

INTERNATIONAL JOURNAL OF NANO CORROSION SCIENCE ENGINEERING

VOLUME - 1

ISSUE : 1

ISSN : 2395 – 7018


Research Article

TITLE :

Inhibition Of Corrosion Of Carbon Steel In Aqueous Solution Containing Low Chloride Ion By

Glycine – Zn2+ System

AUTHORS

J. Angelin Thangakani[a]*, S. Rajendran [b] and J. Sathiabama [c]
R.M.Joany [d], R.Joseph Rathis [e], S.Santhana Prabha [e]

[a] C.E.O.A. Mat. Hr. Sec. School, Madurai – 625 017, Tamil Nadu, India
[b] Department of Chemistry, RVS School of Engineering and Technology, Dindigul – 624 005 Tamil Nadu, India, Email:susairajendran@gmail.com.

[c] Corrosion Research Centre, Department of Chemistry, GTN Arts College, Dindigul – 624 005, Tamil Nadu, India.
[d] Department of ECE, Sathyabama University, Chennai, India.
[e] PSNA College of Engg and Technology, Dindigul, India.

ABSTRACT

The environmental friendly inhibitor system glycine-Zn2+, has been investigated by weight loss method. A synergistic effect exists between glycine and Zn2+ system. The formulation consisting of 200ppm of glycine and 50 ppm of Zn2+ offers good inhibition efficiency of 86%. Polarization study reveals that this formulation functions as anodic inhibitor. AC impedance spectra reveal that a protective film is formed on the metal surface. The FTIRspectral study leads to the conclusion that the Fe2+- glycine complex formed on anodic sites of the metal surface controlled the anodic reaction and Zn(OH)2 formed on the cathodic sites of the metal surface controlling the cathodic reaction. A suitable mechanism of corrosion inhibition is proposed based on the results obtained from weight loss study and surface analysis technique.

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