Journal :   Asian Journal of Research in Chemistry

Volume No. :   4

Issue No. :  3

Year :  2011

Pages :   402-405

ISSN Print :  0974-4169

ISSN Online :  0974-4150


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Influence of Chloride Ion on the Corrosion Inhibition Efficiency of the ATMP - Zn 2+ System



Address:   C. Thangavelu1*, P. Patric Raymond2, S. Rajendran3 and M. Sundaravadivelu4
1Periyar E. V. R. College, Trichirappalli, 620023, Tamilnadu, India
2St. Joseph’s College, Trichirappalli, 620002, Tamilnadu, India
3Servite College of Education Thogaimalai, Tamilnadu, India
4Gandhigram Rural Institute, Tamilnadu, India
*Corresponding Author
DOI No:

ABSTRACT:
Corrosion rates of carbon steel immersed in various concentrations of Cl- (100 ppm and 150 ppm) have been evaluated by weight loss method in the absence and presence of Amino (trimethylene phosphonic acid) ATMP and Zn2+. It is found that ATMP alone is corrosive at 100 ppm Cl- but at 150 ppm Cl- it shows some inhibition efficiency (IE) due to deposition of Cl- on metal surface. However interestingly, ATMP shows very good IE in the presence of Zn2+ at all concentrations of Cl-. A synergistic effect is noticed between ATMP and Zn2+. The protective film has been analysed by surface analysis techniques and a suitable mechanism of corrosion inhibition is proposed.
KEYWORDS:
Carbon steel, corrosion inhibition, chloride environment, phosphonic acid.
Cite:
C. Thangavelu, P. Patric Raymond, S. Rajendran, M. Sundaravadivelu. Influence of Chloride Ion on the Corrosion Inhibition Efficiency of the ATMP - Zn 2+ System. Asian J. Research Chem. 4(3): March 2011; Page 402-405.
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