Journal :   Asian Journal of Research in Chemistry

Volume No. :   11

Issue No. :  3

Year :  2018

Pages :   580-584

ISSN Print :  0974-4169

ISSN Online :  0974-4150


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Corrosion Protection of Cast Iron in Drinking Water with Harmless Ternary Inhibitor



Address:   M. Umarani1, T. Kasilingam2 and C. Thangavelu3,*
1Municipal Higher Secondary School, Karur, Tamilnadu, India.
2Department of Chemistry, Theivanai Ammal College for Women, Villupuram, Tamilnadu, India.
3Department of Chemistry, Govt. Arts College for Women, Nilakottai, Dindigul, Tamilnadu, India.
*Corresponding Author
DOI No: 10.5958/0974-4150.2018.00103.7

ABSTRACT:
The protection of corrosion of cast iron in drinking water using curry leaf extract (CLE), Zinc ions and Sodium Tartrate (ST) was investigated using classical weight-loss measurement, Tafel polarization and Nyquist impedance methods. Inhibition efficiency of above ternary inhibitor reaches maximum values at 85 %. The shape of DC polarization profile revealed the new ternary system which acts as anodic type inhibitor. AC impedance spectroscopic studies indicated the formation of a protective film onto the metal surface in the presence of inhibitors. Analyses of the protective film using scanning electron microscope and energy dispersive X-ray analysis.
KEYWORDS:
Curry leaf extract, Tafel polarization, Nyquist impedance spectroscopy, classical weight-loss techniques and SEM-EDX.
Cite:
M. Umarani, T. Kasilingam and C. Thangavelu,. Corrosion Protection of Cast Iron in Drinking Water with Harmless Ternary Inhibitor. Asian J. Research Chem. 2018; 11(3):580-584.
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