Open Access

Inhibitive effect of Leaves Extract of Coccinia Indica on the Corrosion of Mild Steel in Hydrochloric Acid

S. Jyothi, Department of Chemistry, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore, TN, India. J. Ravichandran jrsrmvchem@gmail.com
Department of Chemistry, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore, TN, India.


J. Environ. Nanotechnol., Volume 2, No 4 (2013) pp. 21-27

https://doi.org/10.13074/jent.2013.12.132042

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Abstract

The inhibitive effect of the acid extract of Coccinia indica (CI) leaves on the corrosion of mild steel (MS) in hydrochloric acid medium was studied using weight loss and electrochemical methods. The inhibition efficiency increased with increase in concentration of the extract but decreased with rise in temperature. Furthermore, the inhibition efficiency synergistically increased on the addition of halide ions. Polarization measurement studies revealed that CI extract behaves as a mixed inhibitor. Physical adsorption mechanism is proposed from the trend in inhibition efficiency with the change in temperature and from thermodynamic parameters. It has been found that the adsorption of CI on MS complies with Langmuir and Temkin adsorption isotherms. FTIR confirmed the adsorption of CI on MS surface.

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Reference


Abdel-Rehim, S. S., Ibrahim, M. A. M., Khaled, K.  F.,  The  inhibition  of  4-(2'-amino-5'-methylphenylazo) antipyrine on corrosion of mild steel in HCl solution  Mater. Chem. Phys., 70,   268-273(2001).  

http://dx.doi.org/ 10.1016/S0254-0584(00)00462-4.

Abiola,  O.  K.,  Otaigbe,  J.  O.  E.,  Kio,  O.  J., Gossipium  hirsutum  L.  extracts as green corrosion inhibitor for aluminum  in NaOH solution   Corros. Sci., 51, 1879-1881(2009) . 

http://h t t p : / / d x . d o i . o r g / 1 0 . 1 0 1 6 / j.corsci.2009.04.016.

Bockris, J. O. M., Drazic, D.,  Despic, R., The electrode  kinetics  of  the  deposition and dissolution of iron,  Electrochim. Acta., 4, 325-361(1961). 

http://dx.doi.org/10.1016/0013-4686(61)80026-1.

Da Rocha, J. C., Da Cunha Ponciano Gomes, J. A., D’Elia, E., Corrosion inhibition of carbon steel in hydrochloric acid solution by fruit peel aqueous  extracts,  Corros.  Sci., 52, 2341-2348(2010). 

http://http://dx.doi.org/10.1016/ j.corsci.2010.03.033.

El-Etre, A. Y., Inhibition of C-steel corrosion in acidic solution using the aqueous extract of zallouh root. Mater. Chem. Phys., 108, 278-282(2008).  

http://dx.doi.org/10.1016/ j.matchemphys.2007.09.037.

Gopi,  D.,  Govindaraju,  K.  M.,   Kavitha,  L., Investigation of triazole derived Schiff bases as corrosion  inhibitors  for  mild  steel  in hydrochloric  acid  medium,  J.Appl. Electrochem., 40, 1349-1356(2010). 

http://http:// dx.doi.org/ 10.1007/s10800-010-0092-z.

Jeyaprabha,  C.,  Sathiyanarayanan,  S., Muralidharan, S., Venkatachari, G., Corrosion inhibition of iron in 0.5 mol L-1 H2SO4 by halide  ions  J.Braz.  Chem.  Soc.,  17, 61– 67(2006). 

http://dx.doi.org/10.1590/ S0103-50532006000100009.

Li,  X. H., Mu, G.  N., Tween-40  as  corrosion inhibitor for cold rolled steel in sulphuric acid: Weight  loss  study,  electrochemical characterization, and AFM, Appl. Surf. Sci., 252, 1254-1265(2005).  

http://http://dx.doi.org/ 10.1016/j.apsusc.2005.02.118.

Li, X. M. , Tang, L. B., Li, L., Mu, G. N., Liu, G. H.,  Synergistic  inhibition  effect  of  6-benzylaminopurine  and  iodide  ion  on  the corrosion  of  cold  rolled  steel  in H3PO4 solution,  Corros.Sci., 48, 308-321(2006).

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