I. Zaafarany*
Chem. Dept., Faculty of Appl. Sci., Umm Al-qura University, P.O. Box. 118, Makkah Al Mukaramha, Saudia Arabia
Received 10 June 2009; accepted 21 October 2009
Abstract
The effect of some phenyl phthalimide derivatives on the corrosion of carbon steel in 0.5 M H2SO4 solution was studied using weight loss and galvanostatic polarization techniques. The percentage inhibition efficiency was found to increase with increasing concentration of inhibitor and with decreasing temperature. Inhibition was explained by adsorption of these compounds on the metal surface. The adsorption follows Freundlich adsorption isotherms. Some thermodynamic functions were computed and discussed.
Keywords: C-steel corrosion inhibitors, phenyl phthalimide, adsorption.
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References
1. S.A. Abd El-Maksoud, Appl. Surf. Sci. 206 (2003) 129. [ Links ]
2. M.A. Quraishi and R. Sardar, J. Appl. Electrochem. 33 (2003) 1163.
3. S.S. Mahmoud and M.M. Ahmed, Port. Electrochim. Acta 24 (2006) 37.
4. M. Abdallah, A.Y. El-Etre, M.G. Soliman and E.M. Mabrouk, Anti-Corros. Methods and Mater. 53(2) (2006) 118.
5. M. Abdallah, E.A. Helal and A.S. Fouda, Corros. Sci. 48 (2006) 1639.
6. A.A. Al-Sarawy, A.S. Fouda and W.A. Shehab El-Dein, Desalination 229 (2008) 279
]]> 7. M.A. Amin, Q. Mohsen and O.A. Hazzazi, Mater Chem. and Phys. 114 (2009) 908.8. M.R. Arshadi, M.G. Hosseini and M. Ghorbani, Br. Corros. J. 37(1) (2002) 76.
9. M. Ozcan, I. Dehri and M. Erbil, Appl. Surf. Sci. 236 (2004) 155.
10. M. Abdallah, A.S. Fouda, S.A. Shama and E.A. Afifi, African J. Pure Appl. Chem. 2(9) (2008) 83.
11. P.B. Mathur and T. Vasudervam, Corrosion 38(1982) 17.
12. B.G. Ateya, B.E. Anadouli and F.M. El-Nizamy, Bull. Chem. Soc. Japan 54 (1981) 3157.
13. K. Aramaki and N. Hackerman, J. Electrochem. Soc. 116 (1969) 568.
14. A.M. Kunitsugn, W. Hegi wara and H. Nishihara, Corrosion 27( 5) (1987) 487.
15. I. Putilova, S. Balezin , I.N. Barannik and V.P. Bishop, Metall. Corros. Inhibit, Pergamon, Oxford, 1960.
16. S.S. Abd El-Rehim, S.A. M. Refaey, F. Taha, M.B. Saleh and R.A. Ahmed, J. Appl. Electrochem. 31 (2001) 429.
]]> 17. B. Berge, K. Grijotheim , C. Krohn, R. Neumann and K. Torkiep, Light Metals (edited by S.R. Leavitt), Proceeding of 105th Annual Meeting (1976) 23.18. M. Kliskic, J. Radosevi c and S. Gndic, J. Appl. Electrochem. 27 (1997) 947.
19. K. Khamis and M. Ateya, Corrosion 50(2) (1994) 106.
20. M. Abdallah and H.E. Megahed, Monatshefte für Chemie 126 (1995) 519.
* Corresponding author. E-mail address: ishaq_zaafarany@yahoo.com
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