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Portugaliae Electrochimica Acta

versão impressa ISSN 0872-1904

Port. Electrochim. Acta v.26 n.2 Coimbra  2008

 

Cobalt and Molybdate Ions Effects on the Passivation of Iron Based FeCoC Ternary Alloys, in non Deaerated Solution of 10 -3 M NaHCO3 + 10-3 M Na2SO4, at 25 °C

 

F. Haddad,*A. Benchettara, S.E. Amara, R. Kesri

 

Laboratoire d’Electrochimie-Corrosion, Métallurgie et Chimie Minérale, Faculté de Chimie, U. S. T. H. B., B. P. 32, El Alia, Bab Ezzouar (16111), Alger, Algérie

 

Received 25 April 2007; accepted 4 July 2007

 

Abstract

In the present paper, the electrochemical behaviour of four based iron FeCoC ternary alloys was studied in non deaerated solution of 10-3 M NaHCO3 + 10-3 M Na 2SO4, at 25 °C, and compared to that of pure iron and cobalt. The inhibition effect of sodium molybdate has also been considered for different concentrations. It was noted that the oxygen oxidizes the FeCoC ternary alloys except that with the most important cobalt content.

For this reason, a potentiodynamic polarisation was carried out at different temperatures (25, 35, 45 and 55°C) in which the current growth versus temperature indicates really that molybdate oxidizes this alloy.

Keywords: iron, cobalt, FeCoC ternary alloys, bicarbonate, sodium molybdate.

 

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References

1. A. Weisstuch and C.E. Schell, Corrosion-Nace Vol. 28, N° 8 (August 1972) 299-306.        [ Links ]

2. D.R. Robitaille, Materials Performance 15 (1976) 40-44.

3. M. Saremi, C. Dehghanian, M. Mohammadi Sabet, Corrosion Science 48 (2006) 1404-1412.

4. D.R. Robitaille, Industrial Water Engineering (November/December 1979) 14-19.

5. G.H. Cartledge, Corrosion-Nace Vol. 24, N° 8 (August 1968) 223-236.

6. M.S. Vukasovich and D.R. Robitaille, Journal of the Less-Common Metals 54 (1977) 437-448. 

7. M.A. Stranick, Corrosion-Nace Vol. 40, N° 6 (June 1984) 296-302.

8. I.J. Yang, Proceedings of the 7th European Symposium on Corrosion Inhibitors (7SEIC), Ann. Univ. Ferrara, N. S., Sez. V, Suppl. N. 9 (1990)  919-930.

9. D.G. Kolman and S.R. Taylor, Corrosion 49, N° 8 (August 1993) 635-643.

10. J.M. Zhao, Y. Zuo, Corrosion Science 44 (2002) 2119-2130.

11. G.O. Ilevbare, G.T. Burstein, Corrosion Science 45 (2003) 1545-1569.

12. C.R. Alentejano, I.V. Aoki, Electrochimica Acta 49 (2004) 2779-2785.

13. G. Mu, X. Li, Q. Qu, J. Zhou, Corrosion Science 48 (2006) 445-459.

14. K. Aramaki, Corrosion Science 43 (2001) 591-604.

15. K.C. Emregül, A.A. Aksüt, Corrosion Science 49 (2003) 2415-2433.

16. E.E. Ait Addi, L. Bazzi, M. Elhilali, R. Salghi, B. Hammouti, M. Mihit, Applied Surface Science 253 (2006) 555-560.

17. K.-H. Na, S.-I. Pyun, Journal of Electroanalytical Chemistry 596 (2006) 7-12.

18. M.S. Vukasovich and G.G. Van Riper, Proceedings of the 7th European Symposium on Corrosion Inhibitors (7SEIC), Ann. Univ. Ferrara, N. S., Sez. V, Suppl. N. 9 (1990) 673-683.

19. C.M. Mustafa, S.M. Shahinoor Islam Dulal, Corrosion 52 N° 1 (1996) 16-22.

20. A.M. Shams El Din, L. Wang, Desalination 107 (1996) 29-43.

21. M. Meziane, F. Kermiche, C. Fiaud, British Corrosion Journal 33 N° 4 (1998) 302-308.

22. D.R. Lide, Handbook of Chemistry and Physics, 78th Edition, 1997-1998.

23. Valéria A. Alves, Christopher M.A. Brett, Electrochimica Acta 47 (2002)  2081-2091.

24. T. Kodama, R. Ambrose, Corrosion-Nace Vol. 33 N°5 (1977) 155-161.

25. A.J. Bentley, L.G. Earwaker, J.P.G. Farr, M. Saremi, A.M. Seeey, Polyhedron  5 N° 1/2 (1986) 547-550.

26. M. Ürgen, A.F. Cakir, Corrosion Science 32 N° 8 (1991) 841-852.

27. S. Virtanen, B. Surber, P. Nylund, Corrosion Science 43 (2001) 1165-1177.

 

* Corresponding author. E-mail address: hf76dz@hotmail.com

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