Protection of Metals

, Volume 36, Issue 3, pp 202–208 | Cite as

Peculiar effect of chloride ions on the anodic dissolution of iron in solutions of various acidity

  • M. A. Pletnev
  • S. G. Morozov
  • V. P. Alekseev


Anodic behavior of iron in chloride solutions is studied in the pH range from 0 to 6 and at the concentration of chloride ions from 0.2 to 3 mol/l. Electrochemical measurements were supplemented with the raster electron microscopy studies, of electrode surfaces. The observed independence of the limiting dissolution current of pH is explained by a hypothesis that water does not participate in the anodic process at sufficiently large anodic overpotentials. Depending on the concentration of chloride ions, the continuity of the logi a-pH dependence is first interrupted and the, restored; the reaction order in hydroxide ions changes from a positive value to zero. This is probably caused by the “dynamic passivation” of iron with the adsorbed oxygen atoms and their competitive replacement by chloride ions.


Anodic Dissolution Anodic Potential Anodic Process Anodic Reaction Iron Surface 
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  1. 1.
    Florianovich, G.M., Sokolova, L.A., and Kolotyrkin, Ya.M.,Elektrokhimiya 1967, vol. 3, no. 11, p. 1359.Google Scholar
  2. 2.
    Kuznetsov, Yu.I., Oleinik, S.V., and Andreev, N.N.,Dokl. Akad. Nauk SSSR 1984, vol. 277, no. 4, p. 906.Google Scholar
  3. 3.
    Kolotyrkin, Ya.M., Lazorenko-Manevich, R.M., and Sokolova, L.A.,ibid., 1987, no. 3, p. 610.Google Scholar
  4. 4.
    Kolotyrkin, Ya.M.,Usp. Khim. 1992, vol. 31, no. 3, p. 322.Google Scholar
  5. 5.
    Lazorenko-Manevich, R.M., Sokolova, L.A., and Kolotyrkin, Ya.M.,Elektrokhimiya 1995, vol. 35, no. 3, p. 235.Google Scholar
  6. 6.
    Kish, L.,Kinetics of Electrochemical Metal Dissolution, Budapest: Akademiai Kiado, 1988.Google Scholar
  7. 7.
    Reshetnikov, S.M.,Ingibitory kislotnoi korrozii metallov (Inhibitors of Acid Corrosion of Metals), Leningrad: Khimiya, 1986.Google Scholar
  8. 8.
    Pletnev, M.A., Morozov, S.G., Tveritinova, E.S., and Shirobokov, I.B.,Zashch. Met. 1999, vol. 35, no. 2, p. 134.Google Scholar
  9. 9.
    Lorenz, W. and Eichkorn, H., inTrudy III mezhdunarodnogo kongressa po korrozii metallov (Proc. III Int. Congress on Metal Corrosion), Moscow: Mir, 1968, vol. 1, p. 184.Google Scholar
  10. 10.
    Folleher, B. and Heusler, K.E.,J. Electroanal. Chem., 1984, vol. 180, no. 1-2, p. 77.CrossRefGoogle Scholar
  11. 11.
    Khaldeev, G.V.,Strukturnaya korroziya metallov (Structural Corrosion of Metals), Perm: Permsk, Gos. Univ., 1994.Google Scholar
  12. 12.
    Chin, R.J. and Nobe, K.,J. Electrochem. Soc. 1972, vol. 119, no. 11, p. 1457.CrossRefGoogle Scholar
  13. 13.
    Bech-Nielsen, G. and Reeve, J.C.,Electrochim. Acta, 1982, vol. 27, no. 9, p. 1321.CrossRefGoogle Scholar
  14. 14.
    El Miligy, A.A., Geana, D., and Lorenz, W.I.,ibid. 1975, vol. 20, no. 4, p. 273.CrossRefGoogle Scholar
  15. 15.
    Heusler, K.E.,Encyclopaedia of Electrochemistry of the Elements, vol. 9:Iron, 1982, part A, p. 229.Google Scholar
  16. 16.
    Lazorenko-Manevich, R.M., Podobaev, A.N., and Sokolova, L.A.,Ross. Khim. Zh. 1998, vol. 42, no. 4, p. 75.Google Scholar
  17. 17.
    Lazorenko-Manevich, R.M. and Sokolova, L.A.,Elektrokhimiya, 1998, vol. 34, no. 9, p. 933.Google Scholar
  18. 18.
    Brodskii, A.M. and Daikhin, L.I.,ibid., 1998, vol. 25, no. 4, p. 435.Google Scholar
  19. 19.
    Silva, F. and Martins, A.,Electrochim. Acta 1998, vol. 44, nos. 6–7, p. 919.CrossRefGoogle Scholar
  20. 20.
    Kuznetsov, Yu.I.,Zashch. Met. 1994, vol. 30, no. 4, p. 341.Google Scholar

Copyright information

© MAIK “Nauka/Interperiodica” 2000

Authors and Affiliations

  • M. A. Pletnev
    • 1
  • S. G. Morozov
    • 1
  • V. P. Alekseev
    • 1
  1. 1.Udmurtiya State UniversityIzhevskRussia

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