Protection of Metals

, Volume 41, Issue 1, pp 51–54 | Cite as

The effect of thermodynamic parameters of the adsorption surfactants by lead on the lead’s corrosion rate

  • B. N. Afanas’ev
  • Yu. P. Akulova
  • O. R. Yakovleva


For several surfactants, free energies of adsorption Δ(G a 0 )γ are calculated relative to a symmetrically chosen standard state. It is shown that they characterize the strength of organic molecule-metal bond. The effect of these surfactants on active corrosion of lead in acetic acid solution, as well as correlation between the inhibition coefficient and the free energy of adsorption Δ(G a 0 )γ, is studied by measuring the polarization resistance. The corrosion rate of lead in acetic acid solution with and without adding surfactants was studied gravimetrically. In this case, the corrosion rate was virtually independent of surfactant additives and their chemical nature; this is associated with the oxidation of lead surface.


Oxidation Acetic Surfactant Acetic Acid Free Energy 
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Copyright information

© MAIK “Nauka/Interperiodica” 2005

Authors and Affiliations

  • B. N. Afanas’ev
    • 1
  • Yu. P. Akulova
    • 1
  • O. R. Yakovleva
    • 2
  1. 1.St. Petersburg State Institute of Technology (Technical University)St. PetersburgRussia
  2. 2.JSC “NIAI Istochnik” CompanySt. PetersburgRussia

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