Journal of Applied Electrochemistry

, Volume 10, Issue 4, pp 505–510 | Cite as

Substituted tertiary arsine and phosphines as interfacial adsorption inhibitors for corrosion of zinc in perchloric acid

  • H. B. Rudresh
  • S. M. Mayanna


The effect of triphenylarsine, triphenylphosphine and tri-p-tolylphosphine on the corrosion of zinc in HClO4 at 30° C was studied. A significant decrease in the corrosion rate of zinc is obtained by the addition of these compounds. The corrosion rate is a function of the temperature, pH of the medium and the concentration of the inhibitors. The percentage protection calculated from weight loss and polarization methods are in good agreement. The apparent free energies of adsorption of inhibitors for different possible modes of adsorption are evaluated. The experimental data obtained are in agreement with the corrosion inhibition of zinc by interfacial adsorption of inhibitors.


Experimental Data Zinc Physical Chemistry Free Energy Corrosion Rate 
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Copyright information

© Chapman and Hall Ltd. 1980

Authors and Affiliations

  • H. B. Rudresh
    • 1
  • S. M. Mayanna
    • 1
  1. 1.Department of Chemistry, Central CollegeBangalore UniversityBangaloreIndia

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