L’inhibition de la corrosion du fer et du zinc en milieu acide par les sels de phosphonium

Etude comparative de l’influence de la réaction cathodique de réduction du proton

Inhibition of iron and zinc corrosion in acid environment by phosphonium salts

¹ Laboratoire de Corrosion et Traitements de surface, Université de Franche-Comté, Besançon
² Laboratoire d’Electrochimie Organique, Université de Clermont-Ferrand II, Aubière

Abstract

The quantification of the metallic corrosion can be a source of problem. The study of current density versus potential curves with an outward and backward sweep allows to understand the difficulty and to explain the corrosion mechanism. The reported work deals with the inhibition efficiency of different additives on zinc and iron corrosion rate. The so obtained efficiency is compared to that of the proton reduction on metallic surface and to the own efficiency of the additive.