Application of Petrochemical Heterocyclic Compounds as Corrosion Inhibitors

Abstract

Theoretical concepts of inhibition mechanism in metal corrosion and forecasting of protective properties of substances are connected with experimental research of surface-active materials adsorption on metal surface. Application of petrochemicals, including intermediate products and petrochemical wastes for making new highly efficient and quite cheap corrosion inhibitors is promising. Research results of adsorption of some 1,3-diheterocycloalcanes-based compounds by method for measuring double-electric layer capacity appearing in “metal-electrolyte” interface in blank corrosion medium are reviewed herein. Therewith both blocking and energy effects of inhibitors are found to be the most efficient at first approach. Blocking effect is reducing area of metal surface affected by corrosion. Energy or ψ 1-effect occurs due to changing of double-electric layer structure in “metal-corrosion medium” interface. Adsorption results may be used to study corrosion inhibition mechanism by the analyzed compounds.