Adenium obesum Extract as a Safe Corrosion Inhibitor for C-Steel in NaCl Solutions: Investigation of Biological Effects

Abstract

In this paper, the impacts of polluted NaCl (3.5% NaCl + 16 ppm Na2S) on the corrosion of C-steel (CS) at different temperatures and in presence of different concentrations of Adenium obesum extract (AOE) were considered by chemical, electrochemical techniques and other surface examination tests. The outcomes demonstrate that the corrosion rate of CS diminishes with increment of inhibitor doses. % IE reached to ≈90% at 300 ppm AOE.The acquired outcomes showed that the examined extract is physically adsorbed on the CS surface and followed Temkin adsorption isotherm. The potentiodynamic polarization (PP) information revealed that this extract goes about as mixed kind inhibitor. The results got from the various techniques are in great agreement.