2018/01/08 by Chahdi, H. Steli, Zouitini, Ayman
Engineering · Materials Science · #Concrete Corrosion and Durability #Corrosion Behavior and Inhibition
paper · doi:10.48317/imist.prsm/morjchem-v6i3.11041
openalex publication_date 2018/01/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/01
The effect of Indazole derivative (AY20) against the corrosion of mild steel (MS) in 1 M acidic chloride (HCl) solution was investigated by chemical (weight loss – WL) and electrochemical (Tafel polarization and Electrochemical impedance spectroscopy) techniques. From all the four methods, it is inferred that the percentage of inhibition efficiency increases with increasing the inhibitor concentration from 10-3M to 10-6M. The adsorption behavior of inhibitor obeyed through Langmuir isotherm model. EIS technique exhibits one capacitive loop indicating that, the corrosion reaction is controlled by charge transfer process. Tafel polarization studies revealed that the investigated inhibitor is mixed type and the mode of adsorption is chemical in nature. Theoretical quantum chemical calculations were performed to confirm the ability of (AY20) to adsorb onto mild steel surface. The results obtained from different techniques are in good agreement.