Aspartame as a Green and Effective Corrosion Inhibitor for T95 Carbon Steel in 15 wt.% HCl Solution

Oil well acidizing, although a stimulation process, induces the corrosion of metallic equipment and tubing. There is, at present, high demand for effective less toxic high-temperature inhibitors acidizing process due to failing existing temperatures occasioned by increases in depths. In this study, aspartame (ASP), commercially available natural compound, is examined as inhibitor T95 carbon steel 15 wt.% HCl solution 60, 70, 80, 90 °C using weight loss, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), scanning electron microscope (SEM), energy dispersive (EDX), optical profilometry (OP) techniques. It was found that ASP possesses inhibiting effect studied conditions. Inhibition efficiency increased with temperature. With 2000 ppm ASP, inhibition 86% achieved from loss method after 4 h immersion. Results techniques are good agreement results. PDP results reveal acted mixed-type under investigated The ability adsorption on surface has been confirmed SEM, OP, EDX promising active compound formulation inhibitors.