The Study of 2, 4-Diamino-6-methly-1, 3, 5-triazine on the Corrosion Inhibition of Mild Steel in The Hydrochloric Acid Medium: Integrated Theoretical and Experimental Investigations

The aim of this study is the investigation adsorption and corrosion behaviors 2,4-Diamino-6-methly-1,3,5-triazine (2-DMT) on mild steel (MS) in 0.5 M HCI solution using many experimental theoretical studies such as potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), linear polarization resistance (LPR), isotherm, potential zero charge (PZC), scanning electron (SEM), atomic force microscopies (AFM) quantum chemical calculations. results showed that 2-DMT has an outstanding anti-corrosion performance 94.6% at optimum concentration 10 mM MS surface, which was exposed to inhibited 298 K, does not contain pits, cracks or deformations. Values icorr are found be 0.51, 0.22, 0.098, 0.072 0.039 mA cm-2 for blank each 2-DMT. Hydrogen volumes 90 4.6 mL existence 10.0 2-DMT, respectively. observed much more consistent with Langmuir. high explained by effective adsorbing organic matter surface. HOMO, LUMO energies energy gap (∆E) -7.1980, -1.9959 5.2021 eV, Accordingly, it suggested compound can used industrial acid cleaning procedure.