%0 Journal Article %T Omeprazole's Inhibitive Activity on the Corrosion of the Al Alloy in 0.5 M H2SO4 Solution %J Analytical and Bioanalytical Electrochemistry %I Analytical and Bioanalytical Electrochemistry is an international scientific journal, which is published online every 3 months (since 2009), every 2 months (since 2011) and monthly (since 2018) by Center of Excellence in Electrochemistry, University of Tehran %Z - %A Belafhaili, A. %A El Hawary, M. %A Bellaouchou, A. %A Guenbour, A. %A Warad, I. %A Zarrouk, Abdelkader M %D 2023 %\ 02/28/2023 %V 15 %N 2 %P 118-136 %! Omeprazole's Inhibitive Activity on the Corrosion of the Al Alloy in 0.5 M H2SO4 Solution %K Aluminium alloy corrosion %K Sulfuric Acid %K Omeprazole %K Electrochemical techniques %K SEM/EDS/XRD %R 10.22034/abec.2023.702330 %X Potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) techniques were used to examine the inhibitory effect of omeprazole (OMP) on the corrosive behavior of Al-Mg-Si alloy in 0.5 M H2SO4. SEM/EDS microscopy methods and X-ray diffraction (XRD) analysis were utilized to examine the surface morphology. According to the findings, OMP acted flawlessly as an inhibitor of corrosion for an Al-Mg-Si alloy in 0.5 M H2SO4 at 298 K. The effect of temperature on inhibition efficiency was also discussed. Moreover, the experimental results suggest that OMP is an effective inhibitor, with a maximum inhibition efficiency of 90.5% at a concentration of 1.5 g/L, and the potentiodynamic polarization curves show that it is a mixed-type inhibitor. Electrochemical impedance spectroscopy discovered that an inhibitory adsorption film was being formed on the surface of the Al-Mg-Si alloy, and that this adsorption isotherm model is being followed. Thermodynamic activation parameters have been identified and discussed. %U https://www.abechem.com/article_702330_9c4eca47f6a10ac0477ded2f74b6cfa5.pdf