Thymus satureoides Oil as Green Corrosion Inhibitor for 316L Stainless Steel in 3% NaCl: Experimental and Theoretical Studies

The protection of 316L stainless steel in 3% NaCl by the essential oil Thymus satureoides has been studied many techniques such as potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), atomic force microscopy (AFM) and scanning electron (SEM) coupled with energy dispersive X-ray analysis (EDXS). results show that corrosion rate decreases increase concentration inhibitor up to an efficiency 82% for a 1600 ppm. acts anode inhibitor. values inhibition effectiveness obtained from polarization curves (EIS) are good agreement. Geometry optimization calculation structural electronic properties molecular system have carried out using density functional theory DFT (B3LYP, BMK M062X) level 6-311++G** basis set.