Abstract
In this work, the inhibitive effect of some antibacterial drugs against the corrosion of 316 stainless steel in 1M HCl has been studied by weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The inhibiting effect explained by adsorption of the additives on steel surface. The inhibition efficiency increases with increasing the inhibitors concentrations and decreases with increasing the temperature. The data obtained fit well to Langmuir adsorption isotherm and the kinetic-thermodynamic model. The results of polarization studies indicate that the investigated antibacterial drugs are mixed type inhibitors. Increasing the inhibition efficiency of the investigated inhibitors with the addition of iodide ions indicates that iodide ions play important role in the adsorption process. The efficiencies obtained from the different electrochemical techniques were in good agreement which prove the validity of these tools in the measurements of the tested inhibitors.
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El-Abbasy, H.M., Nazeer, A.A. & Fouda, A.S. Electrochemical assessment of inhibitive behavior of some antibacterial drugs on 316 stainless steel in acidic medium. Prot Met Phys Chem Surf 52, 562–573 (2016). https://doi.org/10.1134/S2070205116030084
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DOI: https://doi.org/10.1134/S2070205116030084