1. Adsorption and Anticorrosion Behavior of Expired Meloxicam on Mild Steel in Hydrochloric Acid Solution
- Author
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Abd El-Aziz S. Fouda, E. A. Sello, A. El-Hossiany, and F. I. El-Dossoki
- Subjects
Materials science ,Scanning electron microscope ,020209 energy ,Hydrochloric acid ,02 engineering and technology ,Surfaces and Interfaces ,021001 nanoscience & nanotechnology ,Electrochemistry ,Industrial and Manufacturing Engineering ,Surfaces, Coatings and Films ,Corrosion ,Dielectric spectroscopy ,chemistry.chemical_compound ,Meloxicam ,Adsorption ,chemistry ,0202 electrical engineering, electronic engineering, information engineering ,medicine ,Fourier transform infrared spectroscopy ,0210 nano-technology ,medicine.drug ,Nuclear chemistry - Abstract
The inhibiting effect of the expired meloxicam on the corrosion of mild steel (MS) in 1 M HCl was tested by the weight loss, electrochemical frequency modulation, potentiodynamic polarization (PP) and electrochemical impedance spectroscopy techniques. The PP curves showed that this drug acts as mixed type inhibitor. This drug was adsorbed chemically on the MS surface following the Temkin adsorption isotherm. Some thermodynamic parameters were computed and discussed. The results indicated that the protection efficiency increases by raising both the doses of the inhibitor and the temperature of the medium. The morphology of the MS surface was analyzed by scanning electron microscopy, atomic force microscopy, and Fourier transform infrared spectroscopy. All of the obtained results from different techniques are similar.
- Published
- 2020
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