Narrow Results

The corrosion inhibition of carbon steel (CS) in 3 M HCl was thoroughly investigated in the presence and absence of areca plant extracts as a green corrosion inhibitor. The effect of solution temperature and different amounts of areca plant extracts was examined through gasometric, colorimeter and atomic absorption spectroscopy techniques. Surface studies were screened by scanning electron microscopy (SEM) technique. The results of these techniques show that areca plant extracts (arecanut husk extract, arecanut seed extract and areca flower extract) behave as a nontoxic corrosion inhibitor for CS in 3 M HCl solution. Areca plant extract (arecanut husk extract, arecanut seed extract and areca flower extracts) shows maximum protection efficiency at 4 g/L extract amount.

Corrosion protection of expired Atenolol drug on the Al in the 3M HCl was investigated through the weight loss, gasometric, Tafel plot, impedance, atomic absorption spectroscopy (AAS), quantum chemical, scanning electron microscopy (SEM) and atomic force microscopy (AFM) studies. The addition of different concentrations of expired Atenolol drug enhances the protection efficiency. Gasometric technique was performed in order to study the variation in the amount of hydrogen gas in the presence and absence of the inhibitor. The potentiodynamic polarization plots show that the expired Atenolol drug acts as a mixed type. Data of impedance studies show that the charge transfer process controls the corrosion of Al in the 3M HCl medium. The SEM and AFM results explore that the expired Atenolol drug is a powerful corrosion inhibitor for the Al in HCl solution.