Abstract
The strict environmental legislations and increasing ecological awareness among scientists have led to the development of “green” alternatives to mitigate corrosion. In the present work, literature on green corrosion inhibitors has been reviewed, and the salient features of our work on green corrosion inhibitors have been highlighted. Among the studied leaves, extractAndrographis paniculatashowed better inhibition performance (98%) than the other leaves extract.Strychnos nuxvomicashowed better inhibition (98%) than the other seed extracts.Moringa oleiferais reflected as a good corrosion inhibitor of mild steel in 1 M HCl with 98% inhibition efficiency among the studied fruits extract.Bacopa monnierishowed its maximum inhibition performance to be 95% at 600 ppm among the investigated stem extracts. All the reported plant extracts were found to inhibit the corrosion of mild steel in acid media.
Highlights
Among the several methods of corrosion control and prevention, the use of corrosion inhibitors is very popular
The inhibition effect of Zanthoxylum alatum plant extracts on the corrosion of mild steel in 5% and 15% aqueous hydrochloric acid solution was investigated by weight loss and electrochemical impedance spectroscopy (EIS) methods
The results indicated that the extracts functioned as a good inhibitor in both environments and inhibition efficiency increased with extracts concentration
Summary
Among the several methods of corrosion control and prevention, the use of corrosion inhibitors is very popular. The inhibition effect of Zanthoxylum alatum plant extracts on the corrosion of mild steel in 5% and 15% aqueous hydrochloric acid solution was investigated by weight loss and electrochemical impedance spectroscopy (EIS) methods. A comparative study of the inhibitory effect of plant extracts, Ocimum sanctum, Aegle marmelos, and Solanum trilobatum, on the Corrosion of mild steel in 1 N HCl medium was investigated using weight loss method, electrochemical methods, and hydrogen permeation method. The role of seed extract of Cyamopsis tetragonoloba on corrosion mitigation of mild steel in 1 M HCl was investigated by weight loss method and potentiodynamic polarization technique. The inhibitive effects of aqueous extracts of Eucalyptus (leaves), Hibiscus (flower), and Agaricus on the corrosion of mild steel for cooling-water systems, using tap water, have been investigated by means of weight loss (under static as well as dynamic conditions) and polarization methods.
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