Corrosion Protection in Acidic Medium for Mild Steel Using Various Plants Extract as Green Corrosion Inhibitor - A Review

Acidic solutions is widely adapted in industries for various operations whereas green corrosion inhibitors is used for the elimination of corrosion / deposition of scales. By using inhibitors, control of metal corrosion occurs in aggressive environment. Various types of natural composites were designed for finding out corrosion inhibition efficiency. Organic compounds possessing nitrogen, sulphur and oxygen exposed excellent inhibition effectiveness. Nevertheless, large number of natural compounds have toxic effect on environment as well as on living organism. Hence, it is necessary to point out cheap, easily available, biodegradable and eco-friendly inhibitor to corrosion with high inhibition efficiency. This article deliberates the properties of inhibitor, adsorption mechanism of inhibitor, inhibition mechanism and inhibitor efficiencies of plant extract in aggressive acidic environment.