Green Inhibitory Effect of Raw Tamarind Extract on Steel Plates in Acid Medium

The corrosion inhibition of steel plates by tamarind extract in 1% H2SO4 and 1% HCl has been studied at room temperature up to 120 hours. The experimental results obtained reveals that there was an increase in the weight of steel plates at around 72 hours when steel plates were immersed in tamarind solution. Similar, observation in the increase in the weight of the steel plates at around 48 hours was observed when steel plates were immersed in mixture of tamarind and sulphuric acid, tamarind and hydrochloric acid. This increase in weight of the steel plates shows the formation of an oxide layer on its surface, thus preventing and inhibiting corrosion of the steel plates. Key Words: Corrosion, Raw Tamarind, Steel plates, Oxide layer, Inhibition.