Corrosion Inhibition of Medium Carbon Steel in the Acidic Medium Using Alcoholic and Aqueous Extract of Kujarat Tea Plant

This study deals with the corrosion inhibition of metal process medium carbon steel using 1M HCl for kinetic studies and rate reaction determination. The weight loss method is applied to pieces Medium divided Cubans dimensions (0.4*2*2.4) cm , use Tafel Extrapolation Method, samples were polished carbide silicon paper (180,200,400,600,800,1000). immersed in alcoholic ethanol at a temperature 293K 3hr. Natural inhibitor Kujarat Tea (Hibiscus sabdarriffa L.) used which extracted aqueous medium, different concentrations (1000،2000, 3000) ppm have been ; best concentration found through results that 1000 2000 ppm, indicate highest degree extract 93.3% 90.5% at293K. While shows efficiency 92.4% 88.6% respectively. structure was investigated infrared spectroscopy (FTIR), surface morphology tested scanning electron microscope (SEM).