Corrosion Inhibition of Juglans Leaves Extract for Steel in Hydrochloric Acid Solution

Juglans leaves extract (JLE) may be used as a good environmentally-friendly plant inhibitor. The inhibition effect of JLE on the corrosion of cold rolled steel (CRS) in 1.0 mol/L HCl was studied by weight loss and potentiodynamic polarization curve methods. The results show that JLE is a good inhibitor in hydrochloric acid for CRS, and the adsorption of the plant inhibitor on the CRS surface obeys the Langmuir adsorption isotherm equation. Polarization curves show that JLE is a mixed-type inhibitor.