Studies on the adsorption and inhibiting properties of Salix Babylonica Extract on corrosion of carbon steel in hydrochloric acid solutions

The influence of salix babylonica extract (sbe) on carbon steel (cs) corrosion in 1 molar hcl at 25°c has been investigated. mass loss (ml) method, tafel polarization (tp), ac impedance (eis) and electrochemical frequency modulation (efm) tests have been used to derive the corrosion parameters. the data obtained from both tests (eis and efm) are comparable with those obtained from tafel extrapolation tests, approving confirmation calculation of corrosion rates of the final. the inhibiting action of sbe was discussed in terms of blocking the cs surface by molecules adsorbed on the active sites. the adsorption was found to obey temkin isotherm. the morphology of protected and unprotected cs has been examined by different techniques like: fourier transform infrared spectroscopy (ftir), scanning electron microscope (sem), energy dispersive x-ray (edx) and atomic force microscope (afm).