Abstract
Anticorrosion activity of Cassia senna leaf extract (CSLE) as a corrosion inhibitor in 1M hydrochloric acid solution (HCl) has been investigated using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), UV-visible spectroscopy, and x-ray diffraction (XRD) studies. Results show that the inhibition efficiency decreases with the rise of temperature from 308 to 313 K. Polarization measurements show that the CSLE acts as a mixed-type inhibitor. Nyquist plot shows that on increasing CSLE concentration, the charge transfer increases and the double-layer capacitance decreases. The adsorption of CSLE on mild steel obeys the Langmuir adsorption isotherm. Scanning electron microscopy (SEM) studies confirm the adsorption of CSLE on mild steel surfaces.
Issue Section:
Research Papers
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