Abstract
The effect of Egyptian Schinus-terebinthifolius extract (STE) on carbon steel corrosion in 0.5 M HCl solution was investigated by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), electrochemical frequency modulation (EFM), scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) techniques. The results show that STE is a good inhibitor in 0.5 M HCl. The adsorption of STE obeys Langmuir adsorption isotherm. STE acts as mixed-type but mainly cathodic inhibitor in 0.5 M HCl. The thermodynamic parameters of the corrosion process were calculated and discussed. Maximum inhibition approached 93.3% at 900 ppm STE. SEM showed the Protective film formation on steel surface in presence of STE.
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Shalabi, K., Nazeer, A.A. Adsorption and inhibitive effect of Schinus terebinthifolius extract as a green corrosion inhibitor for carbon steel in acidic solution. Prot Met Phys Chem Surf 51, 908–917 (2015). https://doi.org/10.1134/S2070205115050226
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DOI: https://doi.org/10.1134/S2070205115050226