The role of Lavandula sp. extract for effective inhibiting the mild steel corrosion in the hydrochloric acid solution

The role of lavender extract in the present study is to examine the effect of inhibiting the corrosion of mild steel in the ambient conditions with its green and eco-friendly effect. It was determined the influence of inhibitor using electrochemical impedance spectroscopy (EIS) in different immersion times. From the EIS measurement results, it was observed that as the concentration of Lavandula extract in the HCl solution increased, the polarization resistance (Rp) values in the EIS diagram increased. Finally, scanning electron microscope (SEM) analysis was conducted to better clarify the surface inhibition of the electrode containing Lavandula sp. extract at the highest concentration, 0.500% (w/v), at the end of the 120 h immersion time. It has been observed that both the surface analysis and EIS findings are very compatible with each other.

Keywords:

Lavandula, EIS, HCl corrosion, Adsorption isotherm SEM.,

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