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eng Corrosion Inhibition of Aluminium by Alchemilla vulgaris L. Extract in 3 % NaCl Solution
Martinović, Ivana; Pilić, Zora; Zlatić, Gloria; Barišić, Marija; Čelan, Stipe
Croatica Chemica Acta Vol. 94, No. 2, 2021
Extract of <i>Alchemilla vulgaris</i> L. was investigated as eco-friendly corrosion inhibitor for aluminium in 3 % NaCl using electrochemical techniques. According to the results, inhibition efficiency increases with the increase concentration of extract and the highest efficiency (~80 %) is recorded for the maximal concentration of extract (1.0 g L–1). The inhibition activity of extract occurs by the spontaneous physisorption (ΔG ≈ –16 kJ mol–1) on active sites of aluminium surface that follows Freundlich isotherm. Polarization curves showed t...
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