engleski

The influence of Lavandula angustifolia L. oil on corrosion of Al-3Mg alloy

Natural oil extracted from Lavandula angustifolia L. was investigated as corrosion inhibitor of Al-3 Mg alloy in 3% NaCl solution using weight loss, polarization measurements and SEM. The oil dissolved in ethanol and used as 30% (v/v) solution, was found to retard the corrosion rate of Al-3 Mg alloy even at high temperatures. The inhibiting effect of lavender oil components on Al-3 Mg surface was attributed to the Langmuir’s adsorption isotherm. It was found that the L. angustifolia L. oil provides a good protection to Al-3 Mg alloy against pitting corrosion in sodium chloride solution.

aluminium alloy; weight loss; polarization; pitting corrosion

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