Anticorrosive Activity of Rosemarinus officinalis L. Leaves Extract Against Mild Steel in Dilute Hydrochloric Acid
Journal Title: International Journal of Innovative Research in Advanced Engineering - Year 2016, Vol 0, Issue 0
Abstract
The rosemary (Rosemarinus officialis L) leaves extract was evaluated for inhibitive action towards the corrosion of mild steel in 0.1 N HCl at ambient temperature by gravimetric and potential monitoring techniques. There was a drastic reduction in weight loss of test samples. The corrosion inhibition efficiency of extract varied with concentration of extract and duration of immersion of mild steel in corrosive medium. The 100% leaves extract of Rosemarinus officinalis L gave 98.33% corrosion inhibition efficiency as compared to control. The corrosion rate was significantly reduced and curtailed to 0.27 mm/year at 100% leaves extract concentration. The corrosion inhibition of leaves extract of Rosemarinus officialis L is attributed to protective film formed by the complex organic compounds of the extract.
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