Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

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Original Articles: 2017 Vol: 9 Issue: 6

Corrosion Inhibition Efficiency of Fenugreek Leaves Extract on Mild Steel Surface in Acidic Medium


The anticorrosion behavior of the aqueous extract of Fenugreek leaves has been investigated as mild steel corrosion inhibitor in Sulphuric acid medium. The weight loss method was performed for determination of corrosion rate at 298 K, 303 K, 308 K and 313 K temperatures. The results showed that increase of the inhibition efficiency with increasing the concentration of plant extract reaching 89.06% at 303 K in the presence of 4 g/L of extract and decreased with increasing the temperature. The surface analysis was performed by scanning electron microscope technique that confirmed the formation of a protective layer on the metal surface in the presence of the extract.