Corrosion Inhibition Property of Mangala Dry Arecanut Seed Extract on Mild Steel Surface in Hydrochloric Acid Environment
Narasimha Raghavendra 1*, Ishwara J. Bhat 2
1 Department of Chemistry, K.L.E. Society's P. C. Jabin Science College (Autonomous) Vidyanagar, Hubballi-580031, India
2 Department of Chemistry, Mangalore University, Mangalagangotri, Karnataka-574199, India
The green approach is rapidly growing and replacement of toxic synthetic compounds by natural products is greatly increased for health and environmental concerns. Green chemicals from plant products are available in large amounts from various renewable sources. The material corrosion is an inescapable but controllable process. Generally, plant species contain P, S, N and O atoms in their extracts expected to show good corrosion inhibition property. Hence, in the current study, we selected Mangala dry arecanut seeds. The chemical and electrochemical behavior of mild steel in an acid environment (0.5M HCl) was studied in the presence of Mangala dry arecanut seed extract as a corrosion inhibitor by gravimetric (mass loss), Tafel, impedance and scanning electron microscopy studies. The increase in the concentration of seed extract increased the protection efficiency but it was decreased with the rise in time and temperature as observed by the mass loss technique. The Tafel diagram and surface characterization by scanning electron microscopy hinted the superior anticorrosion property of Mangala dry arecanut seed extract. The corrosion inhibition mechanism of Mangala dry arecanut seed extract was further explained by the thermodynamic principles.