• N.Kavitha

Corrosion protection effect of aqueous extract of leaves of Leucas Aspera (ALA) on mild steel in 1M HCl medium has been investigated by weight loss and electrochemical techniques.The corrosion inhibition efficiency increases on increasing plant extract concentration up to 1.25 v/v. Inhibition efficiency of 87.22% was achieved with highest inhibitor (ALA) concentration (1.25 v/v) at room temperature. Adsorption of this plant extract on the mild steel surface obeys the Langmuir adsorption isotherm. Results obtained from the AC impedance reveal that the process of inhibition is through charge transfer reaction. Surface analysis (FE-SEM and EDXS, FT-IR) was also carried out to establish the corrosion inhibitive property of this plant extract in HCl solution. FE-SEM and FT-IR confirmed the adsorption of ALA on mild steel surface.

Mild steel; Corrosion; Potentiodynamic polarization; electrochemical impedance spectroscopy; Leucas Aspera

"Corrosion Protection of mild steel by the aqueous extract of Leucas Aspera Leaves in HCl medium", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 2, page no.690-708, February-2020, Available :http://www.jetir.org/papers/JETIR2002100.pdf

"Corrosion Protection of mild steel by the aqueous extract of Leucas Aspera Leaves in HCl medium", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 2, page no. pp690-708, February-2020, Available at : http://www.jetir.org/papers/JETIR2002100.pdf