Eugenia Jambolana Used as Corrosion Inhibitor on Mild Steel in 1N Hydrochloric Acid Medium

The inhibition efficacy of Eugenia Jambolana fruit peel (EJFP) extract on mild steel in 1N Hydrochloric acid with various exposure time (24 to 360hrs) and temperature (303 to 323K) are investigated by mass loss measurements. The value of inhibition efficiency is increased with increase of inhibitor concentration and rise in temperature is suggestive of chemisorption. The adsorption of EJFP onto the mild steel surface is found to follow the Langmuir adsorption isotherm. Both kinetic (activation energy and heat energy change) as well as thermodynamics parameters (adsorption of enthalpy, entropy and Gibbs free energy) are calculated and discussed in details. The characterization of alcoholic extract of inhibitor and corrosion products formed on the metal surface is analyzed by UV, FT-IR and XRD spectral studies.

Author(s): P. Deepa rani, A. Petchiammal, M. Pirammarajeswari, C. Rajeswari and S. Selvaraj

Abstract | PDF

Share This Article