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  CORROSION INHIBITION OF ALUMINIUM ALLOY IN ACIDIC MEDIUM BY ETHANOLIC EXTRACTS OF Balanites aegyptiaca
AUTHORS:   B. El-yaqub, S. O. Okeniyi

ABSTRACT
Abstract The influence of naturally occurring extract of Balanites aegyptiaca on the corrosion inhibition of Aluminium Alloy in sulphuric acid is studied by gravimetric method, thermometric method and IR studies. The experimental results revealed that extract has good inhibiting effect on the metal on 0.1M H2SO4. The protection efficiency increases with increasing inhibitor concentration to attain 90.80% at 1.0g/l. Balanites aegyptiaca is indicative of the adsorption of molecules leading to the formation of a protective layer on the surface of Aluminium Alloy. The efficiency decreases with increase in temperature. The adsorption of Balanites aegyptiaca extract is found to obey the Langmuir isotherm. The activation energies and enthalpies of the corrosion process of aluminium alloy in acidic medium using Balanites aegyptiaca extract were determined.

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Issue Publication: April 15, 2022