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The effect of aqueous extract of UAE Neem (Azadirachta Indica) on the corrosion inhibition of carbon steel in 1.0MHCl solution was investigated electrochemically, and by weight-loss experiments at temperatures ranging from 303 to 343 K. The percentage inhibition increased with the increase of the concentration of the inhibitor. At a concentration of 2.0 g/L, the percentage inhibition reached about 87% at room temperature and 80% at 303 K. The percentage inhibition decreased with the increase of temperature. The thermodynamic parameters for the adsorption of this inhibitor on the metal surface were calculated using the Temkin adsorption isotherm. The aqueous Neem leaves extract was found to be an excellent potential corrosion inhibitor because of the high content of tannin content as well as the presence of a series of complex triterpene glycosides.

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BiographyIbrahim Abdel-Rahman was born in Bedya, Palestine in 1958. He is a lecturer at University of Sharjah since 2000. He was a lecturer at the Applied Science University (Jordan) (1994-2000). He was the head of chemistry Lab for quality control at the Arab Center for Pharmaceuticals and Chemicals Industries (Jordan) during (1991-1994).

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