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dc.contributor.authorNkiko, Mojisola O.-
dc.contributor.authorBamgbose, Janet T.-
dc.identifier.citationNkiko, M. O., & Bamgbose, J. T. (2011). Corrosion Inhibitive Effect of Ocimum Gratissimum Extract on Zinc-Aluminium Alloy in Hydrochloric Acid. Portugaliae Electrochimica Acta, 29(6), 419-427.en_US
dc.description.abstractThe inhibitive effect of Ocimum gratissimum by seed extract on the corrosion of zinc-aluminium (ZA) alloy in 2 M hydrochloric acid (HCl) solution has been studied using gravimetric methods. Inhibition increases with concentration of extract but decreases with temperature. This observation implies that Ocimum gratissimum seed extract is an effective and non toxic inhibitor of the corrosion of zinc-aluminium alloy. Adsorption of the extract on the surface obeyed the Freundlich adsorption isotherm. The calculated rate constant (k) shows a first order kinetics in the absence and presence of the inhibitor. The kinetic parameter B, measured for the reaction has a high negative value which implies that Ocimum gratissimum becomes more effective as the temperature increases. Synergistic effect of halide additives shows an increase in the efficiency of the extract. However synergism parameter shows that synergism of halide additives decreases with increased concentration of inhibitor.en_US
dc.publisherSociedade Portuguesa de Electroquímicaen_US
dc.subjectCorrosion inhibitoren_US
dc.subjectGravimetric methodsen_US
dc.subjectInhibitor efficiencyen_US
dc.subjectOcimum gratissimumen_US
dc.titleCorrosion Inhibitive Effect of Ocimum Gratissimum Extract on Zinc-Aluminium Alloy in Hydrochloric Aciden_US
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