Adsorption and corrosion inhibition properties of floxapen compound on the electrochemical characteristics of type-A5-series aluminium in sodium chloride solution Online publication date: Wed, 06-Jun-2018
by O.S.I. Fayomi; O.A. Bamgboye; B.M. Durodola; W.A. Inam; A.A. Daniyan
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 12, No. 5/6, 2017
Abstract: The inhibition performance of floxapen compounds on the electrochemical corrosion behaviour of A5 series aluminium in 3.5% NaCl acid solutions was studied through weight loss method and potentiodynamic polarisation test. The results obtained showed that the organic drug compound performed effectively in sodium chloride solutions with average floxapen compounds inhibition efficiency of 68% from weight loss and potentiodynamic polarisation test respectively. Results from corrosion thermodynamic calculations showed that the adsorption of floxapen compounds onto the aluminium was through chemisorption mechanism whereby the redox electrochemical progression responsible for corrosion initiation and the electrolytic transport of corrosive anions were concurrently suppressed. Adsorption of the compound was determined to obey the Langmuir and Frumkin isotherm model.
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