Browsing by Author "BUSARI, Y. O."
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Item CORROSION INHIBITION OF AISI 1007 STEEL IN HYDROCHLORIC ACID USING CUCUMIS SATIVUS (CUCUMBER) EXTRACTS AS GREEN INHIBITOR(Faculty of Engineering Hunedoara, University of Politehnica, Timisoara., 2018-10) SHUAIB-BABATA, Y. L.; BUSARI, Y. O.; YAHYA, R. A.; ABDUL, J. M.The inhibiting effect of cucumber peel and seed extracts on corrosion of AISI 1007 steel in 2M solution of Hydrogen Chloride (HCl) at ambient temperature was studied using gravimetric and electrochemical measurements (TAFEL polarization). It was observed that corrosion rates reduced with increase in the extracts’ concentration, and inhibition efficiency (IE%) increased with the concentration. The study revealed that the cucumber extracts possessed good inhibiting efficiency. Though, the cucumber peel extract’s efficiency was greater than that of the seed (oil) extract during gravimetric measurement. The highest inhibition efficiency (IE) of 86.63% was achieved using the cucumber peel extract as inhibitor with 1.0 g/l concentration, while cucumber seed (oil) extract recorded 39.23%. The electrochemical measurements (TAFEL polarization) results revealed that the corrosion current density decreased with the increased in the concentration of the cucumber peel extract. The decreased in corrosion was due to increased blocking of the metal surface by adsorption of the leaf extract. Therefore, the extracts could be used as a green inhibitor to the corrosion of AISI 1007 steel in the hydrochloric acid medium as a replacement for toxic inhibitors.Item MODELLING OF CORROSION INHIBITION OF CUCUMBER PLANT EXTRACTS ON AISI 1007 STEEL IN SEAWATER(Faculty of Engineering, “Dunarea De Jos” University of Galati Romania, 2022-03-15) SHUAIB-BABATA, Yusuf Lanre; IBRAHIM, H. K.; BUSARI, Y. O.; MAHAMOOD, R. M.; ABDULRAMAN, S. O.; AMBALI, I. O.; ABDULQADIR, L. B.; AREMU, N. I.; EJIKO, S. O.Adsorption Models with the application of corrosion experimental data is a very popular mechanism to predict various inhibitive systems. The effective modelling and interpretation of adsorption isotherms reliably determine the level of accuracy ofadsorption processes. This study aims to apply the adsorption models and inhibitive mechanism of Cucumber Peel Extract (CPE) and Cucumber Seed Oil (CSO) tocorrosion of AISI 1007 steel grade in the saline medium using both the electrochemical (Tafel Polarisation) and non-electrochemical (Weight Loss) techniques. The chemical composition of AISI 1007 andthephytochemical properties of studied extracts weredetermined. Consideration was given to Langmuir and Dubinin-Radushkevich Isotherm models (D-RIM) to study the inhibitive properties of CPE and CSO on AISI 1007 steel in an aggressive medium. The result of inhibition efficiency from weight loss measurement showed maximum inhibitions of 94.44 % and 95.44 % with 1.0 g/L concentration of CPE and CSO respectively in seawater medium. The result ofthestudied extract at 25 °C in seawater showed thatthecorrosion current density of AISI 1007 steel decreased and increased in the inhibition efficiency with 87.33% and 94.67% for CPE and CSO respectively. The negative value of ΔGads was greater than 20 kJ/mol and was obtained as a resultof electrostatic interaction between the adsorbed inhibitor molecules and the ions/atoms on the metal surface. The studied inhibitors were confirmed to be mixed organic corrosion inhibitors type. The values of E and maximum surface coverage (θmax)for the two measurements are satisfactorily in acceptable agreement as similar to the range of value obtained for inhibition efficiency