Evaluation of the Inhibitive Effect of Ibuprofen Drug on the Acidic Corrosion of Aluminium 6063 Alloy

Abstract

This research examined the corrosion inhibition potency of inhibitive Ibuprofen drug (IID)on aluminium 6063. The effect of the inhibitive drug was tested in 0.5 M of H2SO4 solutionusing potentiodynamic method. The concentration of IID was mixed to the acidic mediumin 0, 5, 10, 15 and 20 ml respectively. The polarization experiment shows IID adsorbed onaluminium specimens. Increase in IID concentration decreases corrosion rate of aluminiumspecimens. Maximum inhibitive efficiency of 80.58 % and further studies on the inhibitoryeffect of the drug inhibitor revealed that Freundlich isotherm displayed a regressioncoefficient value of 0.7893 while Langmuir isotherm exhibits a regression coefficient valueof 0.8864. These values of regression establish the reliability of IID as inhibitor, whichshows that IID can be used as inhibitor corrosion of aluminium in aggressive environmentsuch as marine and petrochemical industries where protection of aluminium is a necessity.