Potentiodynamic polarization studies of Cefadroxil and Dicloxacillin drugs on the corrosion susceptibility of aluminium AA6063 in 0.5 M nitric acid
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The inhibition effectiveness of Cefadroxil (C) and Dicloxacillin (D) drugs on aluminium in0.5 M nitric acid solution have been holistically studied using potentiodynamic polarizationtechniques, weight loss measurements, computational studies and structural character-ization. The structural characterizations were carried with the aid of scanning electronmicroscope equipped with energy dispersive spectrometer (SEM/EDS), optical microscope(OPM) and XRD. Potentiodynamic polarization test revealed the corrosion protectivenessand adsorbing ability of Cefadroxil and Dicloxacillin drugs on aluminium (Al). The mixedinhibitive characteristics of Cefadroxil and Dicloxacillin drugs were confirmed through theTafel plot, which further established their predominant effect on the anodic reaction asa result of Ecorrvalue shift to more positive sides. The combined effect of Cefadroxil andDicloxacillin drugs reduced the exchange in current density and corrosion rate drasticallyfrom 484 �A/cm2to 199 �A/cm2and 0.4502 mm/year to 0.2152 mm/year respectively. 44.4%increase in microhardness was achieved and Inhibition efficiency of 58.9% was accom-plished.
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T Technology (General), TJ Mechanical engineering and machinery