Title of article :
EFFECT OF CHLORIDE IONS ON THE PASSIVE LAYER FOR THREE AL-ALLOYS AT PH=9
Author/Authors :
Hikmat, Naema A. University of Baghdad - College of Science - Department of Chemistry, Iraq , Farhan, Ahlam M. University of Baghdad - College of Science for Woman - Department of Chemistry, Iraq , Majed, Rana A. University of Technology - Department of Materials Engineering, Iraq
Abstract :
This work involves the study of the effect of chloride ion on the passive layer which is formed on the surface of three aluminium alloys (Al-Cu-Mg), (Al-Mg), and (Al-Zn). The concentrations of chloride ion used were (1x10^-3, 1x10^-2, 0.1 mol.dm^-3). The study was performed in 1x10^-5 mol.dm^-3 NaOH solution which was corresponded to pH value of (9). The data of polarization behaviour were calculated by Tafel extrapolation method and the comparison of this data in the absence and presence of chloride ions were discussed.
Keywords :
Effect of Chloride ions , Aluminium alloys , Corrosion of Al alloy , Polarization behavior
Journal title :
Al-Nahrain Journal Of Science
Journal title :
Al-Nahrain Journal Of Science
