On polarization characteristics and corrosion weight loss of Al-Cr alloys

Abstract

The electrochemical measurements and immersion corrosion test in 0.1 M NaCl solution has been carried out to examine the effect of chromium on aluminium. The weight loss of Al-Cr alloys was unaffected by content of chromium (0.151.09%). Corrosion morphology of Al-Cr alloys was a type of exfoliation corrosion. Corrosion behaviors of Al-Cr alloys were explaned by galvanic corrosion model which has three linear parameters, difference in corrosion potentials, resistances of anodic polarization and cathodic polarization.