Corrosion of 1060, 1100 and 5052 aluminium alloys in aqueous orthophosphoric acid

Abstract

Corrosion behaviour of 1060, 1100 and 5052 aluminium alloy in orthophosphoric acid of different concentrations has been investigated by weight loss and potentiostatic polarization technique at various temperatures. Corrosion rate is found to increase with increasing the acid concentration, temperature and immersion period. On the basis of their corrosion rates, the corrosion resistance of aluminium alloys may be graded as 1100 > 1060 > 5052.