摘要:Alumina layers formed by anodization of alumi-nium in an electrolyte had been studied and used in com-mercial processes over the last six decades [1]. There aretwo types of anodic alumina, the non porous barrier-typeoxide and porous oxide, according to the nature of the elec-trolyte used. In this paper, two different types of anodizingwere used to obtain porous alumina films, namely sulfuricanodisation (SA) and hard anodisation treatment (HA),which are widely used for protection against corrosion,decorative aspect and wear resistance.