ABSTRACT In the present article the following subjects are presented: - A new method of electroplating aluminium - About two successive layers of Al2O3 with different microstructure on the known oxide produced by anodic oxidation on Aluminium metal, their sorptive and catalytic properties and their ageing; a new catalytic reactor from anodically oxidized Aluminium - Protection of an aluminium alloy from S.C.C. by properly oriented anodic coatings and interpretation of the formation of the active path; dependence of the time to failure, from the orientation of the notches and of the stress direction - n-semiconductor Al2O3 as anticorrosive pigments for metals (in known anticorrosive paints) and for marbles - Corrosion and protection of concrete rebars - Prediction of concrete cracking from the corrosion of rebars - Standardization of reinforced concrete specimens - Application of cathodic protection using atmospheric electricity - Diffusion of Fe2+ through protective coatings for steel - Case studies
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