Abstract: A method for anodizing a part made of aluminum or an aluminum alloy by immersing the part in an aqueous bath essentially comprising sulfuric acid at a concentration of 150 to 250 g/L and at a temperature of 5 to 25° C. A DC voltage according to a voltage profile comprising a voltage increased at a rate of 1 to 32 V/min is applied to the part. The voltage is maintained at a plateau voltage value of 12 to 20 V for a duration sufficient for obtaining, at the surface of the part, an anode layer having a thickness of 3 to 7 ?m and/or a layer weight of 20 to 150 mg/dm2.

Abstract: A method for anodizing a part made of aluminum or an aluminum alloy by immersing the part in an aqueous bath essentially comprising sulfuric acid at a concentration of 150 to 250 g/L and at a temperature of 5 to 25° C. A DC voltage according to a voltage profile comprising a voltage increased at a rate of 1 to 32 V/min is applied to the part. The voltage is maintained at a plateau voltage value of 12 to 20 V for a duration sufficient for obtaining, at the surface of the part, an anode layer having a thickness of 3 to 7 ?m and/or a layer weight of 20 to 150 mg/dm2.

Abstract: A method for making a porous structure, includes producing, by anodization of an aluminum substrate, an outer surface layer (3), part of the thickness of which is formed by an ordered porous structure (7), characterized in that it includes an anodization step on a smooth aluminum substrate for a duration sufficient for obtaining a thickness of ordered porous structure (7). The method further includes removing by mechanical machining a portion of the thickness of the layer (3) formed by anodization, the thickness portion extending from the outer surface of the layer (3) formed by anodization, while maintaining an ordered porous structure (7) with a non-zero thickness, so that the ordered porous structure defines the free outer surface of the residual layer.