Mecaprotec Industries

Centre National De La Recherche Scientifique

Airbus Operations Gmbh

Université Paul Sabatier (toulouse Iii)

Pierre Bares

Jean-Pierre Bonino

Florence Ansart

Olivier Brucelle

Julien Esteban

Cedric Stephan

Celine Gazeau

Sylvain Bruet

Paul Dedieu

Philippe Combes

Laurent Arurault

Viviane Turq

Jean-Jacques Rousse

Pascal Lenormand

David Pedelmas

Claude Rossignol

Kevin Klepman

Marie Gressier

Rudina Bleta

Elodie Xuereb

Céline Gazeau

Cédric Stephan

Caroline Cros

Olivier Jaubert

Marie-Joëlle Menu

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&#xb0; 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 &#x3bc;m and/or a layer weight of 20 to 150 mg/dm.

Method for anodizing parts made of an aluminum alloy

A method for surface treatment of a part made of aluminum, magnesium, or one of the alloys thereof, to protect the part from corrosion. The method comprises consecutively immersing the part in a first aqueous bath containing a corrosion-inhibiting metal salt and an oxidizing compound, and a second aqueous bath containing an oxidizing compound and a corrosion-inhibiting rare-earth salt. The method can be carried out for the chemical conversion of aluminum or the alloys thereof, and of magnesium or the alloys thereof, on parts that have not been previously treated, or after anodizing the part to seal the anodic layer.

Method for the surface treatment of parts made of an aluminum or magnesium alloy

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Mondavezan, France

Pierre Bares