Messier-bugatti-dowty

Rbnano

Safran

Safran Helicopter Engines

Safran Landing Systems

Centre National De La Recherche Scientifique

Université Paul Sabatier (toulouse Iii)

Mecaprotec Industries

Julien Esteban

Jean-Pierre Bonino

Florence Ansart

Fabrice Crabos

Julien Gurt Santanach

Pierre Bares

Jean-Luc Rehspringer

Jean-Philippe Ruetsch

Pascal Lenormand

Roland Rodrigue Mafouana

Jean-Baptiste Cambon

Rodrigue Roland Mafouana

Olivier Jaubert

Marie-Joëlle Menu

Marie Gressier

Rudina Bleta

Elodie Xuereb

Céline Gazeau

Subjecting an aluminum or aluminum alloy substrate to anti-corrosion and anti-wear treatment that is applicable in particular in the field of aviation for protecting certain mechanical parts of airplanes or helicopters that are subjected simultaneously to corrosion and to wear, including applying to the substrate, a sol-gel treatment step forming a sol-gel layer; and after the sol-gel treatment step, a hard oxidation step forming a hard oxide layer.

Method of treatment against corrosion and against wear

The invention relates to a process for treating a metal alloy part, characterized in that it comprises the following steps: &#x2014;producing a stock formulation by mixing, in equal molar parts of silicon, an alcoholic solution of hydrolysed epoxysilane and an alcoholic solution of hydrolysed aminosilane, &#x2014;mixing the stock formulation with a suspension comprising conductive nanowires in an amount by weight of between 0.1% and 10% relative to the total weight of the stock formulation in order to obtain a dilute formulation, and &#x2014;depositing the dilute formulation on the part in order to obtain the coating.

Development of a sol-gel anticorrosion treatment

A method of coating the surface of a metal substrate includes a) applying a first composition on the surface of a metal substrate, the first composition being a solution comprising a liquid medium including sol-gel precursors of alcoxysilane type or of metallo-organic type; b) subjecting the first composition to first heat treatment to form an anchor layer on the metal substrate in which the sol-gel precursors are bonded to the metal substrate, a first temperature being imposed during the first heat treatment that is sufficient to eliminate all or part of the liquid medium and to encourage the bonding of the sol-gel precursors to the metal substrate; and c) applying a second composition on the anchor layer. The second composition includes coating compounds to obtain a coating on the anchor layer by forming bonds between the sol-gel precursors and the coating compounds.

Method of coating the surface of a metal substrate

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Strasbourg, France

Julien Esteban