Abstract: A multilayer thermoformable film to protect the surface of a workpiece includes an underlayer having first and second faces. The underlayer is made from an adhesive material configured to adhere to the surface of the workpiece by the first face. At least one layer of polymer material is attached to the second face of the adhesive underlayer. The layer of polymer material is resistant to erosion by solid particles and to erosion by liquid particles. It is formed from a polymer material chosen from a polyurethane, a polyether ether ketone and a polyethylene having a very high molecular weight, with a Shore D hardness of between 50 and 65 D. A method of surface protection of the workpiece includes thermoforming the film in a shape adapted to match the shape of at least a portion of the workpiece and applying the film thermoformed onto the surface of the workpiece.

Abstract: A device for protecting an airfoil element made of a complex comprising a polymer film, a metal strip deposited on a part of the polymer film and an adhesive element to attach the polymer film on the airfoil element. The polymer film forms a protection against sand abrasion. The metal strip forms a protection against water abrasion of the airfoil element on which the complex is attached.

Abstract: A method for coating a surface comprises applying a layer of coating composition onto the surface, mechanically forming parallel ribs on the layer, and simultaneously polymerizing the layer with ultraviolet radiations. The coating composition comprises a mass percentage of urethan-acrylate oligomer, with an average molar mass in number between 1000 and 5000 g·mol?1, between 35% and 75%. The coating composition further comprises a mass percentage of a diluting agent, copolymerizable with urethan-acrylate oligomers, between 15% and 60%, and a mass percentage of pyrogenic silica between 0.5% and 5%.

Abstract: A multilayer thermoformable film to protect the surface of a workpiece includes an underlayer having first and second faces. The underlayer is made from an adhesive material configured to adhere to the surface of the workpiece by the first face. At least one layer of polymer material is attached to the second face of the adhesive underlayer. The layer of polymer material is resistant to erosion by solid particles and to erosion by liquid particles. It is formed from a polymer material chosen from a polyurethane, a polyether ether ketone and a polyethylene having a very high molecular weight, with a Shore D hardness of between 50 and 65 D. A method of surface protection of the workpiece includes thermoforming the film in a shape adapted to match the shape of at least a portion of the workpiece and applying the film thermoformed onto the surface of the workpiece.

Abstract: A device for protecting an airfoil element made of a complex comprising a polymer film, a metal strip deposited on a part of the polymer film and an adhesive element to attach the polymer film on the airfoil element. The polymer film forms a protection against sand abrasion. The metal strip forms a protection against water abrasion of the airfoil element on which the complex is attached.

Abstract: Sol for the sol-gel coating of a surface, said sol comprising, in percent by weight: a)—3% to 30%, preferably 5% to 20%, more preferably 7% to 15%, especially 8% to 14%, more especially 10% to 13%, for example 10.8% or 12%, of at least one organometallic compound of zirconium, aluminium or titanium; b)—5% to 50%, preferably 5% to 40%, more preferably 10% to 40%, especially 15% or 20% to 30%, for example 22% or 23%, of at least one organosilane compound; c)—1% to 15%, preferably 2% to 10%, more preferably 3% to 8%, for example 5%, of at least one compound selected from acids, bases, glycols and ethoxyethanol; d)—the remainder to 100% of demineralized or distilled water; the total amount of a) and b) being greater than 30%, preferably greater than 31.2%; 31.5%; 32%; or 33%, more preferably greater than 35%, especially greater than 40%, more especially greater than 50%.

Abstract: A method for coating a surface comprises applying a layer of coating composition onto the surface, mechanically forming parallel ribs on the layer, and simultaneously polymerizing the layer with ultraviolet radiations. The coating composition comprises a mass percentage of urethan-acrylate oligomer, with an average molar mass in number between 1000 and 5000 g·mol?1, between 35% and 75%. The coating composition further comprises a mass percentage of a diluting agent, copolymerizable with urethan-acrylate oligomers, between 15% and 60%, and a mass percentage of pyrogenic silica between 0.5% and 5%.

Abstract: The present invention relates to coating compositions for metallic devices, especially for aircrafts, to provide protection against corrosion. The coating composition comprises ceramic particles having at least one active material substantially homogeneously distributed throughout each particle. The active material being releasable in the presence of a liquid by solubilization into the liquid.

Abstract: The invention relates to a polyelectrolyte-based nanostructured anticorrosion coating, comprising at least one main compartment which comprises: a polyelectrolyte multilayer (1) doped with at least one anticorrosion agent (4), and an upper multilayer (2a) acting as a barrier to the diffusion of the dopants, and whose upper surface corresponds to the upper surface of the main compartment, and optionally one or more secondary compartments, each comprising: a polyelectrolyte multilayer (8; 11) doped with at least one functional agent other than an anticorrosion agent, and an upper multilayer (2b; 2c) acting as a barrier to the diffusion of the dopants, and whose upper surface corresponds to the upper surface of the secondary compartment. The invention also relates to a structure comprising a metallic substrate and such a coating, and also to its use in the aeronautical or aerospace field and to the process for preparing it.

Abstract: The invention relates to a structure comprising: at least one mesostructured layer, prepared by a sol/gel method from at least one specific metallic molecular precursor in the presence of a specific texturing agent and a metal substrate. The invention further relates to the method for production and use thereof in aeronautics and aerospace.

Abstract: The present invention relates to a structure comprising: at least one mesostructured layer prepared by the sol-gel route from at least one specific molecular metallic precursor in the presence of an amphiphilic surfactant, and a metal substrate. It also relates to its process of preparation and to its use in the aeronautical or aerospace field.

Abstract: The present invention relates to the use of a nanostructured material, as a protective coating for metallic surfaces, said nanostructured material comprising functionalized nano-building blocks and a polymer or hybrid organic/inorganic matrix. It also relates to a particular nanostructured material in which the matrix is prepared from at least three silicon alkoxides.

Abstract: Sol for the sol-gel coating of a surface, said sol comprising, in percent by weight: a)—3% to 30%, preferably 5% to 20%, more preferably 7% to 15%, especially 8% to 14%, more especially 10% to 13%, for example 10.8% or 12%, of at least one organometallic compound of zirconium, aluminium or titanium; b)—5% to 50%, preferably 5% to 40%, more preferably 10% to 40%, especially 15% or 20% to 30%, for example 22% or 23%, of at least one organosilane compound; c)—1% to 15%, preferably 2% to 10%, more preferably 3% to 8%, for example 5%, of at least one compound selected from acids, bases, glycols and ethoxyethanol; d)—the remainder to 100% of demineralized or distilled water; the total amount of a) and b) being greater than 30%, preferably greater than 31.2%; 31.5%; 32%; or 33%, more preferably greater than 35%, especially greater than 40%, more especially greater than 50%.

Abstract: The invention relates to a novel nanostructured material comprising at least one nano-building block based on silica, alumina, zirconia, titanium oxide or cerium (IV) oxide, functionalized with at least two functionalizing agents of formula (1), (2) or (3): Z4?xSi((R?)p—F)x ??(1) Z4?x?y(F?—(R?)p)ySi((R?)p—F)x ??(2) Zn?ma?mb(F?-L)maM(L-F)mb , ??(3) and its application in the aeronautics or aerospace field as a protective coating for metallic surfaces.