Abstract:
A method of treating a metal substrate with an anti-corrosion coating comprising at least the following steps: preparing a solution comprising particles of a precursor of the oxide, dipping at least one surface of the metal substrate into the prepared solution and then removing it from the solution, heat treating the surface of the metal substrate in order to generate oxide nanocrystals from the particles of the precursor and form the anti-corrosion coating, and forming a natural oxide layer between the metal substrate and the anti-corrosion coating, the natural oxide layer being enriched with elements from the oxide nanocrystals of the anti-corrosion coating.
Abstract:
A sol-gel method for producing an anti-corrosion coating consisting of at least one layer of an oxide on a metal substrate. A non-aqueous solution of a precursor of the oxide is prepared and deposited on one surface at least of the metal substrate in order to cover said surface at least partially with a film comprising the precursor of the oxide. Hydrolysis-condensation of the precursor of the oxide is carried out by exposing the film to a humid atmosphere in order to form an oxide network in the film. Then, a treatment for stabilizing the film on the surface of the substrate is carried out, followed by a heat treatment of the surface of the metal substrate in order to crystallize the network of oxide and form the anti-corrosion coating.
Abstract:
A sol-gel method for producing an anti-corrosion coating consisting of at least one layer of an oxide on a metal substrate. A non-aqueous solution of a precursor of the oxide is prepared and deposited on one surface at least of the metal substrate in order to cover said surface at least partially with a film comprising the precursor of the oxide. Hydrolysis-condensation of the precursor of the oxide is carried out by exposing the film to a humid atmosphere in order to form an oxide network in the film. Then, a treatment for stabilizing the film on the surface of the substrate is carried out, followed by a heat treatment of the surface of the metal substrate in order to crystallize the network of oxide and form the anti-corrosion coating.