METHOD OF PROTECTION AGAINST WEARING OF THE THERMOSTRUCTURAL DETAIL FROM THE COMPOSITE MATERIAL WITH A CERAMIC MATRIX, COATING AND DETAIL OBTAINED BY THIS METHOD

摘要

1. A method of protection against wear of a thermostructural part made of a composite material with a ceramic matrix, characterized in that a) a mixture is prepared, including silica gel, a powder of ceramic refractory silica and / or alumina material and water; b) at least one layer is applied to the parts mixture; c) carry out the drying of the layer; and d) the part is heated to a temperature above 1000 ° C, which allows the layer to be baked and an enamel coating to be formed having a thickness of about 200 μm. 2. The method according to claim 1, characterized in that the mixture is applied to the outer layer of the part containing silicon carbide (SiC) and / or boron carbide (BC). The method according to one of claims 1 or 2, characterized in that a ceramic refractory material belonging to the group of substances including alumina silicates, aluminum silicates and alumina is introduced into the mixture. The method according to claim 1, characterized in that mullite is introduced into the mixture as a ceramic refractory material. The method according to claim 1, characterized in that phosphoric acid is also added to the mixture. The method according to claim 1, characterized in that before step d) the surface of the layer is ground with a pumice stone with the addition of an abrasive containing boron nitride. A protective coating against wear of a thermostructural part made of a composite material with a ceramic matrix, characterized in that it is filled in accordance with the method according to claims 1-6.8. A protective coating against wear of a thermostructural part made of a composite material with a ceramic matrix, characterized in that it is an enamel containing refractory substances of silica and / or alumina character and has a thickness of about 200 μm. 9. Coating according to claim 8, characterized in that