Patent ID: 9416059
Filing Date: 2016-08-16
CPC Classification: C04B,F16D

Claim Text:
1. A method of protecting a part made of porous materials containing carbon against oxidation when in use, including the presence of at least one alkali element M that catalyses the oxidation of carbon, the element M being selected from the group consisting of sodium and potassium, the method comprising impregnating the part with an impregnation composition in an aqueous medium free of titanium diboride and containing, in percentages by weight: 20% to 40% aluminum phosphate; 5% to 20% elemental titanium powder; 5% to 20% elemental boron powder; 5% to 20% of a potassium salt or a sodium salt; and water, to form in the presence of oxygen and of said at least one alkali element M that catalyses the oxidation of carbon, at least one P—O—Ti-M type association bonded by boron oxide B 2 O 3 and trapping the at least one element M.