Oxidation protection of a porous composite material containing carbon by aqueous impregnation with a

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A part made of a porous material containing carbon, in particular made of composite material C/C, [...] against oxidation by impregnation with a composition in aqueous medium containing at least phosphorus [...], titanium or a titanium compound other than titanium diboride, and boron or boron [...] other than titanium diboride, to form, in the presence of oxygen and at least semipermanently M alkali or alkaline earth metal catalyst oxidation of carbon, at least one association [...] -O-Ti-M-bound boron oxide B2O3 and trapping the member m.