Method of fabricating a friction part based on c/c composite material

A method of fabricating a friction part based on carbon/carbon composite material, the method comprising:

• making a fiber preform out of carbon fibers;
• densifying the preform with a carbon matrix, densification being performed in a plurality of separate stages, and during the fabrication process, introducing ceramic particles into the partially densified preform, wherein the introduction of ceramic particles takes place after a first stage of densifying the fiber preform with the carbon matrix and before the end of densifying with the carbon matrix, and comprises impregnating with a colloidal solution of at least one ceramic compound, or impregnating with a sol-gel type solution containing at least one ceramic compound precursor, followed before continuing with the densification by means of the carbon matrix, by a treatment for transforming the precursor into a ceramic compound by reacting with the carbon of the matrix without complete transformation into carbide,
• wherein in order to obtain ceramic compound particles having an average size of less than 250 nm, the ceramic compound constituting the particles being at least one compound of an element selected from titanium, yttrium, tantalum, and hafnium, and being selected from oxides, nitrides, and mixed oxide, carbide, and/or nitride compounds that do not react with carbon at a temperature lower than 1000° C. and that have a melting point higher than 1800° C.