Tribological behaviour of composites made of carbon fibres and ceramic matrix in the Si–C system

Thanks to their low density, good thermal, mechanical and tribological properties, composites made of carbon fibres and carbon matrix (C/C) are particularly adapted to the manufacturing of aircraft brake discs. Several methods have been developed to improve their performance. For instance, the introduction of silicon carbide within the matrix notably increases the friction coefficient. While carbon fibres enhance the toughness of the matrix, silicon carbide shows high hardness, thermal stability and low chemical reactivity, leading to superior friction properties.