Physico-chemistry of interfaces in inorganic-matrix composites

The performances of metal matrix composites (MMCs) or ceramic matrix composites (CMCs) are usually limited by the characteristics of the fibre/matrix interface or more generally those of the interfacial zone. Concerning MMCs, the optimization of this zone involves control of the chemical reactivity between the reinforcement and the matrix, which constitute usually an out-of-equilibrium system. In the case of CMCs, it is possible to obtain a non-brittle material by associating two brittle components and to exhibit a good resistance to oxidation. The physical chemist is able to offer a significant contribution for solving these problems by acting on the reinforcement surface, the matrix composition or the manufacturing conditions of the composite.