Propriétés et utilisations des composites carbone - carbone

Société Européenne de Propulsion (SEP), B. P. 37, 33165 St-Médard-en-Jalles, (France).

Résumé

Les propriétés des carbone-carbone sont présentées en relation avec 3 grandes utilisations, dans les fusées, les freins et les biomatériaux. Un approfondissement des connaissances est nécessaire pour le comportement sous charges combinées, la fatigue, la fissuration, le frottement, la tenue à l'oxydation, la biocompatibilité et les relations entre comportements macroscopiques et structures internes.

Abstract

Carbon-carbon-properties are discussed together with three main uses: rockets, brakes and biomaterials. A need is identified for multiaxial tests botn on rheologies and on failure criteria, ivon-nnear model development is discussed for multidirectionnal materials, in connexion with the type of reinforcement. Good results have been obtained on fatigue and crack propagation tests. Biocompatibility has been shown to be surprisingly good, and hemocompatibility too. More work has to be made to understand all those properties, and relate them to the architecture and microstructures of materials. A trend is observed towards new composites made from carbon- carbon associated with other products.