The Ideal Ceramic Fiber/Oxide Matrix Composite : How to Conciliate Antagonist Physical and Chemical Requirements?

Le Composite Idéal à Fibres et Matrice (Oxyde) : Comment Concilier des Qualités Physiques et Chimiques Contradictoires ?

Philippe Colomban (1) , Gwenaël Gouadec (1)

1 LADIR - Laboratoire de Dynamique Interactions et Réactivité

Starting with a short historical introduction, this paper deals with the search for the best materials to be used in ceramic composites. The reinforcement and oxide matrix must satisfy multiple - and often antagonist - requirements in terms of physical (failure resistance, damage tolerance) and chemical (thermal stability, corrosion resistance) properties. The best compromise is obtained by "control" of the interface or, if none forms "naturally", by specific coatings. We will illustrate the choice process with some examples (among which Lithium AluminoSilicate (LAS) composites) showing how "out of factory" short-term (airspace or military applications) and long term (civil air transportation, energy plants) specifications lead to different choices, the latter demanding careful assessment of corrosion issues.

Mots clés: composite materials; fibre; oxyde; SiC; microstructure; corrosion

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Philippe Colomban, Gwenaël Gouadec. Le Composite Idéal à Fibres et Matrice (Oxyde) : Comment Concilier des Qualités Physiques et Chimiques Contradictoires ?. Annales de Chimie - Science des Matériaux, 2005, 30 [6], pp.673-688. ⟨hal-00120372⟩