NOVEL HYBRID MATERIALS WITH ADDED-VALUE FUNCTIONALITIES FOR APPLICATIONS IN EXTREME ENVIRONMENTS

Reference	Presenter	Authors (Institution)	Abstract
09-027	Frederic Monteverde	Monteverde, F.(National Research Council of Italy); Sciti, D.(National Research Council of Italy); Zoli, L.(National Research Council of Italy); Saraga, F.(National Research Council of Italy);	Ceramic matrix composites (CMCs) made of carbon (Cf) or silicon carbide (SiCf) are widely used as material for aeronautical and space applications. Unfortuntely Cf/C composites do not have alone enough erosion resistance while silicon-based ceramics, SiCf/SiC or Cf/SiC composites, suffer extensive ablation due to the volatilization of silica, primary reaction product once exposed to oxidizing environment at elevated temperature. In recent years, the studies on Ultra-High Temperature Ceramics (UHTCs) have gained increasing attention because of an unrivalled erosion resistance at temperatures up to and above 2200 K, though they still possess poor thermal shock resistance, typical of brittle ceramics. Therefore, novel materials with added-value functionalities in highly corrosive environments must be conceived to overcome present technological limits. The large collaborative EU-funded project C3HARME aims at combining the best features of CMCs and UHTCs to design, develop, manufacture and test a new class of Ultra-High Temperature Ceramic Matrix Composite (UHTCMCs) with self-healing capabilities. The present contribution aims primarily at providing a general outlook of the characterization methodologies devoted to determine the self-healing ability of such an innovative class of UHTCMCs.
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