Advances in the processing and characterization of UHTC-Composites for Aerospace

Reference Presenter Authors
14-035 Diletta Sciti Sciti, D.(National Research Council of Italy); Vinci, A.(National Research Council of Italy); Materials for aeronautical and space applications largely involve ceramic matrix composites, CMCs, made of carbon or silicon carbide. However, C/C composites suffer from poor erosion resistance while silicon-based ceramics, SiC/SiC or C/SiC composites, may undergo strong ablation due to the formation and volatilization of silica. In recent years, Ultra-High Temperature Ceramics, UHTCs, have shown outstanding erosion resistance at temperatures up to 2000°C or even higher but they still cannot resist to thermal shocks and damage. Therefore, the quest for advanced materials with temperature capability in highly corrosive environments and able to resist several launches and re-entries is very challenging. The 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. Applications selected to implement the new materials are near-zero erosion nozzles and near- zero ablation TPS tiles. This talk aims at giving an update on the most important characterization activities of the new materials produced including mechanical tests at room and high temperature, arc-jet and free-jet tests at 2000°C or higher.
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