Synergistic Effects of Oxidation and Load on SiC/BN/SiC Ceramic Matrix Composite Degradation at Intermediate Temperatures

Kaitlin Detwiler
SiC/BN/SiC ceramic matrix composites (CMCs) are desirable for use in the hot section of jet engines, where temperatures can reach 1200°C or higher. However, due to thermal gradients and backside cooling, many SiC/BN/SiC CMC components will experience intermediate temperatures ranging from 600-800°C. Oxidation mechanisms in this intermediate temperature range are not well understood. CMCs in this region will also experience micro-cracking arising from mechanical and thermal stresses, increasing pathways for oxidant ingress. The following standalone...
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