Abstract
Advanced 2D carbon fiber reinforced silicon carbide (C/SiC) composites are highly advantageous, owing to the excellent temperature tolerance of carbon and the good oxidation resistance of SiC. Therefore, they have been regarded as the most promising thermal structural materials that operate in thermal shock environments. However, studies pertaining to their thermomechanical properties at elevated temperatures are sparse. The understanding of the structural design and thermal management of ceramic matrix composites remains rooted in the idea of traditional bulk materials. In this study, for the first time, the thermal-mechanical-oxidation coupled behaviors of a 2D plain-weave C/SiC material are investigated on an in-house built testing machine that is heated via induction from room temperature to 1400 °C in air. The high-temperature thermal properties are evaluated based on the proposed models and available experimental data. The thermal shock resistance in the simulated environments is subsequently studied. Safe and hazardous thermal shock conditions are identified. Improved methods for structural design and thermal management are proposed.
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