Thermal shock resistance of continuous carbon fiber reinforced ZrC based ultra-high temperature ceramic matrix composite (C/C-ZrC) from ultra high temperatures (particularly > 1500 °C) to the room temperature was evaluated using a novel self-developed equipment with high heating-cooling rates in controllable atmosphere. Residual strength and mass variation of the as-prepared composite under different thermal shock cycles and temperatures were tested to characterize the thermal shock resistance. Flexural strength of the composite slightly decreases initially without obvious weight loss below 1300 °C, while it decreases by relatively high values at 1300–1900 °C and then sharply decreases over 1900 °C with obvious increase of weight loss. Microstructure of the thermally shocked specimens was examined to reveal the thermal shock damage. Matrix cracking, interfacial debonding and matrix pores were clearly observed, which were the main reasons for the strength degradation of the composite thermally shocked for different cycles and temperatures.

使用新型的自行研发的高温度设备，评估了连续碳纤维增强的ZrC基超高温陶瓷基复合材料（C / C-ZrC）从超高温（尤其是> 1500°C）到室温的抗热震性。可控气氛中的加热-冷却速率。测试了所制备复合材料在不同热冲击循环和温度下的残余强度和质量变化，以表征其抗热冲击性能。复合材料的弯曲强度最初在1300°C以下略有下降，而没有明显的失重，而在1300–1900°C时则下降相对较高的值，然后在1900°C时急剧下降，且失重明显增加。检查了热冲击试样的微观结构，以揭示热冲击损伤。