超高温材料及其复合结构研究进展

he ultra-high-temperature materials (such as ZrB2/SiC ceramics) are the important component materials of the sharp edge thermal protection structure for the hypersonic vehicles, whose high temperature mechanical properties and thermo-mechanical coupling behaviors are directly related to the safety and the reliability of the hypersonic reentry vehicles. When the hypersonic reentry vehicles enter into the orbit or return to the ground, its tip nose complex structure will be suffered from harsh aerodynamic loads and aerodynamic heating. The temperature at the tip of the nose cone will elevate at several thousand K, which leads to the complicated relationships among the internal complex stress state of the nose cone, the failure mode and the thermal ablation coupled field.