超高温陶瓷的研究进展

Progress on Ultra-High Temperature Ceramics

超高温陶瓷在极端环境中能够保持稳定的物理和化学性质,被认为是高超声速飞行器和大气层再入飞行器鼻锥和前缘最有前途的候选热防护材料。本文系统评述了超高温陶瓷(主要是过渡金属硼化物、碳化物和氮化物)在粉体合成、致密化、力学性能等方面的研究进展。对超高温陶瓷研究中存在的一些问题作出初步总结,希望对超高温陶瓷的进一步研究和应用起到积极的推动作用。

Ultra-high temperature ceramics （UHTCs） are regarded as the most promising thermal protective ma- terials for the nose and leading edge of hypersonic or re-entry vehicles due to their stability of physical and chemical properties in extreme environment. The progress on UHTCs is reviewed in detail, including powder synthesis, densifi- cation and mechanical properties. Also, some problems exist in the material studies are preliminarily summarized. It is expected that this review will provide some guidance for stimulating further research and practical applications of the UHTCs.