摘要
ZrB_2基超高温陶瓷具有高熔点、较高的强度、高热导率等优点,是一种性能优异的高温结构材料,成为高超声速飞行器关键热部件的首选候选材料。介绍了ZrB_2的基本性能,以及ZrB_2基超高温陶瓷材料的抗热震性能及改进情况,讨论了表面热交换系数梯度对材料热震行为的影响,对超高温陶瓷材料的热震行为和热震失效机制有了新的认识,为材料在实际服役条件下的性能预测提供参考,并为材料抗热震性能的提高提供了新的研究思路。
ZrB2-based ultra-high temperature ceramics （UHTCs） are promising candidates for high-temperature applications of thermal protection systems （TPS） of hypersonic re-entry space vehicles due to their superior comprehensive properties of high melting points, good strengths and high thermal conductivities. The information of ZrB2 were represented. The thermal shock resistance and performance improvements of ZrB2-based UHTCs were summarized. The effect of surface heat transfer coefficient gradient on the thermal shock failure was discussed. This review provides some complementary information for understanding the thermal shock behavior, gives some comments on predicting materials performance in applications, and offers research ideas of improving materials performance as well.
作者
陈丽敏
索相波
王安哲
张政军
CHEN Limin;SUO Xiangbo;WANG Anzhe;ZHANG Zhengjun(State Key Laboratory of New Ceramics and Fine Processing,School of Materials Science and Engineering,Tsinghua University,Beijing 100084,China;Key Laboratory of Advanced Materials,School of Materials Science and Engineering,Tsinghua University,Beijing 100084,China;Center for Composite Materials,Harbin Institute of Technology,Harbin 150001,China)
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2018年第9期1235-1243,共9页
Journal of The Chinese Ceramic Society
基金
挑战计划(tz2016004)资助
关键词
超高温陶瓷
二硼化锆
抗热震
热震失效机制
ultra-high temperature ceramics
zirconium diboride
thermal shock resistance
thermal shock failure mechanism
