陶瓷基复合材料超高温冷热冲击试验  

Ultra-temperature Cooling and Thermal Shock Test for Ceramic Matrix Composite

作　　者：刘宁夫 蒋军亮[1] 丛琳华 田敏 LIU Ning-fu;JIANG Jun-liang;CONG Lin-hua;TIAN Min(Aircraft Strength Research Institute of China,Xi'an 710065,China)

机构地区：[1]中国飞机强度研究所

出　　处：《科学技术与工程》2019年第28期401-405,共5页Science Technology and Engineering

基　　金：空装专用技术项目(30307030201)资助

摘　　要：传统的水淬法和两厢法无法满足陶瓷材料热冲击试验的要求,使用自行研制的超高温冷热冲击试验装置,对氧化锆陶瓷试件进行了气动加热状态下的材料单面冷热冲击试验研究,实现最高升温速率30℃/s,最高可控降温速率15℃/s,最高温度1 600℃,研究过程中采用有限元方法对试验装置的加热和冷却性能进行了数值计算,并对氧化锆陶瓷试件进行了气动加热地面模拟试验,验证了超高温冷热冲击试验装置和数值模拟方法的可信性和有效性,为其在材料冷热冲击试验中的工程应用提供了设计依据。Traditional water quenching roll and two-chamber method could not meet the requirement of the thermal shock test for ceramic materials. By using the self-developed ultra-temperature cooling and thermal shock device,the cooling and thermal test of Zr O2 ceramic specimens under aerodynamic heating environment was carried out. The highest heating rate in this research was 30 ℃/s,and the highest controlled cooling rate was 15 ℃/s. Besides,the maximum target temperature could reach up to 1 600 ℃ . The finite element method was also used to analyze the performance of the cooling and thermal shock device. The test results show that the self-develop device and the numerical analysis methods were credible and effective,which can be used as design basis in the cooling and thermal shock experiments for standard test samples or structural parts.

关 键 词：冷热冲击试验 辐射加热 对流冷却 有限元法 

分 类 号：V416.4[航空宇航科学与技术—航空宇航推进理论与工程]