耐1200℃陶瓷瓦重复使用性能  

High-temperature reusability of ceramics tile resistant to 1 200 ℃

作　　者：陈思安 李海玉 迟蓬涛[2] 高扬 李俊宁 解维华[4] CHEN Sian;LI Haiyu;CHI Pengtao;GAO Yang;LI Junning;XIE Weihua(College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China;Science and Technology on Space Physics Laboratory,China Academy of Launch Vehicle Technology,Beijing 100076,China;National Key Laboratory of Science and Technology on Advanced Functional Composites Technology,Aerospace Research Institute of Materials&Processing Technology,Beijing 100076,China;School of Astronautics,Harbin Institute of Technology,Harbin 155006,China)

机构地区：[1]国防科技大学空天科学学院,湖南长沙410073 [2]中国运载火箭技术研究院空间物理重点实验室,北京100076 [3]航天材料与工艺研究所先进功能复合材料技术重点实验室,北京100076 [4]哈尔滨工业大学航天学院,黑龙江哈尔滨150006

出　　处：《国防科技大学学报》2021年第4期69-75,共7页Journal of National University of Defense Technology

基　　金：国家重点基础研究发展计划资助项目(2015CB655200);特种环境复合材料技术国防科技重点实验室基金资助项目(JCKYS2020603C016)。

摘　　要：针对目前比较成熟的耐1 200℃陶瓷瓦开展了1 200℃多次重复热处理,研究了陶瓷瓦的结构和性能演变行为和重复使用性能。结果表明:1 200℃热处理20次后,耐1 200℃陶瓷瓦表现出良好的宏观热稳定性;重复热处理过程中,纤维间烧结,黏接熔融和石英纤维析晶及晶粒长大,使纤维直径发生变化,出现缩颈,进而导致了Z向收缩,收缩率达14%,从而使得压缩强度略有增大,隔热性能降低;经过1 260℃、11次单面辐射加热后,Z向收缩率为5.58%,隔热效果降低了7.59%,但隔热材料能够在6次重复加热后保持材料隔热性能不降低。The structure and performance evolution of 1200℃ceramic tile repeated at 1200℃were studied.Results show that after heat treatment at 1200℃for 20 times,the ceramic tile with 1200℃exhibits good macroscopic thermal stability.During the repeated heat treatment,sintering occurs between the fibers,and the bonds are melted.Quartz fiber crystallization and grain growth result in fiber diameter changes,such as neckdown,and 14%shrinkage rate of Z direction,which in turn makes the compressive strength slightly increase,and the thermal insulation performance decrease.After 1260℃and 11 times of single-sided radiant heating,the Z-direction shrinkage rate was 5.58%,and the thermal insulation effect is reduced by 7.59%.However,the thermal insulation material can maintain the thermal insulation performance of the material after 6 repeated heating.

关 键 词：陶瓷瓦 隔热材料 重复使用 力学性能 隔热性能 

分 类 号：TB321[一般工业技术—材料科学与工程]