SiC_(f)/SiC陶瓷基复合材料高温环境损伤原位监测研究进展  

Research Progress on In-situ Monitoring of Damage Behavior of SiC_(f)/SiC Ceramic Matrix Composites at High Temperature Environments

作　　者：吴晓晨 郑瑞晓 李露[2] 马浩林 赵培航 马朝利[2] WU Xiaochen;ZHENG Ruixiao;LI Lu;MA Haolin;ZHAO Peihang;MA Chaoli(School of Materials Science and Engineering,Beihang University,Beijing 100191,China;Research Institute for Frontier Science,Beihang University,Beijing 100191,China)

机构地区：[1]北京航空航天大学材料科学与工程学院,北京100191 [2]北京航空航天大学前沿科学技术创新研究院,北京100191

出　　处：《无机材料学报》2024年第6期609-622,共14页Journal of Inorganic Materials

基　　金：国家自然科学基金(92060301);中国航空发动机集团产学研合作项目(HFZL2020CXY022)。

摘　　要：连续SiC纤维增强SiC(SiC_(f)/SiC)复合材料具有高比强度、高比模量、耐高温、耐辐照等优点,在先进航空发动机热端部件和核反应堆包壳等领域具有广阔的应用前景。SiC_(f)/SiC复合材料具有纤维、界面、基体等复杂的多尺度结构,其服役环境苛刻、损伤失效过程复杂,深刻理解与准确分析其在近服役环境下损伤失效模式对于材料和构件的可靠服役具有重要意义。传统的“事后分析”方法无法获取材料在复杂服役环境下的损伤失效过程数据,因此迫切需要发展面向高温服役环境的复合材料原位表征测试技术。本文介绍了基于扫描电子显微镜、数字图像相关、显微计算机断层扫描、声发射、电阻等原位监测方法的基本原理、优势与局限性,重点讨论了以上各种原位监测方法及多种原位监测方法联用在SiC_(f)/SiC复合材料高温环境力学表征中的最新研究进展。最后,总结了SiC_(f)/SiC复合材料高温环境原位监测技术存在的挑战,并对多种原位技术联用、太赫兹辐射等新型检测技术、复杂构件的损伤原位监测方法等未来发展方向进行了初步展望。Continuous SiC fiber-reinforced SiC(SiC_(f)/SiC)composites possess high specific strength,high specific modulus,high-temperature resistance,and radiation resistance,making them suitable for applications in hot-end parts of advanced aero-engines and claddings of nuclear reactors.SiC_(f)/SiC composites are composed of fibers,interfaces and matrix,endowing them with complex multi-scale structural characteristics.These composites are designed to serve in harsh environment,and their damage and failure process are complex.A profound understanding and accurate analysis of damage and failure mechanisms of SiC_(f)/SiC composites under service environments are of great significance for the optimized design of materials and the reliable service of components.Traditional“post-mortem analysis”methods are incapable of acquiring data during the damage and failure process of materials under complex service environments.Therefore,there is an urgent need to develop in-situ characterization techniques for composites under high-temperature service environments.This paper reviewed the principles,advantages,and limitations of in-situ monitoring methods based on scanning electron microscopy,digital image correlation,micro computational tomography,acoustic emission,and electrical resistance.It focused on the latest research progress in the high-temperature mechanical characterization of SiC_(f)/SiC composites using various in-situ monitoring methods and combinations thereof.It summarized the challenges in the in-situ monitoring technologies of SiC_(f)/SiC composites under high-temperature environments and provided a preliminary outlook on the future development directions,such as the combined use of multiple in-situ monitoring techniques,new detection technologies like terahertz radiation,and in-situ damage monitoring methods for complex components.

关 键 词：SiC_(f)/SiC复合材料 原位监测 数字图像相关 声发射 显微计算机断层扫描 综述 

分 类 号：TB332[一般工业技术—材料科学与工程]