碳纤维增韧陶瓷基复合材料高温氧化性能研究进展:氧化机制、氧化损伤实验与模型

Review of high-temperature oxidation properties for carbon fiber toughened ceramic matrix composites:Oxidation mechanisms,oxidation damage experiments and models

碳纤维增韧陶瓷基复合材料兼具陶瓷材料优良的抗氧化腐蚀性能和碳纤维材料增强增韧的力学性能,已成为最有潜力的高超声速飞行器热防护候选材料。碳纤维增韧陶瓷基复合材料在多物理场耦合服役环境下的高温氧化损伤失效机制对热防护材料设计及性能表征与评价至关重要,也一直是国内外学者研究的热点。本文从高温氧化机制、耦合失效实验、高温氧化模型3个方面对C/SiC和C/ZrB_2-SiC复合材料进行详细论述和总结,对相应的研究方法的局限性和适用范围进行分析和评价,并展望了碳纤维增韧陶瓷基复合材料氧化损伤研究的发展趋势,进而为碳纤维增韧陶瓷基复合材料在热力氧耦合条件下的热/力响应及性能评价研究起到指导作用。

Carbon fiber toughened ceramic matrix composites inherit the excellent mechanical properties of carbon fibers and the high oxidation and corrosion resistance of ceramics,become the most promising candidate thermal protection materials for hypersonic vehicles.The high-temperature oxidation mechanisms and damage mechanical behaviors of carbon fiber toughened ceramic matrix composites in coupled service environments are important topics in the study of design,property characteristic and evaluation of thermal protection material.This provides a detailed discussion and summary of the research and analysis methods employed to characterize the oxidation damage of C/SiC and C/ZrB_(2)-SiC composites in three aspects:High-temperature oxidation mechanisms,coupled failure experiment,and high-temperature oxidation model.The limitations and applicability of various research methods are analyzed and evaluated.In addition,the development trend of investigation of oxidation damage in carbon fiber toughened ceramic matrix composites is provided.It provides guidance for the study of thermal/mechanical response analysis and performance evaluation of carbon fiber toughened ceramic matrix composites in the thermal/mechanical/oxygen environment.