热障涂层(TBCs)具有良好的隔热性能,是航空发动机和燃气轮机高温部件的关键材料.在高温服役状态,涂层的剥落会导致严重的问题,因此涂层的失效机理是热障涂层研究中急需解决的关键问题.除了受到热应力的影响以外,涂层的失效还受到热生长氧化物(TGO)的生成和长大的影响,本文介绍了粘结层的氧化、TGO的生成和长大以及微裂纹的产生、扩展、直到剥离脱落的整个失效过程；探讨了影响热障涂层失效的若干因素,并对其进行的各种改性研究进行了概述,分析总结了热障涂层失效相关研究的发展趋势.
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