热障涂层材料性能和失效机理研究进展
Progress in research on the material properties and failure mechanisms of thermal barrier coatings
查看参考文献80篇
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文摘
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热障涂层材料破坏由大尺度屈曲和层离机制产生，而这些机制又是微裂纹形核、扩展及相互连通结果的积累。由于特殊制备工艺和使用环境，材料性能涉及到许多特殊机制。近半个世纪的研究，人们对其性能有了充分认识。综述近几年的研究结果，内容包括：热生长氧化现象及其热力学描述；热生长应力与材料失效的联系；材料破坏机理与性能控制参数组织的联系；微缺陷演化产生的材料屈曲和层离所需的能量释放率；破坏准则、服役寿命预计模型和评价标准等。 |
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其他语种文摘
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The failure of thermal barrier coatings is controlled by a sequence of events of micro-crack nu-cleation, propagation and coalescence, which accumulate prior to the final failure by large scale bucking and spalling. With special manufacturing approaches and operating environments, several specific mechanisms are involved, which have been well studied in the research in the last half century. This paper reviews the understandings and recent progress related to this field. It includes that thermally grown oxidation and its thermodynamic description, the relationships between grown stresses and material failure mechanisms, the relationship between the interface cracking, governing material properties and microstructure morphological features, the energy release rate in the micro-crack evolution for buckling and spalling of TBCs. The material fracture criteria, and the prediction models of coating life and the systematic approaches to evaluate TBC performance. |
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来源
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力学进展
,2003,33(4):548-559 【核心库】
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关键词
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热障涂层
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热生长氧化
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屈曲
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层离
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股役寿命
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微组织
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能量释放率
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地址
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中国科学院力学研究所, 北京, 100080
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-0992 |
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学科
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化学工业 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:1166903
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参考文献 共
80
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