热障涂层(TBC)技术是航空航天、海军、地面燃机等军民两用的高端技术，为重大装备制造和国防工业所急需，属于国家有战略重要性的关键技术。本项目主要研究热障涂层中控制其失效机制的最主要因素－热增长氧化层（TGO）的跨尺度力学行为，以及缺陷萌生与TGO形貌的关系。通过本项目的研究，我们建立了多尺度分析方法来揭示热防护层界面失效机理及缺陷对其的影响，分析了热生长氧化层形貌及厚度对热障涂层热循环冷却后残余应力及压痕响应的影响及其所引发的脱层机制。为未来设计寿命更长、工作气体温度更高、可靠性更好的高温热障涂层提供理论基础，为能源、运载、国防等领域关键装备的零部件制造提供指导。

Thermal barrier coating (TBC) is the highand key technology for aerospace, navy, and gas turbine, and is demanded by the manufacture of large equipment. This project focuses on the multiscale mechanical behavior of the thermally grown oxids, which is the most important factor to control the failure mechanism for the thermal barrier coating, and the relationship between defect nucleation and the aspects of the thermally grown oxide. In this project, we developed a multiscale method to analyze the failure mechanism of interface between the thermal protection system and substrate, and proposed measurement techniques to evaluate the property and bonding strength of the thermal protection system. These works provide the theoretical bases and technical supports for evaluating and designing the thermal barrier coating system whith longer life, higher working temperature, and better reliability, and also provide the instruction for the manufacture of the key parts used for energy, carry, and defense.

热障涂层(TBC)技术是航空航天、海军、地面燃机等军民两用的高端技术，为重大装备制造和国防工业所急需，属于国家有战略重要性的关键技术。本项目主要研究热障涂层中控制其失效机制的最主要因素－热增长氧化层（TGO）的跨尺度力学行为，以及缺陷萌生与TGO形貌的关系。通过本项目的研究，我们建立了多尺度分析方法来揭示热防护层界面失效机理及缺陷对其的影响，分析了热生长氧化层形貌及厚度对热障涂层热循环冷却后残余应力及压痕响应的影响及其所引发的脱层机制。为未来设计寿命更长、工作气体温度更高、可靠性更好的高温热障涂层提供理论基础，为能源、运载、国防等领域关键装备的零部件制造提供指导。