The oxidation process of thermal barrier coating was expounded and the oxidation kinetics curve was deduced;applying ANSYS to establish a micro two-dimensional model for oxide layer’ s different thickness of the thermal barrier coating where the interface shape of oxide layer can be simplified to a sine form. Simula-ting stress variation at oxide layer’ s different characteristic thickness and analyzing different oxide growth di-rections’ influence on the residual stress of various oxide layers show that, with the thickening of the oxide layer,σy at the top of bonding layer becomes bigger and the delamination occurs between oxide layer and bonding layer;when the oxide layer increases towards TBC layer and BC layer respectively or both layers sim-ultaneously, the oxide growth direction can influence the residual stress slightly and it can be ignored.%对热障涂层氧化过程进行了详细的阐述，推算了氧化增厚动力曲线，采用ANSYS分别建立了不同氧化层厚度的热障涂层微观二维模型，氧化层界面形状简化为正弦形式。模拟了氧化层不同特征厚度时的应力变化，分析了不同氧化增长方向对各层残余应力的影响。结果表明：随着氧化层的增厚，粘结层波峰处σy 增幅较大，易在氧化层和粘结层间发生分层。氧化层分别向TBC层、BC层以及同时向两层方向增长时，发现不同的氧化层增长方向对各层内的残余应力影响不大，可以忽略其影响。
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