为了准确预测热障涂层(TBCs)的剥落寿命,把涂层使用过程中所存在的潜在危险减到最低,建立精确的热障涂层寿命预测模型具有十分重要意义.本文介绍了一种电子束物理气相沉积(EB-PVD)技术制备的热障涂层的寿命预测模型.该模型是通过对EB-PVD热障涂层陶瓷的物理和力学性能、结合强度的测定,热生长氧化层(TGO)生长动力学的研究以及热循环剥落寿命数据的定量研究而建立的一个TBCs系统的非线性寿命预测模型.从涂层实际寿命与模型预测寿命对比发现,该模型预测的涂层寿命与涂层的实际寿命相吻合.
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