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Depletion Model of Aluminum in Bond Coat for Plasma-sprayed Thermal Barrier Coatings

机译:等离子喷涂热障涂层铝铝铝耗尽模型

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The aluminum depletion of NiCrAlY bond coat in an air-plasma-sprayed thermal barrier coating (TBC) has been studied by experimental and simulative approaches. Upon thermal exposure, Al depletion regions were observed. The depletion of aluminum is resulting from Al diffusion towards the surface of bond coat and into substrate. A mathematical model of Al depletion was presented. The model is able to explain the observed results in a qualitative way and has been shown that Al depletes within the bond coat by diffusion.
机译:通过实验和模拟方法研究了空气等离子体喷涂的热阻挡涂层(TBC)中镍氢粘接涂层的铝耗尽。在热暴露时,观察到Al耗尽区。铝的耗竭由Al扩散朝向粘合涂层的表面和基质中产生。提出了Al耗尽的数学模型。该模型能够以定性方式解释观察结果,并且已经证明通过扩散粘合在粘合涂层内。

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