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首页> 外文会议>2003 International Thermal Spray Conference Vol.2; May 5-8, 2003; Orlando, Florida, USA >Processing of Y-PSZ Thermal Barrier Coatings Implementing a High Power Laser Diode: Process Parameters
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Processing of Y-PSZ Thermal Barrier Coatings Implementing a High Power Laser Diode: Process Parameters

机译：使用大功率激光二极管的Y-PSZ热障涂层处理：工艺参数

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摘要

Several studies have been undertaken recently to adapt Yttria Partially Stabilized Zirconia (Y-PSZ) thermal barrier coating (TBC) characteristics during their manufacturing process. Thermal spraying implementing laser irradiation appears as one of these possibilities to modify the coating morphology. This study aims at presenting the results concerning in situ (i.e., simultaneous treatment) and a posteriori (i.e., post-treatment) laser treatments implementing a high power laser diode. In both cases, the coatings were atmospheric plasma sprayed (APS). Laser irradiation was achieved using a 3 kW, average power, laser diode, exhibiting an 848 nm wavelength. Experiments were performed to reach two goals. First, laser post-treatments aimed at building a map of the laser processing parameter effects on the coating microstructure, in order to estimate the laser processing parameters, which seem to be suited to the change into in situ coating remelting. Second, in situ coating remelting aimed at quantifying the involved phenomena. In that case, the coating was treated layer by layer as it was manufactured. The input energy effect was studied by varying the scanning velocity (i.e., between 35 and 60 m.min~(-1)), and consequently the irradiation time (i.e., between 1.8 and 3.1 ms, respectively).
机译：最近已经进行了一些研究，以在其制造过程中适应氧化钇部分稳定的氧化锆（Y-PSZ）热障涂层（TBC）的特性。实施激光照射的热喷涂似乎是改变涂层形态的这些可能性之一。这项研究的目的是介绍有关实施大功率激光二极管的原位（即同时治疗）和后验（即后处理）激光治疗的结果。在这两种情况下，涂层都是常压等离子体喷涂（APS）。使用3 kW的平均功率，显示848 nm波长的激光二极管实现了激光照射。进行实验以达到两个目标。首先，激光后处理旨在建立激光加工参数对涂层微观结构的影响图，以估计激光加工参数，这似乎适合于原位涂层重熔的变化。第二，原位涂层重熔旨在量化所涉及的现象。在这种情况下，涂层在制造时逐层处理。通过改变扫描速度（即在35和60 m.min〜（-1）之间）和照射时间（即分别在1.8和3.1 ms之间）来研究输入能量的影响。

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