Currently, the self-shadowing effect of impinging particles is recognized as a vital factor to form columnar-like coating in the manufacture of thermal barrier coatings. Most of these quasi-columnar coatings are usually prepared under a very low-pressure condition. This paper investigates a novel quasi-columnar yttria stabilized zirconia (YSZ) coating using an atmospheric plasma spray-physical vapor deposition method. The microstructures of the coating present a quasi-columnar structure that is distributed along the cross-section of the coating within certain intervals with a large number of cluster-like structures on the top surface of the coating. A lower particle velocity that contributes to the generation of a mass of vapor YSZ materials is studied via experimental and numerical analyses and these results are compared with other current plasma spray methods. The mechanism of the self-shadowing effect from impinging particles that leads to the formation of a quasi-columnar fe...

中文翻译：

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新型长层流等离子体射流中等离子体诱导的撞击粒子自遮蔽效应和相变的数值分析

当前，撞击颗粒的自遮蔽作用被认为是在隔热涂层的制造中形成柱状涂层的重要因素。这些准柱状涂层中的大多数通常是在非常低压的条件下制备的。本文研究了一种采用大气等离子体喷涂-物理气相沉积法的新型准柱状氧化钇稳定氧化锆（YSZ）涂层。涂层的微观结构呈现准柱状结构，该准柱状结构在一定间隔内沿涂层的横截面分布，并且在涂层的顶面上具有大量的簇状结构。通过实验和数值分析研究了有助于产生大量蒸汽YSZ材料的较低的粒子速度，并将这些结果与其他当前的等离子喷涂方法进行了比较。撞击粒子的自遮蔽效应的机制导致准柱状函数的形成。