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首页> 外文期刊>Journal of Materials Engineering and Performance >Laser Remelting of Plasma-Sprayed Yttria Partially Stabilized Zirconia Coatings
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Laser Remelting of Plasma-Sprayed Yttria Partially Stabilized Zirconia Coatings

机译：等离子喷涂氧化钇部分稳定的氧化锆涂层的激光重熔

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摘要

A plasma-sprayed 8 wt. percent yttria partially stabilized zirconia coating doped with 3 wt. percent SiO_2 was remelted by laser. The microstructure of the as-sprayed and laser-remelted coatings was characterized by scanning electron microscopy (SEM), electron probe microanalysis (EPMA), transmission electron microscopy (TEM), and x-ray diffraction (XRD). The effect of laser remelting on the hardness, wear resistance, and thermal shock resistance of the coatings was also studied. The laser-remelted coating consists of fine solidification grains without the presence of pores and cracks. The elements are uniformly distributed in the laser-remelted coating. Nontransformable tetragonal (t') phase is predominant in the laser-remelted coating with a small amount of cubic phase. Laser remelting greatly enhanced the hardness, wear resistance, and thermal shock resistance of the coatings, and should find more applications.
机译：等离子喷涂的8 wt。 3wt。％掺杂的氧化钇部分稳定的氧化锆涂层。激光重熔了5％的SiO_2。通过扫描电子显微镜（SEM），电子探针显微分析（EPMA），透射电子显微镜（TEM）和X射线衍射（XRD）对喷涂和激光重熔涂层的微观结构进行了表征。还研究了激光重熔对涂层硬度，耐磨性和耐热冲击性的影响。激光重熔涂层由细小的凝固晶粒组成，没有孔隙和裂纹。元素均匀分布在激光重熔涂层中。不可变形的四方相（t'）在具有少量立方相的激光重熔涂层中占主导地位。激光重熔极大地提高了涂层的硬度，耐磨性和抗热震性，应该找到更多的应用。

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