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中文摘要：
根据等离子喷涂的传热特点，利用ANSYS有限元软件，建立了等离子喷涂纳米团聚体ZrO2-7％Y2O2（7％为质量分数）粉末熔化过程模型，分析了粉末直径和喷涂距离对粉末熔化状态的影响，为优化喷涂工艺参数提供了理论依据。在优化的等离子喷涂工艺参数下，获得了一定比例纳米颗粒熔化后重结晶得到的基体相和未完全熔化的纳米颗粒嵌入相组成的特殊两相结构的纳米结构涂层。
英文摘要：
To optimize the processing parameters of nanostructured coating prepared by plasma spraying using agglomerated powders, according to the heat transfer characteristics of plasma spraying, a computing model for analyzing the melting process of plasma spraying agglomerated ZrO2- 7%Y2O3 powders was established by using the employment of ANSYS parametric design language. The effects of the diameter of powers and spray distance on melting process of powders were also investigated. The obtained experimental results show that the microstructure of the plasma sprayed coating exhibits a bimodal distribution which consists of a certain percentage of the fully molted and partially melted nanostructured particles under the optimum processing parameters.
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