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涂层的厚度是涂层设计的重要参数,对涂层的热力性能有很大的影响。本文基于ANSYS有限元分析方法模拟不同厚度涂层的热力性能,确定涂层最佳厚度范围,为涂层厚度的设计提供一定理论依据。文中选用哈氏合金C-276作为涂层材料,分别从垂直于涂层平面方向和平行于涂层平面方向的传热来研究不同厚度涂层的热力性能。结果表明,垂直于涂层表面方向的传热对界面上热应力影响较大,界面热应力随涂层厚度的增加而增大;平行于涂层平面方向的传热对涂层的最大膨胀量影响较大,最大膨胀量随涂层厚度的增加而平缓增大。
The thickness of the coating is an important parameter of the coating design, which has a great influence on the thermal performance of the coating. In this paper, ANSYS finite element analysis based on the simulation of different thickness of the thermal properties of coatings to determine the optimal thickness of the coating range for the coating thickness to provide a theoretical basis for the design. In this paper, Hastelloy C-276 was chosen as the coating material to study the thermal properties of coatings with different thickness from the direction perpendicular to the coating plane and the parallel to the coating plane. The results show that the heat transfer in the direction perpendicular to the coating surface greatly affects the thermal stress at the interface, and the thermal stress increases with the increase of the coating thickness. The maximum thermal expansion of the coating A greater impact, the maximum expansion with the increase of coating thickness increases smoothly.