High-temperature high performance surface coatings for thermal energy reflection

为实现先进的热管理系统，开发了高温热能表面涂层。该涂层的核心思想是利用氧化陶瓷多层结构来发挥电磁波的干扰效应。干涉效应在热能控制中的应用需要(1)宽波长的干涉设计和(2)电磁波在宽入射角下的高反射。为了解决这些问题，采用三维波浪表面形貌进行涂层设计。为了设计三维波浪面，采用了仿真方法：将模型结果与实验结果进行了比较。仿真结果验证了波浪形面层对热能反射的有效性。该模拟估计的最大可能反射率大于平面。结果表明，目前的热能控制面是控制高温下热反射能的有效途径。

High temperature thermal energy surface coatings have been developed to achieve advanced thermal managing system. The key concept of the coating is to apply interference effect of electromagnetic wave using oxide ceramic multi layer structure. Application of the interference effect to thermal energy control needs (1) wide wavelength interference design and (2) high reflection over wide incident angle of electromagnetic wave. To solve these problems, three-dimensional wavy surface morphology is employed for design of the coatings. To design three-dimensional wavy surface, simulation is used : the procedure is evaluated to compare model results with experimental ones. Simulation results demonstrate the effectiveness of the wavy surface layer on thermal energy reflection. The maximum possible reflectance estimated from this simulation is larger than the flat surface. It is concluded that the present thermal energy control surface is effective way to control thermal reflection energy at high temperatures.