热障涂层的漫反射辐射光谱特性研究  

A study on diffuse reflection radiation spectrum characteristics of thermal barrier coatings

作　　者：杨灿 张芝衔 陈立伟[1] YANG Can;ZHANG Zhixian;CHEN Liwei(College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China;Southampton Ocean Engineering Joint Institute,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001 [2]哈尔滨工程大学南安普顿海洋工程联合学院,黑龙江哈尔滨150001

出　　处：《应用科技》2025年第1期221-228,共8页Applied Science and Technology

基　　金：国家自然科学基金项目(62275059).

摘　　要：针对传统辐射传递模型计算误差大,无法真实描述介质层表面等问题,使用漫反射界面对辐射光谱特性进行研究分析。以航空发动机内涡轮叶片上涂敷的氧化锆涂层为研究对象,基于热辐射传输理论建立了半透明热障涂层的跨介质辐射传输模型。研究在漫反射边界条件下,非散射等温/非等温介质的高温辐射特性。由于热障涂层漫反射表面结构较为复杂,本文对涂层表面结构进行了等效化处理,并采用时域有限差分法对氧化锆涂层表面的反射率和透射率进行了数值分析,最后对计算结果进行精准度分析。Aiming at the problem that the traditional radiation transfer model has a large calculation error and can not describe the surface of the medium layer,the diffuse reflection interface was used to study and analyze the radiation spectrum characteristics.Taking the zirconia coating on the turbine blade of aero engine as the object,a transmedia radiative transport model of translucent thermal barrier coating was established based on the theory of heat radiation transfer.The high-temperature radiation characteristics of non-scattering isothermal/non-isothermal medium under diffuse reflection boundary conditions were studied.Due to complexity of the diffuse reflective surface structure of the thermal barrier coating,the surface structure of the coating was equivalently treated,and the reflectivity and transmittance of the zirconia coating were numerically analyzed by using the method of finite difference in time domain.Finally,the accuracy of the calculation results was analyzed.

关 键 词：热障涂层 氧化锆 辐射传输 半透明 漫反射 辐射特性 时域有限差分 精准度 

分 类 号：TG148[一般工业技术—材料科学与工程]