航空发动机涡轮叶片热障涂层冲蚀试验装置的研制

发布时间：2018-11-25 17:14

【摘要】：目的通过研制热障涂层冲蚀服役环境的模拟装置,来研究冲蚀失效机制。方法通过研制模拟热障涂层高温热冲击的燃气喷枪,在喷枪中设计速度、流量可控的颗粒送料系统,同时在装置中集成裂纹演化实时检测的声发射系统。结果该系统实现了热障涂层冲蚀服役环境的模拟,温度场、裂纹演化损伤参量的同步采集、输出与显示,从而完成了冲蚀服役环境模拟与关键损伤参量实时检测的一体化设计。结论装置能完成热障涂层常温、高温等各种服役温度、各种冲蚀角度、各种冲蚀速度等条件下的模拟试验,并提供较为系统的损伤参量检测数据,为理解热障涂层的冲蚀机理、优化其设计制备提供有效的试验数据。
[Abstract]:Aim to study the erosion failure mechanism of thermal barrier coating by developing a simulation device for erosion service environment. Methods A gas spray gun simulating high temperature thermal shock of thermal barrier coating was developed. A particle feeding system with controllable velocity and flow rate was designed in the spray gun. At the same time, an acoustic emission system was integrated into the device to detect the crack evolution in real time. Results the system realized the simulation of erosion service environment of thermal barrier coating, the synchronous acquisition, output and display of temperature field and damage parameters of crack evolution. Thus, the integrated design of environment simulation and real-time detection of key damage parameters was completed. Conclusion the device can be used to simulate the thermal barrier coating under the conditions of room temperature, high temperature and various service temperature, various erosion angles, various erosion velocity and so on, and provide systematic data of damage parameter detection, in order to understand the erosion mechanism of thermal barrier coating. Optimize its design and preparation to provide effective test data.
【作者单位】：湘潭大学材料科学与工程学院装备用关键薄膜材料及应用湖南省国防科技重点实验室;湘潭大学材料科学与工程学院低维材料及其应用技术教育部重点实验室;
【基金】：国家自然科学基金项目(51590891,11272275,11472237)~~
【分类号】：TG174.4

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