基 于 磷 光 测 温 技 术 的 智 能 热 障 涂 层 研 究 进 展

The lack of surface temperature distribution data of turbine blade coating is a key problem in the current aero engine material design，which seriously limits the performance improvement of advanced aircraft. Thermal barrier coating（for turbine blades）doped a small quantity of rare earth elements has the potential to evolve into a novel intelligent material known as Smart Thermal Barrier Coating（STBC）. This currently represents the most promising method for determining the temperature distribution of coated blades during engine service. In this paper，the principle and method of on-line （thermal barrier sensor coating）/off-line （thermal history coating） temperature measurement of STBC are introduced in detail. The research progress of surface temperature distribution and interface temperature gradient detection of aero-engine hot end components based on different preparation processes of STBCis also introduced. Based on the temperature measurement requirements of different aero-engine hot end components，the practical industrial applications of STBC at home and abroad are summarized. Based on the effect of rare earth element doping on the intrinsic properties of thermal barrier coatings，the feasibility of practical application of thermal barrier coatings is demonstrated. Finally，the problems that need to be solved in the application of this temperature measurement technology to the thermometry of aero engine hot end components are pointed out，and its development direction is prospected.