Research of thermal barrier coatings (TBCs) is extremely challenging to the poor service conditions, failure mechanism with multi-coupling factors and its own complex multi-interface poly-phase characteristics. The performance of TBCs is mainly determined by its special composition and microstructure, and it is degraded due to the temperature, time, environment and other factors in service. The evaluation of service performance of TBCs is a necessary way to improve coating performance and develop new coatings. In order to rationally evaluate the life of the coatings and to further study the evolution of coating structure and properties, different simulated service environment test devices are established. These test devices have different heat sources, such as furnace, flame, infrared lamp and laser, etc., which coupled the function with rapid temperature rise and down, temperature gradient, corrosion and CMAS deposition simulation, even the alternating load simulation, and then the low-cost, flexible and controllable testing means and methods are obtained for revealing failure mechanism of TBCs, improving the coating material and process and fast evaluation of durability of the coatings.
Service Environment Simulation Test Method of Thermal Barrier Coatings
2018
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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