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       With the development of aviation, aerospace and civil technology, the temperature requirements for hot end components are getting higher and higher, and the limit conditions of superalloys and single crystal materials have been reached. Taking the heated parts of fuel turbines such as nozzles, blades, and combustion chambers as an example, they are in harsh environments such as high-temperature oxidation and high-temperature airflow erosion. . The thermal barrier coating prepared by combining the high strength and toughness of metal with the high temperature resistance of ceramics can solve the above problems. It can play the role of heat insulation, anti-oxidation and anti-corrosion. It has been used in hot-end materials such as generators and jet engines, and the service life of hot-end components has been extended.



Thermal barrier coatings can significantly reduce substrate temperature, have high hardness and good chemical stability, and have the advantages of preventing high temperature corrosion, extending the service life of hot end components, improving engine power and reducing fuel consumption. performance opens up new avenues. Since the 1970s, developed industrialized countries such as the United States, the United Kingdom, France, and Japan have all competed to develop TBCs coatings, which have been widely used in aero-engine thermal coatings such as blades, combustion chambers, heat shields, nozzles, flame tubes, and tailpipes. on the end part.



The application research of thermal barrier coating on aero-engine turbine blades in my country has been started and received attention. Thermal barrier coatings have been sprayed on some turbine blades, and staged results have been achieved. The application of thermal barrier coating technology can greatly improve the comprehensive performance of engines and ground gas turbines and prolong their service life. It is one of the key technologies in the development of high-performance engines and gas turbines. With continuous progress, the demand for thermal barrier coatings will become larger and larger, and thermal barrier coatings will have broad application prospects in hot-end components in aerospace, ships, nuclear industry, automobiles and other fields. At the same time, the thermal barrier coating manufacturing process and equipment will be continuously improved, the designers will have a more comprehensive understanding of the thermal barrier coating, and the thermal barrier coating technology personnel will be more skilled.

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