With the development of aviation, aerospace and civil technology, the use temperature of hot end components is more and more high, has reached the limit of superalloy and single crystal materials. Taking the heating parts of fuel turbine such as nozzle
With the development of aviation, aerospace and civil technology, the use temperature of hot end components is more and more high, has reached the limit of superalloy and single crystal materials. Taking the heating parts of fuel turbine such as nozzle, blade and combustor as an example, they are in the harsh environment of high temperature oxidation and high temperature airflow erosion and can withstand the temperature up to 1100℃, which has exceeded the limit temperature of high temperature nickel alloy (1075℃). The metal of high strength, high toughness and high temperature resistance of the ceramic was prepared by combining the advantages of thermal barrier coating can solve the above problems, it can have the effect of heat insulation, anti-oxidation, anti-corrosion, has been in the hot end of steam turbine, diesel generators, jet engines on material has a certain application, and extend the service life of the hot end parts.
Thermal barrier coatings (TBCs) can significantly reduce the temperature of the substrate, have high hardness, good chemical stability, prevent high-temperature corrosion, prolong the service life of hot end components, improve engine power and reduce fuel consumption, etc. The emergence of TBCs has opened up a new way to greatly improve the performance of aero-engines. Since the 1970s, the United States, The United Kingdom, France, Japan and other developed industrialized countries have competed to develop TBCs coating, and a large number of applications in blade, combustion chamber, thermal shield, nozzle, flame tube, tail nozzle and other aero-engine hot end parts.
The application research of thermal barrier coating (TBCS) on turbine blades of aero-engines in China has begun and been paid attention. Some turbine blades have been sprayed with TBCS, and some achievements have been made. The application of thermal barrier coating technology can greatly improve the comprehensive performance of gas turbine engines and ground, prolong its service life, is one of the key technology of high performance engines and gas turbine development, with China's large aircraft, ground gas turbine, solid fuel engine technology advances, the demand for thermal barrier coating will be more and more big, Thermal barrier coatings (TBCS) will be widely used in hot end components in aerospace, ship, nuclear industry, automobile 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 technicians will be more skilled.
