Research and development of advanced thermal barrier coating materials and preparation technology

Thermal barrier coatings (TBCs) can effectively improve the operation temperature and service life of aero-engine hot end components. At present, yttria-stabilized zirconia (YSZ) is the most widely used thermal barrier coating materials. Phase transformation of YSZ occurs when the service temperature is higher than 1200℃, which seriously affects the service life and service safety of the aero-engines, and it is difficult to meet the service requirements of new generation of aero-engines. The investigation on the advanced thermal barrier coating materials (TBCs) was summarized in this paper. The research progress of several novel thermal barrier coating candidates were mainly reviewed, such as multiple oxide co-droped YSZ, A₂B₂O₇-type compounds, perovskites, magnetoplumbite compounds, and new bond coating materials. The preparation principles and advantage-disadvantage of thermal barrier coatings were discussed. At last, the development direction of thermal barrier coating materials and preparation technology were also proposed.