As the continuous development of aero – engine towards high fuel efficiency and high thrust weight ratio

the service conditions of thermal barrier coating on the surface of engine hot-section components are becoming more and more stringent. As a new type of thermal barrier coating material

the development and application of rare earth zirconate have attracted more and more attention from scholars at home and abroad. In a series of rare earth zirconates

 Sm

2

Zr

2

O

7

has the advantages of stable pyrochlore structure

low thermal conductivity and high coefficient of thermal expansion. In order to meet the higher service requirements of thermal barrier coatings

the doping modification and perfo

rmance evaluation of Sm

2

Zr

2

O

7

have increasingly become an important research hotspot. Firstly

this paper briefly summarizes the thermal barrier coating materials

and then Sm

2

Zr

2

O

7

based ceramic materials and its corresponding coatings are investigated from the views of crystal structure

thermophysical properties

mechanical properties and corrosion resistance in detail. And the results could provide a reference for the research and application of Sm

2

Zr

2

O

7

in the field of advanced thermal barrier coatings.