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| Research Status of Sm2Zr2O7 Thermal Barrier Coatings |
| XIE Min, LIU Yang, LI Ruiyi, PEI Xun, SONG Xiwen, AN Shengli |
| Inner Mongolia University of Science and Technology, Baotou 014010, China |
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Abstract 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, Sm2Zr2O7 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 performance evaluation of Sm2Zr2O7 have increasingly become an important research hotspot. Firstly, this paper briefly summarizes the thermal barrier coating materials, and then Sm2Zr2O7 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 Sm2Zr2O7 in the field of advanced thermal barrier coatings.
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2022, 
