Research Progress on Gadolinium Zirconate Ceramics as Thermal Barrier Coatings
FU Lang 1,2, MAO Jie2 , DENG Ziqian2 , DENG Chunming2 , LIU Min2 , ZENG Dechang1
(1. South China University of Technology, Guangzhou 510640, China; 2. Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510651, China)
Abstract：With the development of aero-engine towards high efficiency and high thrust weight ratio, higher requirements are put forward for the thermal barrier coatings applied on the surface of engine hot end parts. For YSZ materials can not meet the requirements of higher temperature and better thermal insulation, the development and application of new thermal barrier coating materials are attracting more and more attention worldwide. Gadolinium zirconate is one of the most promising ceramic materials for thermal barrier coatings due to its low thermal conductivity, high phase transition temperature and high thermal expansion coefficient. Based on the published literature, the research progress on gadolinium zirconate thermal barrier coatings is summarized in detail. Firstly, the research status of thermal barrier coating materials and preparation technology is briefly introduced. Secondly, the properties of gadolinium zirconate materials and the properties of gadolinium zirconate thermal barrier coating prepared by different processes are expounded in detail. Finally, the existing problems of gadolinium zirconate materials and the application prospect of preparing gadolinium zirconate coating by plasma spray-physical vapor deposition (PS-PVD) are discussed.
2021, 
