稀土锆酸盐热障涂层的合金化改性研究进展

Review on Alloying Modification of Rare Earth Zirconate for Thermal Barrier Coatings

热障涂层(TBCs)是提升航空发动机热端部件工作温度上限的有效途径之一。稀土锆酸盐(RE_(2-x)Zr_(2+x)O_(7+x/2))因其低热导率和良好的高温相稳定性被视为新一代热障涂层候选材料。鉴于稀土锆酸盐性能具有强的可设计性,本文从合金化设计思路出发,围绕力学、热物理和抗腐蚀性能综述了稀土锆酸盐涂层常规合金化和高熵化改性的国内外研究进展,并基于当前研究不足对后续工作提出展望。

Thermal barrier coatings(TBCs)are one of the effective ways to raise the upper limit operating temperature of aero-engine hot end components.Rare earth zirconate(RE_(2-x)Zr_(2+x)O_(7+x/2))is considered as a candidate material for the new generation of TBCs due to its low thermal conductivity and good high-temperature phase stability.Given to the strong performance designability of(RE_(2-x)Zr_(2+x)O_(7+x/2)),research progress on mechanical and thermophysical properties and corrosion resistance of conventional alloying modified and high entropy modified rare earth zirconate coating was reviewed based on the alloying design idea,and the prospect for subsequent research was proposed based on the deficiency of current research.