Zirconium oxide-based thermal barrier coating with high thermal stability and low thermal conductivity and preparation method thereof

The invention discloses a zirconia-based thermal barrier coating with high thermal stability and low thermal conductivity and a preparation method of the zirconia-based thermal barrier coating. The zirconia-based thermal barrier coating comprises the following raw materials: 5%-10% of (YxScyGd1-x-y) 2O3, 10%-20% of LaPO4, 1%-5% of MOz, 8.6%-15.2% of RE2O3 and the balance of ZrO2, in the (YxScyGd1-x-y) 2O3, x is equal to 0.5 to 0.75, and y is equal to 0.05 to 0.15; in the MOz, M is one or more of Mg, Ca and In; in the RE2O3, RE is one or more of Er, Sm, Dy, Yb and Eu. The components of the zirconia-based thermal barrier coating are doped and modified, and the preparation process is optimized, so that the high-temperature stability, thermal shock resistance and sintering resistance of the thermal barrier coating can be effectively improved, and the high-temperature thermal conductivity of the thermal barrier coating is reduced. 本发明公开了一种高热稳定低热导氧化锆基热障涂层及其制备方法，原料包括：5%~10% (YxScyGd1-x-y)2O3，10%~20% LaPO4，1%~5% MOz，