Current studies of ceramic topcoat materials for thermal barrier coatings (TBCs) of next generation focus mainly on ternary, quaternary, and more complex oxide systems. The use of high-entropy ZrO₂-based ceramics doped with a mixture of rare-earth metal (REM) oxides for TBCs was studied, and the properties of thermal barrier ceramic layers deposited by EB-PVD in one process cycle were examined. For research, a CeO₂-based REM concentrate (light concentrate (LC)) with the following composition (wt.%) was chosen: 62.4 CeO₂, 13.5 La₂O₃, 10.9 Nd₂O₃, 3.9 Pr₆O₁₁, 0.92 Sm₂O₃, 1.2 Gd₂O₃, 0.24 Eu₂O₃, 2.66 ZrO2, 1.2 Al2O3, and _1.7SiO₂; the total content of other oxides was 1.38. Targets for depositing the thermal barrier ceramic layer were produced by the ceramic synthesis method from the 85 wt.% M-ZrO₂–15 wt.% LC mixture. Two-layer metal/ceramic TBCs were deposited employing the UE-174 industrial electron-beam installation operated at ELTECHMACH (Vinnytsia) onto model blades manufactured by directional crystallization from the ZhS-26VI alloy. A rough dense glossy coating was produced. The coating on the blade suction side and leading edge was 85 μm thick and on the blade pressure side was 70 μm thick. The coating phase composition represented a mixture of F-ZrO₂ and M-ZrO₂. Dense columnar crystallites collected into feather-like structures were observed in the ceramic layer. Vertical pores that formed between the crystallites were located perpendicularly or at an angle to the surface. A complex Al₂O₃-based spinel layer 2–2.5 μm thick grew between the ceramic topcoat and metallic bond coat layers. The ceramic layer acquired a laminar structure under the synergistic effect of components in the ZrO₂–REM concentrate mixture in the vapor deposition process. The microstructural features of the coating determined the microhardness gradient in height. Thermal cycling experiments showed that this coating withstood 161 thermal cycles, which was higher than the standard YSZ coating did (138 thermal cycles). Previous studies showed that ZrO₂ stabilization with REM oxide concentrates was promising for the microstructural design of the thermal barrier ceramic layer.

下一代用于热障涂层（TBC）的陶瓷面漆材料的当前研究主要集中在三元，四元和更复杂的氧化物体系上。研究了掺有稀土金属（REM）氧化物的高熵ZrO ₂基陶瓷在TBC中的应用，并研究了EB-PVD在一个工艺周期中沉积的热障陶瓷层的性能。进行研究，将CeO ₂基REM浓缩物（浓缩物光（LC））具有以下组成（重量％）被选：62.4的CeO ₂，13.5的La ₂ ö ₃，10.9的Nd ₂ ö ₃，3.9镨₆ Ô ₁₁，0.92 Sm ₂ O ₃，1.2的Gd ₂ ö ₃，0.24的Eu ₂ ö ₃，2.66的ZrO 2，1.2 Al2O3和_1.7的SiO ₂ ; 其他氧化物的总含量为1.38。通过陶瓷合成法由85重量％的M-ZrO ₂制备用于沉积热障陶瓷层的靶。–15 wt。％LC混合物。使用在ELTECHMACH（Vinnytsia）操作的UE-174工业电子束装置将两层金属/陶瓷TBC沉积到通过ZhS-26VI合金定向结晶制造的模型叶片上。产生粗糙的致密光泽涂层。叶片吸力侧和前缘的涂层厚度为85μm，叶片压力侧的涂层厚度为70μm。涂层相组成代表F-ZrO ₂和M-ZrO ₂的混合物。在陶瓷层中观察到聚集成羽毛状结构的致密柱状微晶。在微晶之间形成的垂直孔与表面垂直或成一定角度。复杂的Al ₂ O ₃陶瓷面涂层和金属粘结涂层之间形成了厚度为2–2.5μm的基尖晶石层。在气相沉积过程中，在ZrO ₂ -REM精矿混合物中各组分的协同作用下，陶瓷层获得了层状结构。涂层的微观结构特征决定了高度上的显微硬度梯度。热循环实验表明，该涂层经受了161次热循环，高于标准的YSZ涂层（138次热循环）。先前的研究表明，用REM氧化物精矿稳定ZrO ₂对于热障陶瓷层的微结构设计很有希望。