The use of compositionally complex ZrO₂-based ceramics doped with a mixture of yttrium-subgroup rare-earth metal (REM) oxides for the deposition of thermal barrier coatings (TBCs) was studied. For research, a heavy concentrate (HC) of yttrium-subgroup REM oxides, consisting of (wt.%) 13.3 Y₂O₃, 1.22 Tb₄O₇, 33.2 Dy₂O₃, 8.9 Ho₂O₃, 21.8 Er₂O₃, 1.86 Tm₂O₃, 12.5 Yb₂O₃, 0.57 Lu₂O₃, and 6.65 other oxides (including 3.2 Al₂O₃), and Y₂O₃ and M-ZrO₂ powders were chosen. The targets for depositing electron-beam ceramic TBC layers—both standard and compositionally complex ones—were made of ceramic mixtures including (wt.%) M-ZrO₂–7 Y₂O₃ and 90 M-ZrO₂–10 HC. The properties of the compositionally complex and standard yttria-stabilized ZrO₂-based ceramic layers in electron-beam TBCs applied in one process cycle were compared. Two-layer metal/ceramic TBCs were deposited onto model blades by directional crystallization from the ZhS-26VI alloy employing an UE-174 industrial electron-beam installation (ELTECHMACH, Vinnytsia). The ceramic M-ZrO₂–7 Y₂O₃ topcoat was denoted as YSZ and 90 M-ZrO₂–10 HC as HCSZ. The MZP-6 alloy (nickel–chromium–aluminum–yttrium) was used to form an inner heat-resistant bond coat. This resulted in rough dense glassy coatings differing by color: light-gray YSZ and dark-gray HCSZ. The coatings were 90–95 μm thick on the blade back side and 90 μm thick on the pressure side. Both coatings included the F-ZrO₂ phase. Feather-like microstructures emerged in the coatings. The YSZ topcoat contained two types of dense structures, represented by columns and branched formations, and the HCSZ layer was of irregular microstructure with wide feather-like formations growth together. The laminar microstructure of the ceramic topcoat was due to the process features peculiar to electron-beam deposition. The YSZ topcoat had the following microhardness: 3884 MPa on the back side and 6052 MPa on the pressure side. The HCSZ topcoat had much lower microhardness: 1381 MPa on the back side and 1679 MPa on the pressure side. The compositionally complex coating withstood 161 thermal cycles and the standard coating 138 thermal cycles. Previous studies showed that ZrO₂ stabilization with concentrates of yttrium-subgroup REM oxides was promising for the microstructural design of TBC ceramic topcoats.

研究了使用掺有钇亚族稀土金属（REM）氧化物混合物的基于ZrO ₂的成分复杂的陶瓷来沉积热障涂层（TBC）。为研究，一个重的浓缩物（HC）钇亚组REM氧化物的，选自（重量％）13.3Ÿ ₂ ö ₃，1.22铽₄ ø ₇，33.2的Dy ₂ ö ₃，8.9何₂ ö ₃，21.8尔₂ ø ₃，1.86的Tm ₂ ö ₃，12.5的Yb ₂ ö ₃，0.57路₂ ö ₃选择了6.65种其他氧化物（包括3.2 Al ₂ O ₃），Y ₂ O ₃和M-ZrO ₂粉末。标准和成分复杂的电子束陶瓷TBC层的沉积靶都是由陶瓷混合物制成的，这些混合物包括（wt。％）M-ZrO ₂ –7 Y ₂ O ₃和90 M-ZrO ₂ –10 HC。组成复杂且标准的氧化钇稳定的ZrO _2的性质比较了在一个工艺周期中应用的电子束TBC中的基层陶瓷层。通过使用UE-174工业电子束装置（ELTECHMACH，Vinnytsia）从ZhS-26VI合金进行定向结晶，将两层金属/陶瓷TBC沉积到模型叶片上。陶瓷M-ZrO ₂ –7 Y ₂ O ₃面漆表示为YSZ，而90 M-ZrO ₂ –10 HC表示为HCSZ。MZP-6合金（镍-铬-铝-钇）用于形成内部耐热粘结层。这导致了粗糙的致密玻璃状涂层，其颜色有所不同：浅灰色YSZ和深灰色HCSZ。叶片背面的涂层厚度为90–95μm，压力面的涂层厚度为90μm。两种涂层均包含F-ZrO ₂阶段。涂层中出现了类似羽毛的微结构。YSZ面漆包含两种致密结构，以柱状和分支状结构表示，HCSZ层是不规则的微观结构，一起长出宽大的羽毛状结构。陶瓷面漆的层状微观结构归因于电子束沉积所特有的工艺特征。YSZ面漆具有以下显微硬度：背面3884 MPa，压力侧6052 MPa。HCSZ面漆的显微硬度低得多：背面1381 MPa，压力侧1679 MPa。组成复杂的涂层经受了161次热循环，标准涂层经历了138次热循环。先前的研究表明ZrO ₂ 钇亚组REM氧化物浓缩物的稳定化对TBC陶瓷面漆的微观结构设计很有希望。