文献类型：期刊文献

英文题名：Evolution of microstructure, thermophysical and mechanical properties and wetting behavior of plasma-sprayed Yb2O3 and Y2O3 co-stabilized ZrO2 coatings during high-temperature exposure and CMAS corrosion

作者：Liu, Yangguang[1];Zhang, Wenkang[1];Wang, Weize[1,2];Liu, Wei[1];Yang, Ting[1];Li, Kaibin[1];Tang, Zhongxiang[1];Liu, Chen[1];Zhang, Chengcheng[3]

机构：[1]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[2]Shanghai Inst Aircraft Mech & Control, Shanghai 200092, Peoples R China;[3]Aecc Commercial Aircraft Engine Co Ltd, Shanghai 200241, Peoples R China

年份：2024

卷号：477

外文期刊名：SURFACE & COATINGS TECHNOLOGY

收录：;EI(收录号：20240215362642);WOS:【SCI-EXPANDED(收录号:WOS:001152905600001)】；

基金：This research was sponsored by the National Natural Science Foundation of China (52175136, 52130511) , Science Center for Gas Turbine Project (P2021 -A -IV -002) , Shanghai Joint Innovation Program in the Field of Commercial Aviation Engines, National High Technology Research and Development Program of China (2021YFB3702202) , Shanghai Gaofeng Project for University Academic Program Development, and Key Research and Development Projects in Anhui Province (2022a05020004) .

语种：英文

外文关键词：Thermal barrier coatings (TBCs); Calcium-magnesium-alumina-silicate (CMAS); High-temperature exposure; Thermophysical and mechanical properties; Wetting behavior

摘要：Doping rare-earth elements has been regarded as one of the potential ways to enhance the comprehensive performance of thermal barrier coatings. In the study, the microstructure, thermophysical and mechanical properties, and wetting behavior of Yb2O3-Y2O3 co-stabilized ZrO2 (YbYSZ) were evaluated in detail as compared with Y2O3 stabilized ZrO2 (YSZ) counterpart. During high-temperature exposure and CMAS attack at 1300 degrees C x 32 h, the samples did not undergo phase transformation, while samples underwent phase transformation under CMAS corrosion. In the cross-section of CMAS penetration, YbYSZ penetration depth decreases by more than 20 % compared to YSZ, and the maximum degradation depth of YSZ and YbYSZ is 27.37 mu m and 11.28 mu m. Additionally, the thermal conductivity of YbYSZ is lower than that of YSZ. During high-temperature exposure, the hardness and elastic modulus of YSZ show a more significant upward trend than that of YbYSZ. During CMAS corrosion, the hardness and elastic modulus offer a downward trend, with YbYSZ value higher than that of YSZ. The samples were held at 1300 degrees C x 180 s, the contact angle difference between YSZ (59.2 degrees) and YbYSZ (99.9 degrees) is the largest. The YbYSZ coating exhibits better performance on resistibility to CMAS corrosion and high-temperature exposure.