文献类型：期刊文献

英文题名：Phase stability, thermal shock behavior and CMAS corrosion resistance of Yb2O3-Y2O3 co-stabilized zirconia thermal barrier coatings prepared by atmospheric plasma spraying

作者：Fang, Huanjie[1];Wang, Weize[1];Yang, Zining[1];Yang, Ting[1];Wang, Yihao[1];Huang, Jibo[2];Ye, Dongdong[3]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Guangdong Acad Sci, Inst New Mat, Natl Engn Lab Modern Mat Surface Engn Technol, Guangzhou 510650, Peoples R China;[3]Anhui Polytech Univ, Sch Mech Engn, Wuhu 241000, Peoples R China

年份：2021

卷号：427

外文期刊名：SURFACE & COATINGS TECHNOLOGY

收录：;EI(收录号：20214511132010);WOS:【SCI-EXPANDED(收录号:WOS:000718020900022)】；

基金：This research is sponsored by the National Natural Science Foundation of China (Grant No. 51775189), Shanghai Aerospace Science and Technology Innovation Fund (SAST2019056), Shanghai Joint Innovation Program in the Field of Commercial Aviation Engines.

语种：英文

外文关键词：Thermal barrier coatings; Rare-earth element doping; Plasma spraying; Phase stability; Thermal shock behavior; CMAS resistance

摘要：Rare-earth element doping has been extensively employed as one of the effective methods to enhance the durability of thermal barrier coatings (TBCs). In present study, ytterbia and yttria co-stabilized zirconia (YbYSZ) coatings and corresponding double-ceramic-layer (DCL) coatings comprised of a dense layer were produced by atmospheric plasma spraying. And the service capability including phase stability, thermal shock behavior and CMAS resistance were systemically evaluated. After heat treatment at 1500 degrees C for various durations, less monoclinic phase can be found in YbYSZ specimen, indicating excellent phase stability at high temperature. In the thermal shock test, the conventional YbYSZ coatings show a longest thermal shock lifetime, which increases by similar to 10% as compared with that of conventional yttria-stabilized ZrO2 (YSZ) coatings. CMAS corrosion resistance of DCL coatings was studied using an isothermal corrosion test at 1300 degrees C. The results show that YbYSZ systems with a dense layer performed a high resistibility to CMAS corrosion, and less damage can be observed in coatings as well as smaller infiltration depth within the same time.