文献类型：期刊文献

英文题名：Investigation of CMAS resistance of sacrificial plasma-sprayed mullite-YSZ protective layer on 8YSZ thermal barrier coating

作者：Fang, Huanjie[1];Wang, Weize[1];Huang, Jibo[1];Ye, Dongdong[1]

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

年份：2020

卷号：173

外文期刊名：CORROSION SCIENCE

收录：;EI(收录号：20202308786930);WOS:【SCI-EXPANDED(收录号:WOS:000557898600028)】；

基金：This research is sponsored by the National Natural Science Foundation of China (Grant No. 51775189), Science and Technology Commission of Shanghai Municipality Project (16DZ2260604).

语种：英文

外文关键词：Thermal barrier coatings (TBCs); Calcium-magnesium-alumina-silicate (CMAS) corrosion; Protective layer; Contact angle

摘要：A double-ceramic-layer (DCL) plasma-sprayed YSZ coating comprised of a mullite-YSZ protective layer towards suppressing CMAS attack was prepared in this study. The resistance of DCL coating to molten CMAS at 1300 degrees C was systematically investigated through phase structure as well as microstructural analysis. It was clearly revealed that the DCL coating exhibited an enhanced CMAS resistance owing to the formation of CaAl2Si2O8 layer. After 4 hours of exposure, YSZ coatings have been significantly penetrated (at least 250 mu m), whereas correspondingly no CMAS was found in DCL coatings; the penetration depth in DCL coatings increased to approximately 100 mu m as the duration last up to 12 h. In addition, the DCL coating performed a larger contact angle than that of YSZ coatings within the same time, promoting the resistance to CMAS.