文献类型：期刊文献

英文题名：The crack behavior and delamination mechanisms of air plasma sprayed thermal barrier coatings under ultrasonic plasma jet at 1600 °C

作者：Cai, Huangyue[1];Shan, Xiao[1];Lu, Jie[1];Luo, Lirong[2];Cai, Zhenwei[3];Wang, Weize[4];Zhang, Xiancheng[4];Zhao, Xiaofeng[1]

机构：[1]Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China;[2]China Univ Geosci, Fac Mat Sci & Chem, Engn Res Ctr Nanogeo Mat, Minist Educ, Wuhan 430074, Peoples R China;[3]Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China;[4]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China

年份：2023

卷号：43

期号：9

起止页码：4136

外文期刊名：JOURNAL OF THE EUROPEAN CERAMIC SOCIETY

收录：;EI(收录号：20231113703008);WOS:【SCI-EXPANDED(收录号:WOS:001053868100001)】；

基金：Acknowledgements This work was supported by the National Natural Science Foundation of China (No. 52102072, 52102071) , and the Science Center for Gas Turbine Project (No. P2022 -B -IV -009-001) . The authors wish to thank the Science and Technology Commission of CPC Central Military Com- mission for their support, we also acknowledge Dr. Zihao Sun in Shanghai Jiao Tong University for assistance with the APS work.

语种：英文

外文关键词：Delamination mechanism; Plasma jet erosion; Thermal transient; Thermal barrier coatings

摘要：In this contribution, the performance and delamination mechanisms of air plasma sprayed (APS) yttria stabilized zirconia thermal barrier coatings (YSZ TBCs) under high intensity heat flux at 1600 & DEG;C was investigated. The plasma jet was adopted as the heat source with a combination of high temperature and high-speed jet-stream erosion. It was found that the YSZ topcoat would exfoliate when the vertical crack connected to the interior (interfacial/shear) cracks to form a free edge, which turned the mixed-mode buckle delamination into a mode I cracking. The thermo-mechanical analysis indicated that energy release rate associated with the transient cooling was the driving force for the interfacial cracks, while the vertical cracks were developed by the tensile stress during cooldown. The findings obtained in this study implied that the YSZ TBCs can be used for the thermal protection of combustor in ramjet engines.