文献类型：期刊文献

英文题名：Structural optimization for the thermal conductivity and thermal cycling behavior in thermal barrier coatings and analysis of thermomechanical properties by computational investigation

作者：Liu, Yangguang[1];Zhang, Wenkang[1];Wang, Weize[1,2];Liu, Wei[1];Yang, Ting[1];Li, Kaibin[1];Li, Hongchen[1];Liu, Shainan[1];Zhang, Xiaoqin[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：488

外文期刊名：SURFACE & COATINGS TECHNOLOGY

收录：;EI(收录号：20240104387);WOS:【SCI-EXPANDED(收录号:WOS:001260561200001)】；

基金：This research was sponsored by National High Technology Research and Development Program of China (2023YFB3711200) , 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, 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：Porous thermal barrier coatings; Plasma co-spraying technology; Structural optimization; Thermal conductivity; Thermal cycling behavior

摘要：The microstructure affects the service life and performance in thermal barrier coatings (TBCs). A series of yttriastabilized zirconia (YSZ) coatings with embedded micro-agglomerated particles (EMAP) are prepared using plasma co-spraying technology. The thermal conductivity and thermal cycling behavior between EMAP coatings with various transfer speeds and traditional YSZ coating are explored. Experimental and finite element simulations are conducted to explore the effect of pore structure characteristics on the thermomechanical properties of coatings. Results show that the thermal conductivity of EMAP coatings is lower than that of traditional YSZ coating, with EMAP coating deposited at 200 mm/s transfer speed having the lowest thermal conductivity. The thermal cycling life of EMAP coatings at transfer speeds of 600 mm/s and 800 mm/s is improved by 20.00 % and 58.33 % compared to traditional YSZ coating. This paper suggests the mechanism of excellent thermal insulation and service life of porous coatings.