Microstructure Dependence of Effective Thermal Conductivity of EB-PVD TBCs

doi:10.3390/ma14081838

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Microstructure Dependence of Effective Thermal Conductivity of EB-PVD TBCs
	Qiu SY(邱世毅)1,2; Wu CW(吴臣武)1; Huang CG(黄晨光)1; Ma, Yue 2; Guo, Hong-Bo 2
刊名	MATERIALS
	2021-04-01
卷号	14 期号:8 页码:17
关键词	thermal barrier coatings electron beam physical vapor deposition thermal conductivity finite element simulation
DOI	10.3390/ma14081838
通讯作者	Wu, Chen-Wu(chenwuwu@imech.ac.cn) ; Ma, Yue(mayue@buaa.edu.cn)
英文摘要	Microstructure dependence of effective thermal conductivity of the coating was investigated to optimize the thermal insulation of columnar structure electron beam physical vapor deposition (EB-PVD coating), considering constraints by mechanical stress. First, a three-dimensional finite element model of multiple columnar structure was established to involve thermal contact resistance across the interfaces between the adjacent columnar structures. Then, the mathematical formula of each structural parameter was derived to demonstrate the numerical outcome and predict the effective thermal conductivity. After that, the heat conduction characteristics of the columnar structured coating was analyzed to reveal the dependence of the effective thermal conductivity of the thermal barrier coatings (TBCs) on its microstructure characteristics, including the column diameter, the thickness of coating, the ratio of the height of fine column to coarse column and the inclination angle of columns. Finally, the influence of each microstructural parameter on the mechanical stress of the TBCs was studied by a mathematic model, and the optimization of the inclination angle was proposed, considering the thermal insulation and mechanical stress of the coating.
分类号	二类
资助项目	National Natural Science Foundation of China[11572327] ; National Natural Science Foundation of China[51971013] ; National Natural Science Foundation of China[U1537212] ; National Natural Science Foundation of China[51471019] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA17030100] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA17030200]
WOS关键词	PHYSICAL VAPOR-DEPOSITION ; BARRIER COATINGS ; THERMOPHYSICAL PROPERTIES ; ZIRCONIA ; TEMPERATURE ; GROWTH ; 7YSZ
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
语种	英语
WOS记录号	WOS:000644524200001
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences
其他责任者	Wu, Chen-Wu ; Ma, Yue
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/86587]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 2.Beihang Univ BUAA, Beijing Key Lab Adv Funct Mat & Thin Film Technol, Sch Mat Sci & Engn, Beijing 100191, Peoples R China;
推荐引用方式 GB/T 7714	Qiu SY,Wu CW,Huang CG,et al. Microstructure Dependence of Effective Thermal Conductivity of EB-PVD TBCs[J]. MATERIALS,2021,14(8):17.
APA	邱世毅,吴臣武,黄晨光,Ma, Yue,&Guo, Hong-Bo.(2021).Microstructure Dependence of Effective Thermal Conductivity of EB-PVD TBCs.MATERIALS,14(8),17.
MLA	邱世毅,et al."Microstructure Dependence of Effective Thermal Conductivity of EB-PVD TBCs".MATERIALS 14.8(2021):17.