FEM ANALYSIS OF THERMAL STRESSES IN GRADIENT THERMAL BARRIER COATINGS PRODUCED BY EB-PVD
来源期刊：Acta Metallurgica Sinica2001年第6期
论文作者：H.B.Xu H.B.Guo S.K.Gong
Key words：EB-PVD; gradient thermal barrier coating; finite element method;
Abstract: Gradient thermal barrier coatings (GTBCs) produced by co-deposition of mixtures ofAl-Al2 O3-YSZ onto metallic bond coat exhibited longer lifetimes than the two-layeredTBCs. The finite element method (FEM) numerical models were used to investigatestress and strain states in the GTBCs and traditional two-layered TBCs as they cooledto 750℃ from a stress-free state at 850℃.
H.B.Xu1，H.B.Guo1，S.K.Gong1
(1.Department of Materials Science & Engineering, Beijing University of Aeronautics andAstronautics, Beijiug 100083, China)
Abstract:Gradient thermal barrier coatings (GTBCs) produced by co-deposition of mixtures ofAl-Al2 O3-YSZ onto metallic bond coat exhibited longer lifetimes than the two-layeredTBCs. The finite element method (FEM) numerical models were used to investigatestress and strain states in the GTBCs and traditional two-layered TBCs as they cooledto 750℃ from a stress-free state at 850℃.
Key words:EB-PVD; gradient thermal barrier coating; finite element method;
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