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http://dx.doi.org/10.4191/KCERS.2006.43.7.415

Numerical Simulation of Effects of TGO Growth and Asperity Ratio on Residual Stress Distributions in TC-BC-TGO Interface Region for Thermal Barrier Coatings  

Jang, Jung-Chel (Department of Material Science and Engineering, Hanyang University)
Choi, Sung-Churl (Department of Material Science and Engineering, Hanyang University)
Publication Information
Journal of the Korean Ceramic Society / v.43, no.7, 2006 , pp. 415-420 More about this Journal
Abstract
The residual stresses in the interface region of the Thermal Barrier Coating (TBC)/Thermally Grown Oxide (TGO)/Bond Coat (BC) were calculated on the TBC-coated superalloy samples using a Finite Element Method (FEM). It was found that the stress distribution of the interface boundary was dependent upon mainly the geometrical shape or its aspect ratio and the thickness of TGO layer, which was formed by growth and swelling behavior of oxide layer. Maximum compressive residual stress in the TBC/TGO interface is higher than that of the TGO/bond coat interface, and the tensile stress had nothing to do with change of an aspect ratio. The compressive residual stresses in the TBC/TGO and TGO/bond coat interface region increased gradually with the TGO growth.
Keywords
Thermal barrier coatings; Thermally grown oxide; Thermal damage; Residual stress;
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1 F. Kroupa and J. Plesek, 'Nonlinear Elastic Behavior in Compression of Thermally Sprayed Materials,' Mater. Sci. Eng. A, 328 [1-2] 1-7 (2002)   DOI   ScienceOn
2 G. C. Chang and R. A. Miller, 'Behavior of Thermal Barrier Coatings for Advanced Gas Turbine Blades,' Surface and Coating Technology, 30 [1] 13-28 (1987)   DOI   ScienceOn
3 E. Tzimas, H. Mullejans, S. D. Peteves, J. Bressers, and W. Stamm, 'Failure of Thermal Barrier Coating Systems under Cyclic Themomechanical Loading,' Acta Mater., 48 4699- 707 (2000)   DOI   ScienceOn
4 G. J. Petrus and B. L. Ferguson, 'A Software Tool to Design Thermal Barrier Coatings : A Technical Note,' J. Thermal Spray Tech., 6 [1] 29-34 (1997)   DOI
5 M. J. Pindera, J. Aboudi, and S. M. Arnold, 'Analysis of Plasma-Sprayed Thermal Barrier Coatings with Homogeneous and Heterogeneous Bond Coats under Spatially Uniform Cyclic Thermal Loading,' NASA/TM-2003-210803, Dec., 2003
6 R. C. Hendricks and G. McDonald, 'The Effect of Annealing on the Creep of Plasma Sprayed Ceramics,' pp. 13-6, Presented in Seventh Annual Conference on Ceramics and Advances Materials, Cocoa Beach, Florida, Jan., 1983
7 C. H. Hsueh and E. R. Fuller, Jr., 'Residual Stresses in Thermal Barrier Coatings : Effects of Interface Asperity Curvature/Height and Oxide Thickness,' Mater. Sci. Eng. A, 283 [1-2] 46-55 (2000)   DOI   ScienceOn
8 X. Y. Gong and D. R. Clarke, 'On the Measurement of Strain in Coatings Formed on a Wrinkled Elastic Substrate,' Oxidation of Metals, 50 [5/6] 355-77 (1998)   DOI
9 M. Levit, I. Grimberg, and B. Z. Weiss, 'Residual Stresses in Ceramic Plasma-Sprayed Thermal Barrier Coatings : Measurement and Calculation,' Mater. Sci. Eng. A, 206 [1] 30-8 (1996)   DOI   ScienceOn
10 A. G. Evans, D. R. Mumm, J. W. Hutchinson, G. H. Meier, and F. S. Pettit, 'Mechanisms Controlling the Durability of Thermal Barrier Coatings,' Progress in Mater. Sci., 46 505- 53 (2001)   DOI   ScienceOn
11 M. Martena, D. Botto, P. Fino, S. Sabbadini, M. M. Gola, and C. Badini, 'Modelling of TBC System Failure : Stress Distribution as a Function of TGO Thickness and Thermal Expansion Mismatch,' Engineering Failure Analysis, 13 [3] 409-26 (2006)   DOI   ScienceOn
12 J. Rosler, M. Baker, and M. Volgmann, 'Stress State and Failure Mechanisms of Thermal Barrier Coatings : Role of Creep in Thermally Grown Oxide,' Acta Mater., 49 3659-70 (2001)   DOI   ScienceOn
13 A. M. Freborg, B. L. Ferguson, W. J. Brindley, and G. J. Petrus, 'Modeling Oxidation Induced Stresses in Thermal Barrier Coatings,' Mater. Sci. Eng. A, 245 [1] 182-90 (1998)   DOI   ScienceOn