Development of Intermixed Zones of Alumina/Zirconia in Thermal Barrier Coating Systems
作者： M.J. Stiger , N.M. Yanar , R.W. Jackson , S.J. Laney , F.S. Pettit
DOI: 10.1007/S11661-007-9117-6
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摘要: The mechanisms whereby intermixed zones of alumina and zirconia are formed at the interface between metallic bond coat ceramic top (yttria-stabilized zirconia) in thermal barrier coating systems have been investigated. results lead to following mechanism for formation zones. predominant zone involves a metastable polymorph (θ or γ) during TBC deposition, with significant amount dissolved it. outward growth also begins incorporate particles, which initiates zone. Upon exposure, TGO continues grow outward, extending zone, eventually transforms equilibrium α-Al2O3. transformation α-Al2O3 an increase volume fraction as it is rejected from solution. Once appears, subsequent produces columnar without second phase. When α-alumina was preformed on coat, prior no Pt-modified aluminide coats.
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sci-hub.se 参考文章(14)
N. M. Yanar, M. J. Stiger, M. G. Topping, F. S. Pettit, G. H. Meier, Thermal barrier coatings for the 21st century Zeitschrift Fur Metallkunde. ,vol. 90, pp. 1069- 1078 ,(1999)
M. R. Brickey, J. L. Lee, Structural and chemical analyses of a thermally grown oxide scale in thermal barrier coatings containing a platinum-nickel-aluminide bondcoat Oxidation of Metals. ,vol. 54, pp. 237- 254 ,(2000) , 10.1023/A:1004646227870
Ihsan Barin, Thermochemical data of pure substances ,(1989)
Neil Birks, Gerald H. Meier, Frederick S. Pettit, Introduction to the High-Temperature Oxidation of Metals Cambridge University Press. ,(2006) , 10.1017/CBO9781139163903
Olga Fabrichnaya, Fritz Aldinger, Assessment of thermodynamic parameters in the system ZrO2–Y2O3–Al2O3 Zeitschrift Fur Metallkunde. ,vol. 95, pp. 27- 39 ,(2004) , 10.3139/146.017909
V.K. Tolpygo, D.R. Clarke, Microstructural study of the theta-alpha transformation in alumina scales formed on nickel-aluminides Materials at High Temperatures. ,vol. 17, pp. 59- 70 ,(2000) , 10.1179/MHT.2000.011
S Laxman, B Franke, B.W Kempshall, Y.H Sohn, L.A Giannuzzi, K.S Murphy, Phase transformations of thermally grown oxide on (Ni,Pt)Al bondcoat during electron beam physical vapor deposition and subsequent oxidation Surface & Coatings Technology. ,vol. 177, pp. 121- 130 ,(2003) , 10.1016/J.SURFCOAT.2003.08.072
N.M Yanar, G.H Meier, F.S Pettit, The influence of platinum on the failure of EBPVD YSZ TBCs on NiCoCrAlY bond coats Scripta Materialia. ,vol. 46, pp. 325- 330 ,(2002) , 10.1016/S1359-6462(01)01222-2
N. M. Yanar, F. S. Pettit, G. H. Meier, Failure characteristics during cyclic oxidation of yttria stabilized zirconia thermal barrier coatings deposited via electron beam physical vapor deposition on platinum aluminide and on NiCoCrAlY bond coats with processing modifications for improved performances Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 37, pp. 1563- 1580 ,(2006) , 10.1007/S11661-006-0100-4
V. Jayaram, C.G. Levi, T. Whitney, R. Mehrabian, Characterization of Al2O3ZrO2 powders produced by electrohydrodynamic atomization Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 124, pp. 65- 81 ,(1990) , 10.1016/0921-5093(90)90336-2