Abstract
The oxidation behavior of a single-crystal (SC) Ni-base superalloy was studied over the temperature range from 1000–1150°C and analysed by TGA, XRD, EDAX, and SEM. The results indicated that the SC Ni-base superalloy exhibited parabolic oxidation kinetics, which were controlled by the growth of the inner α-Al2O3 layer. A mixed scale formed on the SC Ni-base superalloy after prolonged oxidation. The scale consisted of an outer layer of spinel, a sublayer of mainly α-Al2O3 with small amount of spinel adjoined by a very thin and even discontinuous layer of CrTaO4-rich oxide, and an inner α-Al2O3 layer. The inner α-Al2O3 layer provided good protection. No internal oxides or nitrides were observed below the inner α-Al2O3 layer after 1000 hr at 1000°C, and after 200 hr at 1100 and 1150°C.
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REFERENCES
M. H. Li, X. F. Sun, J. G. Li, Z.Y. Zhang, T. Jin, H. R. Guan, and Z. Q. Hu, Oxid. Met. 59, 591(2003).
J. Huang, H. Fang, X. Fu, F. Huang, H. Wan, Q. Zhang, S. Deng, and J. Zu, Oxid. Met., 53, 273(2000).
T. F. An, H. R. Guan, X. F. Sun, and Z. Q. Hu, Oxid. Met., 54, 301(2000).
M. A. Smith, W. E. Frazier, and B. A. Pregger, Mater. Sci. Eng. A203, 388(1995).
J. Litz, A. Rahmel, M. Schorr, and J. Weiss, Oxid. Met. 32, 167(1989).
B. Pieraggi, Mater. Sci. Eng. 88, 199(1987).
S. Esmaeili, C. C. Engler-Pinto, Jr., B. Ilschner, and F. Rézaï-Aria, Scripta Mater. 32, 1777(1995).
L. Kou and J. R. Selman, J. Appl. Electrochem. 30, 1433(2000).
D. Caplan and M. Cohen, J. Electrochem. Soc. 108, 438(1961).
C. S. Tedmon, J. Electrochem. Soc. 113, 766(1966).
S. J. Geng, F. H. Want, and S. L. Zhu, Oxid. Met. 5, 231(2002).
U. Krupp and H.J. Christ, Metall. Mater. Trans. 31A, 47(2000).
M. H. Li, Z. Y. Zhang, X. F. Sun, H. R. Guan, W. Y. Hu, and Z. Q. Hu, Surf. Coat. Technol. 165, 241(2003).
A. Maricocchi, A. Bartz, and D. Wortman, J. Thermal. Spray Technol. 6, 193(1997).
M. H. Li, Z. Y. Zhang, X. F. Sun, H. R. Guan, W. Y. Hu, and Z. Q. Hu, Oxid. Met. 58, 499(2002).
J. D. Kuenzly and D. L. Douglass, Oxid. Met. 8, 139(1974).
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Li, M., Sun, X., Jin, T. et al. Oxidation Behavior of a Single-Crystal Ni-Base Superalloy in Air—II: At 1000, 1100, and 1150°C. Oxidation of Metals 60, 195–210 (2003). https://doi.org/10.1023/A:1024629716452
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DOI: https://doi.org/10.1023/A:1024629716452