Abstract
The role of aluminum and titanium on the oxidation process of a nickel-base superalloy containing 18.89%Cr, 2.13%Al, and 2.41%Ti was investigated in steam at 800°C. A Cr2O3-rich scale was formed on the alloy surface. Aluminum formed only internal oxides below the Cr2O3-rich scale. On the other hand, titanium formed not only internal oxides but also oxides in the scale and the granular particles of TiO2 outside the scale. Agglomeration of the TiO2 particles also occurred. The oxidation behavior of aluminum and titanium was discussed from thermodynamic and kinetics aspects.
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References
R. Watanabe and T. Kuno,Tetsu-To-Hagane 61, 2274 (1975)
G. R. Wallwork,Rep. Prog. Phys. 39, 401 (1976)
G. R. Wallwork and Z. Hed,Oxid. Met. 3, 171, 213, 229 (1971)
K. Shimokawa,Trans. ISIJ 19, 291 (1979)
F. Abe, H. Araki, H. Yoshida, M. Okada, and R. Watanabe,Corr. Sci. 21, 819 (1981)
F. Abe and H. Yoshida,Z. Metallkde. 76, 219 (1985)
F. Abe, H. Araki, H. Yoshida, and M. Okada,Trans. ISIJ 25, 424 (1985)
O. Kubaschewski, E. L. Evance, and C. B. Alcock,Metallurgical Thermochemistry (Pergamon Press, New York, 1967), 4th edition.
A. E. Paladino and W. D. Kingery,J. Chem. Phys. 37, 957 (1962)
D. L. Venkatsu and L. E. Potet,Mat. Sci. Eng. 5, 258 (1969/70)
W. C. Hagel and A. U. Seybolt,J. Electrochem. Soc. 108, 1146 (1961)
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Abe, F., Araki, H., Yoshida, H. et al. The role of aluminum and titanium on the oxidation process of a nickel-base superalloy in steam at 800°C. Oxid Met 27, 21–36 (1987). https://doi.org/10.1007/BF00656727
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DOI: https://doi.org/10.1007/BF00656727