Abstract
Aluminum-coated Fe-20Cr-(rare earth or yttrium) alloy foils were developed with oxidation resistance equivalent or superior to Fe-20Cr-5Al-(rare earth or yttrium) alloy foils. The coated foils were made by dipping Fe-20Cr sheet into a salt-covered aluminum bath and then rolling the sheet to foil. Oxidation resistance of the coated foil was enhanced by adding rare earths or yttrium to the Fe-20Cr substrate alloys to insure oxide adherence. Test results indicate that only sufficient addition to tie up sulfur as a stable sulfide is needed in the Fe-20Cr alloy. Aluminum-coated foils show lower oxide growth rates than similar Fe-Cr-Al alloys, most likely the result of fewer impurities (particularly Fe) is the coated foils' growing oxide scale.
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References
A. W. Funkenbusch, J. G. Smeggil, and N. S. Bornstein, Reactive element-sulfur interaction and oxide scale adherence.Metall. Trans. 16A(6), 1164–1166 (1985).
J. G. Smeggil, A. W. Funkenbusch, and N. S. Bornstein, A relationship between indigenous impurity elements and protective oxide scale adherence characteristics.Metall. Trans. 17A(6), 923–932 (1986).
J. L. Smialek, Adherent Al2O3 scales formed on undoped NiCrAl alloys.Metall. Trans. 18A(1), 164–167 (1987).
D. R. Sigler, The influence of sulfur on adherence of Al2O3 grown on Fe-Cr-Al alloys.Oxid. Met. 29(1/2), 23–43 (1988).
D. R. Sigler, Oxidation behavior of Fe-20Cr-5Al rare earth alloys in air and synthetic exhaust gas.Oxid. Met. 36(1/2), 57–80 (1991).
I. Barin and O. Knacke,Thermochemical Properties of Inorganic Substances (Springer-Verlag, Berlin, 1973).
I. Barin, O. Knacke, and O. Kubaschewski,Thermochemical Properties of Inorganic Substances Supplement (Springer-Verlag, Berlin, 1977).
K. A. Gschneidner and N. Kippenhan,Thermochemistry of the Rare Earth Carbides, Nitrides, and Sulfides for Steelmaking (Rare Earth Information Center, Institute for Atomic Research, Iowa State University, Ames Iowa, 1972).
C. S. Wukusick and J. F. Collins, An iron-chromium-aluminum alloy containing yttrium.Mater. Res. Stand. 4(12), 637–646 (1964).
G. Aggen and P. R. Borneman, Iron-Chromium-Aluminum Alloy and Article and Method Therefor. U.S. Patent 4,414,023, November 8, 1983.
O. Kubaschewski,Iron-Binary Phase Diagrams (Springer-Verlag, Berlin, 1982), pp. 57–59, 97–99.
J. F. Elliott, M. Gleiser, and V. Ramakrishna,Thermochemistry for Steelmaking Volume II (Addison-Wesley Publishing Co., Reading Massachusetts, 1963).
H. L. Grange and D. K. Hanink, Method of Coating Ferrous Metal with Aluminum or an Aluminum Alloy. U.S. Patent No. 2,569,097, September 25, 1951.
D. K. Hanink and A. L. Boegehold, Coating Steel by the ALDIP Process. Presented at the SAE Annual Meeting, Detroit, Missouri, January 12, 1953.
J. K. Tien and F. S. Pettit, Mechanism of oxide adherence on Fe-25Cr-4Al (Y or Sc) Alloys.Metall. Trans. 3(6), 1587–1599 (1972).
F. H. Stott, G. C. Wood, and F. A. Golightly, The isothermal oxidation behaviour of Fe-Cr-Al and Fe-Cr-Al-Y alloys at 1200°C. Corros. Sci.19, 869–887 (1979).
T. Amano, S. Yajima, and Y. Saito, High-temperature oxidation behavior of Fe-20Cr-4Al alloys with small additions of cerium.Trans. Jpn. Inst. Met. 20, 431–441 (1979).
F. A. Golightly, F. H. Stott, and G. C. Wood, The influence of yttrium additions on the oxide-scale adhesion to an iron-chromium-aluminum alloy.Oxid. Met. 10(3), 163–187 (1976).
W. J. Quadakkers, H. Holzbrecher, K. G. Briefs, and H. Beske, Differences in growth mechanisms of oxide scales formed on ODS and conventional wrought alloys.Oxid. Met. 32(1/2), 67–88 (1989).
G. Ben Abderrazik, G. Moulin, and A. M. Huntz, Growth mechanism of Al2O3 scales developed on Fe Cr Al alloys.Solid State Ionics 22, 285–294 (1987).
T. A. Ramanarayanan, M. Raghavan, and R. Petkovic-Luton, The characteristics of alumina scales formed on Fe-based yttria-dispersed alloys.J. Electrochem. Soc. 131(4), 923–931 (1984).
K. P. R. Reddy, J. L. Smialek, and A. R. Cooper,18O Tracer studies of Al2O3 scale formation on NiCrAl alloys.Oxid. Met. 17(5/6), 429–449 (1982).
Y. Oishi and W. D. Kingery, Self-diffusion of oxygen in single crystal and polycrystalline aluminum oxide.J. Chem. Phys. 33(2), 480–486 (1960).
D. J. Reed and B. J. Wuensch, Ion-probe measurement of oxygen self-diffusion in single-crystal Al2O3.J. Am. Cer. Soc. 63(1–2), 88–92 (1980).
Y. Oishi, K. Ando, and Y. Kubota, Self-diffusion of oxygen in single crystal alumina.J. Chem. Phys. 73(3), 1410–1412 (1980).
A. E. Paladino and W. D. Kingery, Aluminum ion diffusion in aluminum oxide.J. Chem. Phys. 37(5), 957–962 (1962).
W. R. Rao and I. B. Cutler, Effect of iron oxide on the sintering kinetics of Al2O3.J. Am. Cer. Soc. 56(11), 588–593 (1973).
G. W. Hollenberg and R. S. Gordon, Effect of oxygen partial pressure on the creep of polycrystalline Al2O3 doped with Cr, Fe, or Ti.J. Am. Cer. Soc. 56(3), 140–147 (1973).
P. A. Lessing and R. S. Gordon, Creep of polycrystalline alumina, pure and doped with transition metal impurities.J. Mater. Sci. 12, 2291–2302 (1977).
H. A. Wang and F. A. Kroger, Chemical diffusion in polycrystalline Al2O3.J. Am. Cer. Soc. 63(11–12), 613–619 (1980).
D. R. Sigler, Aluminum oxide adherence on Fe-Cr-Al alloys modified with group IIIB, IVB, VB, and VIB elements.Oxid. Met. 32(5/6), 337–355 (1989).
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Sigler, D.R. Oxidation resistance of aluminum-coated Fe-20Cr alloys containing rare earths or yttrium. Oxid Met 40, 295–320 (1993). https://doi.org/10.1007/BF00664495
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DOI: https://doi.org/10.1007/BF00664495