Abstract
Samples of a pure Fe-26%Cr alloy were sputter-coated with a 4-nm layer of CeO2 or Y2O3, then oxidized at 900°C in 5×10−3 torr of oxygen. The oxide scale was removed from the substrate by dissolution of the alloy substrate in a solution of iodine in anhydrous methanol and examined in, a transmission electron microscope to determine the microstructure of the oxide and the phases present in the scale. the phases CeCrO3 (space group 62,Pnma and space group 221,\(Pm\bar 3m\)), YCrO3 (space group 62,Pnma), and Y2O3 (space group 164,\(P\bar 3m1\)) were found in the oxide scale in the initial stages of oxidation. The relevance of these species in the reactive-element effect is discussed.
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M. J. Graham, D. F. Mitchell, J. Shen, P. Papaiacovou, and R. J. Hussey, inCorrosion and Particle Erosion at High Temperatures, V. Srinivasan and K. Vedula, eds. (The Minerals, Metals & Materials Society, 1989), p. 563.
Y. LePage and D. A. Downham,J. Electron Microsc. Tech. 18, 437 (1991).
A. U. Seybolt,Corros. Sci. 6, 263 (1966).
S. J. Schneider, R. S. Roth, and J. L. Waring,J. Res. Nat. Bur. Stds. A 65A(4), 345 (1961).
H. W. Tawancy,J. Mater. Sci. Lett. 12, 1015 (1993).
S. Geller and E. A. Wood,Acta Crystallogr. 9, 563 (1956).
D. A. Downham, M. J. Graham, D. F. Mitchell, and R. J. Hussey, inProc. Int., Symp. on High Temperature Oxidation and Sulfidation Processes, Ontario Canada, 29th Ann. Conf. of Metallurgists of CIM, J. D. Embury ed. (Pergamon Press, New York, 1990), p. 101.
A. Leonov et al.,Izv. Akad. Nauk. USSR 2(3), 517 (1966).
T. N. Rhys-Jones and H. J. Grabke,Mater. Sci. Technol. 4, 446 (1988).
S. Quezel-Ambrunaz and M. Mareschal,Bull. Soc. Minéral. Crist. 86, 204 (1963).
K. Przybylski and G. Yurek,Mater. Sci. Forum 43, 1 (1989).
S. B. Shendye and D. A. Downham,Oxid. Met. 43, 5/6, 435 (1995).
K. A. G. Schneidner, Jr., N. Kippenhan, and O. D. McMasters, Report #IS-RIC-6, Rare Earth Information Center, Institute for Atomic Research, Iowa State University, Ames, IA.
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Downham, D.A., Shendye, S.B. Observations of chromium-oxide films containing cerium and yttrium using transmission electron microscopy. Oxid Met 43, 411–433 (1995). https://doi.org/10.1007/BF01046891
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DOI: https://doi.org/10.1007/BF01046891