Abstract
The main modes of isothermal oxidation of Fe-Cr-Al, Ni-Cr-Al, and Co-Cr-Al Alloys, containing 10–15 % or 26–30 % Cr and 0.9–1.3 % or 4.3–5.7% Al, in oxygen at 1000 and 1200° C are summarized. Where protectiveα-Al 2 O 3 scales always predominate, their ease of formation is in the order Fe-Cr-Al > Ni-Cr-Al > Co-Cr-Al. However, where catastrophic breakaway is possible, Ni-Cr-Al gives the most reliably protective scales, whereas Co-Cr-Al produces the most generally distributed breakaway or initially nonprotective scales, and Fe-Cr-Al the most locally catastrophic breakaway. The oxidation behavior is discussed in terms of the pertinent alloy and oxide parameters.
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References
F. H. Stott, Ph.D. Thesis, University of Manchester (1970).
M. G. Hobby, M.Sc. Thesis, University of Manchester (1968).
B. Chattopadhyay and G. C. Wood,Oxidation of Metals 2, 373 (1970).
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Stott, F.H., Wood, G.C. & Hobby, M.G. A comparison of the oxidation behavior of Fe-Cr-Al, Ni-Cr-Al, and Co-Cr-Al alloys. Oxid Met 3, 103–113 (1971). https://doi.org/10.1007/BF00603481
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DOI: https://doi.org/10.1007/BF00603481