Abstract
Examination of wustite single crystals reduced in CO/CO2 and H2/H2O gas mixtures has shown that in all cases a dense iron layer is formed initially on the oxide surface and that the porous growth of iron which is obtained under certain experimental conditions occurs as a direct result of the breakdown of this initial dense iron layer. Possible mechanisms of the iron layer breakdown are examined and compared with the experimental observations. A qualitative model of the breakdown process involving the nucleation of gas bubbles and the expansion of these bubbles in the iron layer is presented.
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Formerly Postdoctoral Fellow at the Department of Mining and Metallurgical Engineering, University of Queensland, St. Lucia, Brisbane, Australia
An erratum to this article is available at http://dx.doi.org/10.1007/BF02667525.
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John, D.H.S., Matthew, S.P. & Hayes, P.C. The breakdown of dense iron layers on wustite in CO/CO2 and H2/H2O systems. Metall Trans B 15, 701–708 (1984). https://doi.org/10.1007/BF02657292
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DOI: https://doi.org/10.1007/BF02657292