Abstract
MASS transport in oxide scales by dislocation and grain boundary diffusion may predominate over lattice diffusion at moderate temperatures. Such localized diffusion may result in localized attack leading to a more rapid deterioration of the metal. The identification and study of the localized processes are made difficult by their small scale. Some localized and rapid diffusion processes present in the gaseous oxidation of iron, however, produce fine growths of α-Fe2O3 which can be uniquely distinguished in the electron microscope. Information about the localized diffusion and other processes causing these growths can be inferred from the details of oxidation experiments and microscope observations.
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References
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TALLMAN, R., GULBRANSEN, E. Dislocation and Grain Boundary Diffusion in the Growth of α-Fe2O3Whiskers and Twinned Platelets peculiar to Gaseous Oxidation. Nature 218, 1046–1047 (1968). https://doi.org/10.1038/2181046a0
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DOI: https://doi.org/10.1038/2181046a0
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