Abstract
A TEM and STEM examination has been carried out of cross-sectioned specimens of convoluted chromia scale formed by oxidizing chromium at 950° C. Sulfur was detected at the oxide/metal interface and the oxide grain boundaries (apart from low-angle grain boundaries), but not within the oxide grains. These results are consistent with the “sulfur effect” theory.
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Fox, P., Lees, D.G. & Lorimer, G.W. Sulfur segregation during the high-temperature oxidation of chromium. Oxid Met 36, 491 (1991). https://doi.org/10.1007/BF01151594
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DOI: https://doi.org/10.1007/BF01151594