Abstract
FURSEY1 recently reported that oxide films stripped from the surface of a specimen of mild steel immediately after electropolishing and washing were of the form Fe3O4. These films were shown to be barely visible and featureless when observed under high magnification in the electron microscope.
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References
Fursey, A., Nature, 207, 747 (1965).
Irani, J. J. (personal communication).
Index to the Powder Diffraction File (Amer. Soc. Test. and Materials, Philadelphia).
Keown, S. R., and Dyson, D. J. (unpublished results).
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DYSON, D., KEOWN, S. Detection of Magnetite as a Surface Impurity on Thin Foils of Ferrous Materials. Nature 209, 707–708 (1966). https://doi.org/10.1038/209707a0
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DOI: https://doi.org/10.1038/209707a0
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