Abstract

Raman spectra of FeO, Fe₃O₄, α-Fe₂O₃, α-FeOOH, and γ-FeOOH, the common products of iron oxidation, have been measured. The spectra of FeO and Fe₃O₄ appear to be identical. Armco iron oxidized in air at 250°C was examined by Raman spectroscopy after varying periods of exposure and the surface film was found to contain Fe₃O₄ and α-Fe₂O₃.

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