In this paper, the results of the investigation of the
morphology and phase composition of the oxide layers formed on the surface of
the 1H18N9T acid proof steel foil by confocal Raman micro-spectroscopy with
optical microscopy, SEM, XRD and TEM-EDS-SADP are presented. The foil oxidation
was performed by thermo-programmed heating up to 823, 1023 or 1113K and
next annealing at the final temperatures in the air flow for 48h,4h and 4h,
respectively. The great advantages of the use of the Raman spectroscopy for the
phase determining in the oxide layers on the acid proof steel foil are shown.
Moreover the possibility of applying the optical microscopy for investigation
of the surface morphology of both the initial steel foil and the oxide layers
is pointed out.
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