Abstract
The corrosion behavior of iron at 900°C in gas mixtures of O2/N2, H2O/O2/N2, HCl/H2O/O2/N2, H2O/N2, and HCl/H2O/N2 was observed. Parabolic oxide-scaling kinetics were observed in all cases, except HCl/H2O/N2 containing 2.5% HCl. This gas produced linear weight-loss kinetics caused by FeCl2 vaporization. Lower HCl concentrations in H2O/N2 led to no chloride formation. In all cases, the reaction products reflected a close approach to local equilibrium between scale and gas. The presence of H2O led to oxide-scale-surface faceting, and in the presence of free oxygen, to acceleration of the sublayer growth of FeO.
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Sato, Y., Young, D.J. High-Temperature Corrosion of Iron at 900°C in Atmospheres Containing HCl and H2O. Oxidation of Metals 55, 243–260 (2001). https://doi.org/10.1023/A:1010356010096
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DOI: https://doi.org/10.1023/A:1010356010096