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Two commercial iron-chromium alloys (AISI 446 and AISI 502) were exposed to elevated temperature hydrogen sulfide and chloride environments. Scale formation was studied using infrared (IR) and Raman spectroscopy as the principle analysis methods. The scales formed are discussed in terms of temperature of formation, duration of exposure, and alloy composition. Comparisons are made to scales formed on pure iron and chromium in the same environments.
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Fabis et al. (1982) studied this question.
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