Abstract
The morphology and composition of scales formed on unalloyed chromium in atmospheres containing SO2 at high temperatures have been studied. SEM images show chromium sulfides formed at the metal/scale interface. The results indicate that SO2 may penetrate the scale as molecules, but the rate of this penetration is low. At 600°C formation of Cr2(SO4)3 is also observed by SEM on the scale surface formed in SO2+O2/SO3 mixtures.
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Andersen, A.G., Kofstad, P. Reactions of chromium in SO2-containing atmospheres. Oxid Met 43, 301–315 (1995). https://doi.org/10.1007/BF01047032
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DOI: https://doi.org/10.1007/BF01047032