Abstract
The reactions of cobalt, iron and nickel in SO2 atmospheres are reviewed and compared. A mixed oxide-sulfide product layer is observed in all cases. Cobalt and nickel exhibit similar behavior. The observed rates are near the sulfidation rates, and the reaction rate is strongly influenced by the outward diffusion of metal through an interconnected sulfide network. A continuous interconnected sulfide is not observed in the oxide-sulfide scales formed on iron, and the reaction rates are more difficult to summarize. The differences and similarities among the three metals are explained in terms of the absence of scale-gas equilibrium and the ratio of the metal diffusivity in the corresponding oxide and sulfide.
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© 1985 Plenum Press, New York
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Jacobson, N.S., Worrell, W.L. (1985). The Reactions of Cobalt, Iron and Nickel in SO2 Atmospheres: Similarities and Differences. In: Simkovich, G., Stubican, V.S. (eds) Transport in Nonstoichiometric Compounds. NATO ASI Series, vol 129. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-2519-2_34
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DOI: https://doi.org/10.1007/978-1-4613-2519-2_34
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