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Oxidation of Metals

, Volume 12, Issue 3, pp 227–245 | Cite as

Oxidation-sulfidation behavior of iron-chromium-nickel alloys

  • M. Danielewski
  • K. Natesan
Article

Abstract

Oxidation-sulfidation studies of Fe-Cr-8Ni alloys with 4, 12, and 22 wt. % Cr were conducted at 750 and 875°C in multicomponent gas mixtures that contained CO, CO2, CH4, H2, and H2S. The reaction processes resulted in parabolic kinetics. A chromium concentration in the range 0–12 wt. % in the alloy had a negligible effect on the parabolic rate constant; however, the rate constant for the alloy with 22 wt. % Cr was significantly lower. For a given sulfur partial pressure, the oxygen partial pressures required for the formation of a continuous oxide layer in an Fe-22Cr-8Ni alloy were ∼102 to 103 times those calculated for Cr-Cr2O3 equilibrium at temperatures of 875 and 750° C, respectively.

Key words

oxidation sulfidation iron-chromium-nickel alloy thermochemical diagram parabolic rate constant 

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Copyright information

© Plenum Publishing Corporation 1978

Authors and Affiliations

  • M. Danielewski
    • 1
  • K. Natesan
    • 1
  1. 1.Materials Science DivisionArgonne National LaboratoryArgonne

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