Advertisement

Oxidation of Metals

, Volume 1, Issue 1, pp 93–120 | Cite as

High-temperature sulfur corrosion of iron-chromium alloys

  • S. Mrowec
  • T. Walec
  • T. Werber
Article

Abstract

The kinetics and the mechanism of sulfurization of Fe-Cr alloys containing from 0.35 to 74 at. % Cr were studied in the temperature range 700–1000°C. The sulfurization was conducted in sulfur vapor at atmospheric pressure. The reaction rate was determined by the continuous gravimetric method. The scale composition was studied by X-ray and electron microprobe methods. The contribution of the reactants to the process of material transport through the scale was examined with both the marker method and the autoradiographic method using the radioactive isotope35S. It has been found that, irrespective of alloy composition and temperature, the sulfurization follows a parabolic rate law. On the dilute alloys (up to about 2 at. % Cr) the scales formed are monophase consisting of Fe1−xS only. In the range 2–40 at. % Cr the scale is a heterophase mixture of Fe1−xS and the mixed spinel FeFe2−xCrxS4. On the chromium-rich alloys the scale is monophase and is built of a solid solution of FeS in Cr2S3. The scale growth on the alloys under examination proceeds without the participation of the inward diffusion of sulfur. The mechanism of the scale formation has been proposed.

Keywords

FeFe2 Material Transport Scale Growth Sulfur Vapor Cr2S3 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    K. Hauffe,Oxydation von Metallen und Metallegierungen (Springer-Verlag, Berlin, 1956).Google Scholar
  2. 2.
    R. Meussner and C. Birchenall,Corrosion 13, 677 (1957).Google Scholar
  3. 3.
    B. Lichter and C. Wagner,J. Electrochem. Soc. 107, 168 (1960).Google Scholar
  4. 4.
    K. Hauffe and A. Rahmel,Z. Physik. Chem. (Leipzig) 199, 152 (1952).Google Scholar
  5. 5.
    S. Mrowec, T. Werber, and M. Zastawnik,Corrosion Sci. 6, 47 (1966).Google Scholar
  6. 6.
    A. Brückman,Corrosion Sci. 7, 51 (1967).Google Scholar
  7. 7.
    J. Romanski,Corrosion Sci. 8, 56 (1968).Google Scholar
  8. 8.
    H. Rickert,Z. Physik. Chem. (Frankfurt) 23, 355 (1960).Google Scholar
  9. 9.
    S. Mrowec and T. Werber,Fiz. Metal, i Metalloved. 10, 572 (1960).Google Scholar
  10. 10.
    A. Brückman, S. Mrowec, and T. Werber,Fiz. Metal, i Metalloved. 15, 362 (1963).Google Scholar
  11. 11.
    S. Mrowec and M. Zastawnik,J. Phys. Chem. Solids 27, 1027 (1966).Google Scholar
  12. 12.
    S. Mrowec and T. Werber,Corrosion Sci. 5, 717 (1965).Google Scholar
  13. 13.
    W. Savelsberg,Z. Elektrochem. 46, 379 (1940).Google Scholar
  14. 14.
    T. Rosenqvist,J. Iron Steel Inst. (London) 176, 37 (1954).Google Scholar
  15. 15.
    S. Mrowec,Corrosion Sci. 7, 563 (1967).Google Scholar
  16. 16.
    A. Brückman and J. Wolter,Arch. Hutnictwa 10, 103 (1965).Google Scholar
  17. 17.
    A. Brückman and J. Romanski,Corrosion Sci. 5, 185 (1965).Google Scholar
  18. 18.
    S. Mrowec, S. Tochowicz, T. Werber, and J. Podhorodecki,Corrosion Sci. 7, 697 (1967).Google Scholar
  19. 19.
    S. Mrowec, J. Podhorodecki, and T. Werber,Corrosion Sci. 8, 815 (1968).Google Scholar
  20. 20.
    A. Siemionowa and P. Geld,Zh. Fiz. Khim. 32, 1087 (1958).Google Scholar
  21. 21.
    A. Krasowska and P. Geld,Fiz. Metal, i Metalloved. 7, 626 (1959).Google Scholar
  22. 22.
    F. Jellinek,Acta Cryst. 10, 620 (1957).Google Scholar
  23. 23.
    G. Wood, T. Hodgkiess, and D. Whittle,Corrosion Sci. 6, 129 (1966).Google Scholar
  24. 24.
    J. Bénard,L'oxydation des metaux (Paris, 1964).Google Scholar
  25. 25.
    C. Wagner,J. Electrochem. Soc. 103, 627 (1956).Google Scholar

Copyright information

© Plenum Publishing Corporation 1969

Authors and Affiliations

  • S. Mrowec
    • 1
  • T. Walec
    • 1
  • T. Werber
    • 1
  1. 1.Institute of Solid State ChemistrySchool of Mining and MetallurgyCracowPoland

Personalised recommendations