Abstract
The corrosion behavior of structural alloys in complex multicomponent gas environments is of considerable interest for their effective utilization in coal conversion schemes. Little understanding of the degradation mechanisms of advanced high-temperature alloys in conditions typical of low-Btu coal gasifiers presently exists. Analysis of scale and subscale characteristics of several alloy types after exposure to the aggressive simulated low-Btu gasifier environments yielded a reaction model for these sulfidation-oxidation conditions. Initial competition between reactive metal oxide and base metal sulfide nuclei is followed by base metal sulfide overgrowth, chromium sulfide formation at the scale-metal interface, dissociation near voids in the subscale, and internal chromium sulfide precipitation. Additions of aluminum, titanium, and an oxide dispersion improve the sulfidation resistance by increasing the number of oxide nucleation sites and their growth kinetics on the surface in the crucial competition stage. Thermogravimetric tests carried out in three mechanistic regimes agreed with these hypotheses.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
T. C. Tiearney, Jr. and K. Natesan,J. Mater. Energy Syst. 1(4) 13–29 (March 1980).
K. Natesan, “Corrosion and Mechanical Behavior of Materials for Coal Gasification Applications,” Argonne National Laboratory Report ANL-80-5 (May 1980).
“Materials for Coal Conversion and Utilization,” 3rd Annual Conference Proceedings, October 10–12, 1978, Gaithersburg, Md.
“Materials for Coal Conversion and Utilization,” 4th Annual Conference Proceedings, Oct. 9–11, 1979, Gaithersburg, Md.
“Materials for Coal Conversion and Utilization,” 5th Annual Conference Proceedings, October 7–9, 1980, Gaithersburg, Md.
K. Natesan, “High-Temperature Corrosion,” in Proceedings of the Conference on Prevention of Failures in Coal Conversion Systems, NBS Special Publication 468, Battelle Columbus Laboratories, Columbus, Ohio (1976), p. 159.
O. K. Chopra and K. Natesan,High Temp. Sci.,9, 243–62 (1977).
I. Barlin and O. Knacke,Thermochemical Properties of Inorganic Substances (Springer-Verlag, Berlin, 1973).
P. L. Hemmings and R. A. Perkins, EPRI Report FP-539, Research Project 716–1 (December 1977).
V. A. Bruckman and S. Mrowec,Werkst. Korros. 25(7) 502–13 (July 1973).
B. A. Gordon, W. Worrell, and V. Nagarajan,Oxid. Met. 13(1) 13–24 (February 1979).
C. S. Giggins and F. S. Pettit,Oxid. Met. 14(5) 363–413 (October 1980).
K. T. Jacob, D. B. Rao, and H. G. Nelson,Oxid. Met. 13(1) 25–56 (February 1979).
K. Natesan and M. B. Delaplane, Proceedings of the Symposium on the Corrosion-Erosion Behavior of Materials, TMS-AIME Fall Meeting, St. Louis, Mo., Oct. 16–18, 1979.
W. W. Smeltzer, “The Sulfidation Properties of Nickel Alloys,” inProceedings of the Conference on Corrosion/Erosion of Coal Conversion System Materials, A. V. Levy, ed., (NACE, Berkeley, 1979).
G. Romeo, W. W. Smeltzer, and J. S. Kirkaldy,J. Electrochem. Soc. 118(5) 740–46 (May 1971).
G. Romeo, W. W. Smeltzer, and J. S. Kirkaldy,J. Electrochem. Soc. 118(8) 1336–1340 (August 1971).
G. Romeo and W. W. Smeltzer,J. Electrochem. Soc. 119(9) 1267–1269 (September 1972).
R. Viswanathan and C. J. Spengler,Corrosion,26(1) 29–41 (January 1970).
S. Mrowec, T. Werber, and M. Zastawnik,Corrosion Sci. 6, 47 (1966).
P. Hancock,First International Conference on Metallic Corrosion (London, 1961) Butterworth, London, 1962), p. 193.
A. Davin and D. Coutsouradis,Cobalt, No. 17, 23 (1962).
K. N. Strafford, J. Stringer, and S. K. Verma,Cobalt,51, 91–98 (June 1971).
S. K. Verma, D. P. Whittle, and J. Stringer,Corrosion Sci. 12(7) 545–54 (July 1972).
J. Stringer, M. E. El-Dahshan, and I. G. Wright,Oxid. Met. 8(6), 361–77 (December 1974).
S. Mrowec and M. Wedrychowska,Oxid. Met. 13(6), 481–504 (December 1979).
A. Rahmel,Oxid. Met. 9(5) 401–408 (October 1975).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Tiearney, T.C., Natesan, K. Sulfidation-oxidation of advanced metallic materials in simulated low-Btu coal-gasifier environments. Oxid Met 17, 1–26 (1982). https://doi.org/10.1007/BF00606190
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00606190