Journal of Materials for Energy Systems

, Volume 2, Issue 3, pp 49–57 | Cite as

The simulating of hot corrosion behaviour of gas turbine materials by laboratory tests

  • M. E. El-Dahshan


Several tests were carried out, using various model and commercial alloys in order to simulate the hot corrosion behavior of gas turbine superalloys in their practical uses. These tests included: salt free oxidation, straight sulphidation in H2-H2S, crucible tests and salt coating. In addition, two new tests were performed: a modified Dean apparatus, and gas-phase mixing. The products of salt free oxidation and straight sulphidation tests did not produce, in any way, the results observed in practical situations, they only confirmed maintaining a certain level of chromium and/or aluminum in order to produce a corrosion resistant alloy. The crucible and salt coating tests were not capable of ranking the alloys in the same order as they appear in practice. The new tests seem ideal, and the reaction morphologies of the tested commercial alloys were, to a great extent, similar to those seen in practice. The last two tests helped in explaining the corrosion mechanism as a two-stage process, with an incubation period followed by initiation of reaction, after which the corrosion propagates rapidly.


Commercial Alloy Salt Coating Energy System Volume Corrosion Resistant Alloy Sulphide Solid Solution 


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  1. 1.
    H. T. Quigg and R. M. Schirmen Final Summary Report for Naval Air Systems Command on Contract N00019-67-C-0275 (May 1968).Google Scholar
  2. 2.
    S. Y. Lee and W. E. Young: inCranfield Symposium No. 11: Combustion and Heat Transfer in Gas Turbine Systems p. 253, E. R. Norster, ed. Pergamon Press, Oxford, 1971.Google Scholar
  3. 3.
    J. F. G. Condé and G. C. Booth, inDeposition and Corrosion in Gas Turbines, A. B. Hart and A. J. B. Cutler, p. 278, Applied Science Publisher, London, 1973.Google Scholar
  4. 4.
    D. A. Spera and S. J. Grisaffe:Gas Turbine Materials Conference Proceedings Naval Ship Engineering Center, Washington, D. C., October 1972, p. 97.Google Scholar
  5. 5.
    M. E. El-Dahshan, J. Stringer, and D. P. Whittle:Cobalt, 1974, vol. 4, p. 86.Google Scholar
  6. 6.
    M. E. El-Dahshan, D. P. Whittle, and J. Stringer,Cobalt, 1973, vol. 2, p. 45.Google Scholar
  7. 7.
    J. Stringer and M. E. El-Dahshan:Proc. Conf. on Gas Turbine Materials in the Marine Environment, J. W. Fairbanks and I. Machine, eds., Metals and Ceramics Information Center Report MCIC-75-27 1974, p. 161.Google Scholar
  8. 8.
    A. V. Dean:Investigation into the Resistance of Various Nickel and Cobalt-Base Alloys to Sea Salt Corrosion at Elevated “Temperatures”, NGTE Report, Jan. 1964.Google Scholar
  9. 9.
    M. E. El-Dahshan:The Effect of Molten Salt Chemistry on the Hot Corrosion of Nickel-Base Alloys, 3rd Iranian Chemical Engineering Conference, Shiraz, Nov. 1977.Google Scholar
  10. 10.
    M. A. DeCrescente and N. S. Bornstein:Corros. 1968, vol. 24, p. 127.Google Scholar
  11. 11.
    R. E. Fragcell, C. A. Trythall and R. J. Perkins:Corros., 1973, vol. 29, p. 423.Google Scholar
  12. 12.
    L. D. Graham, J. D. Jadd, and R. J. Quigg: inHot Corrosion Problems Associated with Gas Turbines, ASTM Special Technical Publication No. 421. Philadelphia, June 1966, Publs. 1967, p. 105.Google Scholar
  13. 13.
    M. E. El-Dahshan:Energy in the 80’s, The Institute of Chemical Engineering, I. Chem. Symposium Series No. 48, April 1977.Google Scholar
  14. 14.
    P. C. Felix and P. Huber: COST-50 (CHI/1) Final Report, August 1977.Google Scholar
  15. 15.
    F. Schmitz, K. Schleithoff, and U. Schieferstein: COST-50 (D 1/6) Final Report, Sept. 1976.Google Scholar

Copyright information

© American Society for Metals 1980

Authors and Affiliations

  • M. E. El-Dahshan
    • 1
  1. 1.Department of Chemical Engineering, College of EngineeringUniversity of RiyadRiyadSaudi Arabia

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