Hot Corrosion of Alumina Matrix-Composites

  • Jeffrey J. Swab
  • Gary L. Leatherman
  • Mary H. Adair


The effects of sodium sulfate-induced hot corrosion on the room temperature strength of an alumina and three alumina-matrix composites were examined in this study. The strength of the alumina was unaffected by the corrosion. On the other hand, the strength of the composites decreased, to various degrees, with exposure to sodium sulfate.


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  1. 1.
    Gannon, R.E., Hals, F.A. and Reynolds, H.H., Corrosion Studies in Materials for Auxiliary Equipment in MHD Power Plants, in Corrosion Problems in Energy Conversion and Generation, C.J. Tedman, Jr. ed., Corrosion Division, The Electrochemical Society, Princeton, NJ, 1974, pp. 212–224.Google Scholar
  2. 2.
    Larsen, D.C. and Adams. J.W., Long-Term Stability and Properties of Zirconia Ceramics for Heavy Duty Diesel Engine Components, prepared for NASA-Lewis Research Center, for U.S. Department of Energy under Contract DEN 3-305, NASA CR-174943, September 1985.Google Scholar
  3. 3.
    Ferber, M.K. and Hine. T., Time-Dependent Mechanical Behavior of Partially Stabilized Zirconia for Diesel Engine Applications, ORNL/Sub/85-27416\1, prepared for Oak Ridge National Laboratory for U.S. Department of Energy under Interagency Agreement DE-AC05-840R21400, July 1988.Google Scholar
  4. 4.
    Claussen, N., Fracture Toughness of Al 203 with an Unstabilized ZrO2 Dispersed Phase, J. Am. Ceram. Soc., 1976, 59 [1–2], pp. 49–51.CrossRefGoogle Scholar
  5. 5.
    Claussen, N., Steeb, J. and Pabst, R., Effect of Induced Microcracking on the Fracture Toughness of Ceramics, J. Am. Ceram. Soc., 1977, 56 [6] pp. 559–562.Google Scholar
  6. 6.
    Kibbel, B. and Heuer, A.H., Exaggerated Grain Growth in ZrO2-Toughened Al 2O3, J. Am. Ceram. Soc., 1986, 69 [3] pp. 231–236.CrossRefGoogle Scholar
  7. 7.
    Tiegs, T.N. and Becher, P.F., Alumina-SiC Whisker Composites, Proceedings of the 23rd Automotive Technology Development Contractors’ Coordination Meeting, Vol P-165, Society of Automotive Engineers, Inc., Warrendale, PA, 1984, pp. 209–213.Google Scholar
  8. 8.
    Tressler, R.E., Meiser, M.D. and Yonushonis, T., Molten Salt Corrosion of SiC and Si3N4 Ceramics, J. Am. Ceram. Soc., 1976, 59 [5–6], pp. 278–79.CrossRefGoogle Scholar
  9. 9.
    Jacobson, N.S. and Smialek, J.L., Hot Corrosion of Sintered α-SiC at 1000ΰC, J. Am. Ceram. Soc., 1985, 68 [8], pp. 432–439.CrossRefGoogle Scholar
  10. 10.
    Jacobson, N.S., Kinetics and Mechanism of Corrosion of SiC by Molten Salts, J. Am. Ceram. Soc., 1986, 69 [1], pp. 74–82.CrossRefGoogle Scholar
  11. 11.
    Jacobson, N.S., Stearns, C.A. and Smialek, J.L., Burner Rig Corrosion of SiC at 1000ΰC, Ad. Ceram. Mat., 1986, 1 [2], pp. 154-161.Google Scholar
  12. 12.
    Jacobson, N.S. and Smialek, J.L., Corrosion Pitting of SiC by Molten Salts, J. Electrochem. Soc., 1986, 133 [12], pp. 2615–2621.CrossRefGoogle Scholar
  13. 13.
    Swab, J.J., Properties of Yttria-Tetragonal Zirconia Polycrystal (YTZP) Materials After Long-Term Exposure to Elevated Temperatures, prepared for the U.S. Department of Energy under Interagency Agreement DE-AI05-840R21411, MTL TR 89-21, March 1989.Google Scholar
  14. 14.
    Barkalow, R. and Pettit, F., Mechanisms of Hot Corrosion Attack of Ceramic Coating Materials, Proceedings of the 1st Conference on Advanced Materials for Alternative Fuel Capable Directly Fired Heat Engines, CONF-790749, J.W. Fairbanks and J. Stinger, ed., NTIS Springfield, VA, 1979, pp. 704–710.Google Scholar
  15. 15.
    Jones, R.L., Nordman, D.B. and Gadomski, S.T., Sulfation of Y203 and HfO2 in Relation to MCrAl Coatings, Metall. Trans., 1985, 16A [z], pp. 303–306.CrossRefGoogle Scholar
  16. 16.
    Jones, R.L., Jones, S.R. and Williams, C.E., Sulfation of CeO2 and ZrO2 Relating to Hot Corrosion, J. Electrochem. Soc., 1985, I32 [6], pp. 1498–1501.CrossRefGoogle Scholar
  17. 17.
    Swab, J.J. and Leatherman, G.L., “Strength of Structural Ceramics After Hot Corrosion,” J. Eur. Ceram. Soc., 1989, 5 [6], pp. 333–40.CrossRefGoogle Scholar

Copyright information

© Elsevier Science Publishers Ltd and MPA Stuttgart 1992

Authors and Affiliations

  • Jeffrey J. Swab
    • 1
  • Gary L. Leatherman
    • 2
  • Mary H. Adair
    • 2
  1. 1.US Army Materials Technology LaboratoryWatertownUSA
  2. 2.Worcester Polytechnic InstituteWorcesterUSA

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