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Interfaces in Ceramic Matrix Composites Following High Temperature Deformation

  • Håkan A. Swan
  • Colette O’Meara
  • Gordon L. Dunlop
Chapter

Abstract

The role of whisker interfaces during high temperature deformation of ceramic matrix composites has been studied. The effect of the whiskers depends on the actual CMC system used and in particular on the presence or absence of an intergranular amorphous phase. SiCw/Si3N4 and SiCw/Al2O3 have been creep tested at elevated temperatures and reasons for the difference in creep behaviour of the two composites are discussed. It is concluded that the effect of the whiskers upon the high temperature properties of the CMC material is strongly dependent upon the microstructure and properties of the matrix.

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References

  1. 1.
    Campbell, G.H., Rühle, M., Dalgleish, B.I. and Evans, A.G., Whisker toughening: A comparison between Al2O3 and Si3N4 toughened with SiC. J. Am. Cer. Soc., 1989, 73, pp. 521–530.CrossRefGoogle Scholar
  2. 2.
    Lin, F., Marieb, T., Morrone, A. and Nutt, S., Thermal Oxidation of Al2O3-SiC Whisker Composites: Mechanisms and Kinetics. In High TemperaturelHigh Performance Ceramics, ed. F.D. Lemkey, S.F. Fishman, A.G. Evans and J.R. Strife, Materials Research Society, Pittsburgh, Pa, 1988, 120, pp. 323–332.Google Scholar
  3. 3.
    Cannon, R.M., Rhodes, W.H. and Heuer, A.H., Plastic Deformation of Fine-Grained Alumina (AI20 3): I, Interlace-Controlled Diffusional Creep. J. Am. Ceram. Soc., 1980, 63, pp. 46–53.CrossRefGoogle Scholar
  4. 4.
    Chokshi, A.H. and Porter, J.R., Creep Defonnation of an Alumina Matrix Composite Reinforced with Silicon Carbide Whiskers. J. Am. Ceram. Soc., 1985, 68, pp. C144–C14S.CrossRefGoogle Scholar
  5. 5.
    Lipetzky, P., Nutt, S.R. and Becher, P.F., Creep Behavior of an Al2O3 — SiC Composite. In High Temperature/High Performance Ceramics, ed. F.D. Lemkey, S.F. Fishman, A.G. Evans and J.R. Strife, Materials Research Society, Pittsburgh, 1988, 120, pp. 271–277.Google Scholar
  6. 6.
    Arellano-López, A.R., Cumbrera, F.L., Dominguez-Rodriguez, A., Goretta, K.C. and Routbort, J.L., Compressive Creep of SiC-Whisker-Reinforced Al2O3. J. Am. Ceram. Soc. 1990, 73, pp. 1297–1300.CrossRefGoogle Scholar
  7. 7.
    Swan, A.H., Swain, M.V. and Dunlop, G.L., Compressive Creep of SiC Whisker Reinforced Alumina. To be published.Google Scholar
  8. 8.
    Paladino, A.E. and Kingery, W.D., Aluminium Ion Diffusion in Aluminium Oxide. J. Chem. Phys., 1962, 37, pp. 957–962.CrossRefGoogle Scholar
  9. 9.
    Cannon, R.M. and Coble, R.L., In Deformation of Ceramic Materials, ed. R.C. Bradt and R.E. Tressler, Plenum, New York, 1975, pp. 61–100.CrossRefGoogle Scholar
  10. 10.
    Clarke, D.R., The Microstructure of Nitrogen Ceramics. In Progress in Nitrogen Ceramics, ed. F.L. Riley, Martinus Nijhoff, The Hague, 1983, pp. 341–358.CrossRefGoogle Scholar
  11. 11.
    Becher, P.F., Hsueh, C.H., Angelini, P. and Tiegs, T.N., Toughening Behaviour in Whisker-Reinforced Ceramic Matrix Composites. J. Am. Ceram. Soc., 1988, 71, pp. 1050–1061.CrossRefGoogle Scholar
  12. 12.
    Porter, J.R., Lange, F.F. and Chokshi, A.H., Processing and Creep Performance of Silicon Carbide Whisker-Reinforced Silicon Nitride. In Mat. Res. Soc. Symp. Proc., Materials Research Society, 1987, 78, pp. 289–294.CrossRefGoogle Scholar
  13. 13.
    Backhaus-Ricoult, M., Castaing, J. and Routbort, J.L., Creep of SiC-Whisker Reinforced Si3N4. Revue Phys. Appl., 1988, 23, pp. 239–249.CrossRefGoogle Scholar
  14. 14.
    Swan, A.H., Olsson, E., Linde, K.M. and Lundberg, R., The influence of Microstructure on the Mechanical Properties of SiC Whisker Reinforced Si3N4. In New Materials and Processes, ed. I.L.H. Hansson and H. Lilholt, Danish Society for Materials Testing and Research, Copenhagen, 1989, pp. 655–662.Google Scholar
  15. 15.
    Swan, A.H. and O’Meara, C., Creep Properties and Interlacial Microstructure of SiC Whisker Reinforced Si3N4. In Interlaces in Composites, ed. C.G Pantano and E.J.H. Chen, Materials Research Society, Pittsburgh, PA, 1990, 170, pp. 223–228.Google Scholar
  16. 16.
    Fett, T., Keller, K. and Munz, D., An Analysis of the Creep of Hot Pressed Silicon Nitride in Bending. J. Mater. Sci., 1988, 23, pp. 467–474.CrossRefGoogle Scholar
  17. 17.
    Porter, J.R., Dispersion Processing of Creep Resistant Whisker-Reinforced Ceramic Matrix Composites. Mater. Sci. Eng., 1989, A107, pp. 127–132.CrossRefGoogle Scholar

Copyright information

© Elsevier Science Publishers Ltd and MPA Stuttgart 1992

Authors and Affiliations

  • Håkan A. Swan
    • 1
  • Colette O’Meara
    • 1
  • Gordon L. Dunlop
    • 2
  1. 1.Department of PhysicsChalmers University of TechnologyGöteborgSweden
  2. 2.Department of Mining & Metallurgical EngineeringUniversity of QueenslandSt. LuciaAustrallia

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