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Journal of Materials Science

, Volume 29, Issue 22, pp 5868–5874 | Cite as

Improvement of mechanical properties of zirconia-toughened alumina by sinter forging

  • Y. J. He
  • A. J. A. Winnubst
  • H. Verweij
  • A. J. Burggraaf
Article

Abstract

ZTA powder with a composition of 85 wt% alumina/15 wt% zirconia was prepared by a gel precipitation method. Sinter forging was performed with this powder to enhance the mechanical properties of ZTA materials. The influence of processing flaws on mechanical properties of sinter forged materials and pressureless sintered materials was investigated. Sinter forging at 40 MPa effectively decreases process flaw sizes resulting in a homogeneous microstructure and improves the grain boundary structure because of large shear applied in this process. Sinter forging resulted in an increase in strength and toughness by a factor of 1.5–2 when compared with pressureless sintered compacts. The fracture energy is enhanced by a factor of two. The predominate mechanism for improvement of mechanical properties of these sinter-forged ZTA materials is grain boundary strengthening.

Keywords

Polymer Precipitation Alumina Microstructure Mechanical Property 
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.

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References

  1. 1.
    N. Claussen, J. Am. Ceram. Soc. 61 (1978) 85.CrossRefGoogle Scholar
  2. 2.
    F. F. Lange, J. Mater. Sci. 17 (1982) 247.CrossRefGoogle Scholar
  3. 3.
    S. R. Witek and E. P. Butler, J. Am. Ceram. Soc. 69 (1986) 523.CrossRefGoogle Scholar
  4. 4.
    M. Rühle, N. Claussen and A. H. Heuer, 69 (1986) 195.CrossRefGoogle Scholar
  5. 5.
    F. F. Lange, 66 (1983) 396.CrossRefGoogle Scholar
  6. 6.
    A. G. Evans, 65 (1982) 127.CrossRefGoogle Scholar
  7. 7.
    J. Wang, M. Rainforth and R. Stevens, Trans. Br. Ceram. Soc. 88 (1989) 1.Google Scholar
  8. 8.
    A. Krell and P. Blank, J. Eur. Ceram. Soc. 9 (1992) 309.CrossRefGoogle Scholar
  9. 9.
    A. Krell, P. Blank and T. Weiss, J. Mater. Sci. 16 (1981) 3304.Google Scholar
  10. 10.
    A. J. A. Winnubst, W. F. M. Groot Zevert, G. S. A. M. Theunissen and A. J. Burggraaf, Mater. Sci. Eng. A109 (1989) 215.CrossRefGoogle Scholar
  11. 11.
    K. R. Venkatachari and R. Raj, J. Am. Ceram. Soc. 70 (1987) 514.CrossRefGoogle Scholar
  12. 12.
    F. F. Lange and M. Metcalf, 66 (1983) 398.CrossRefGoogle Scholar
  13. 13.
    A. G. Evans, 65 (1982) 497.CrossRefGoogle Scholar
  14. 14.
    K. R. Venkatachar and R. Raj, 69 (1986) 499.CrossRefGoogle Scholar
  15. 15.
    M. M. R. Boutz, A. J. A. Winnubst and A. J. Burggraaf, 69, accepted (1994) 499.Google Scholar
  16. 16.
    Y. J. He, A. J. A. Winnubst, H. Verwiej and A. J. Burggraaf, J. Mater. Sci. accepted (1994).Google Scholar
  17. 17.
    P. Den Exter, A. J. A. Winnubst, T. H. P. Leuwerink and A. J. Burggraaf, J. Am. Ceram. Soc. accepted (1994).Google Scholar
  18. 18.
    P. Den Exter, PhD thesis, University of Twente, The Netherlands (1991).Google Scholar
  19. 19.
    R. Raj, J. Am. Ceram. Soc. 65 (1982) C46.CrossRefGoogle Scholar
  20. 20.
    H. Toraya, M. Yoshimura and S. Somiya, 67 (1984) C119.Google Scholar
  21. 21.
    J. C. Wurst and J. A. Nelson, 55 (1972) 109.CrossRefGoogle Scholar
  22. 22.
    A. G. Evans, in “Advances in Ceramics”, Vol. 12, “Science and Technology of Zirconia II”, edited by N. Claussen, M. Rühle and A. H. Heuer (American Ceramic Society, Columbus, OH, 1984) pp. 193–212.Google Scholar
  23. 23.
    J. G. P. Binner, R. S. Tovens and S. R. Tan, pp. 428–34.Google Scholar
  24. 24.
    Saburo Hori, J. Am. Ceram. Soc. 69 (1986) 169.CrossRefGoogle Scholar
  25. 25.
    R. W. Davidge, ‘Mechanical Behaviour of Ceramics” (Cambridge University Press, Cambridge, UK, 1979).Google Scholar
  26. 26.
    P. F. Becher, J. Am. Ceram. Soc. 64 (1981) 37.CrossRefGoogle Scholar
  27. 27.
    L. A. Simpson, 56 (1973) 7.CrossRefGoogle Scholar

Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • Y. J. He
    • 1
  • A. J. A. Winnubst
    • 1
  • H. Verweij
    • 1
  • A. J. Burggraaf
    • 1
  1. 1.Faculty of Chemical Technology, Laboratory for Inorganic Chemistry, Materials Science and CatalysisUniversity of TwenteEnschedeThe Netherlands

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