Journal of Materials Science

, Volume 31, Issue 22, pp 6055–6062 | Cite as

Sintering, microstructure and mechanical properties of commercial Y-TZPs

  • R. Singh
  • C. Gill
  • S. Lawson
  • G. P. Dransfield
Article
Received:
Accepted:

Abstract

The sintering behaviour of Y-TZP ceramics, their resulting microstructures and properties are influenced not only by the characteristics of the raw materials but also were found to be dependent on the thermal history during the fabrication process. It is generally understood that fracture toughness increases as grain size increases up to a certain limit but in the present investigation, the results obtained challenge this view. The work is concerned with grain size dependence on the mechanical properties, in particular on the fracture toughness. Two commercially available powders based on two different processing techniques (i.e. coated and co-precipitated) were studied. It has been found that both materials exhibited different fracture toughness trends. Smaller grains of coated Y-TZP resulted in high fracture toughness >12 MPa m1/2 while the opposite effect was seen in the co-precipitated material which showed enhanced fracture toughness with increasing grain size above a certain lower limit from a nonconventional heat treatment.

Keywords

Grain Size Microstructure Mechanical Property Heat Treatment Fracture Toughness 
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.
This is a preview of subscription content, log in to check access.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    B. Cales andY. Stefani,J. Mater. Sci.: Mater. Med. 5 (1994) 376.Google Scholar
  2. 2.
    T. G. Nieh andJ. Wadsworth,Acta Metall. Mater. 38 (1990) 1121.Google Scholar
  3. 3.
    F. Wakai, S. Sakaguchi andY. Matsuno,Adv. Ceram. Mater. 1 (1986) 259.Google Scholar
  4. 4.
    H. Schubert, in “Ceramic Transactions”, Vol. 12, Ceramic Powder Science III, edited by G. L. Messing (The American Ceramic Society, Columbus, Ohio, 1990) p. 813.Google Scholar
  5. 5.
    F. F. Lange,J. Amer. Ceram. Soc. 67 (1984) 83.Google Scholar
  6. 6.
    H. Schubert, P. Greil andG. Petzow, in Proceedings of the Advanced Materials Technology Workshop II, Tokyo, 1988, p. 182.Google Scholar
  7. 7.
    W. H. Rhodes,J. Amer. Ceram. Soc. 64 (1981) 19.Google Scholar
  8. 8.
    G. Gongyi andC. Yuli,ibid. 75 (1992) 1294.Google Scholar
  9. 9.
    F. F. Lange,J. Mater. Sci. 17 (1982) 240.Google Scholar
  10. 10.
    T. K. Gupta,Sci. Sintering 10 (1978) 205.Google Scholar
  11. 11.
    T. G. Nieh andJ. Wadsworth,J. Ceram. Trans. 19 (1991) 707.Google Scholar
  12. 12.
    K. Tsukuma andT. Takahata, in Materials Research Society Symposium Proceedings, Vol. 78, Advanced Structural Ceramics, edited by P. F. Becher, M. V. Swain and S. Somiya (Materials Research Society, Pittsburgh, Pennsylvania, 1987) p. 123.Google Scholar
  13. 13.
    P. Duran, P. Recio, J. R. Jurado, C. Pascual, F. Capel andC. Moure,J. Mater. Sci. 24 (1989) 708.Google Scholar
  14. 14.
    S. Lawson,PhD thesis, University of Sunderland, UK (1993).Google Scholar
  15. 15.
    T. Sato, S. Ohtaki, T. Endo andM. Shimada,Int. J. High. Tech. Ceram. 2 (1986) 167.Google Scholar
  16. 16.
    H.-Y. Lu andS.-Y. Chen,J. Amer. Ceram. Soc. 70 (1987) 537.Google Scholar
  17. 17.
    T. Sato, S. Ohtaki andM. Shimada,J. Mater. Sci. 20 (1985) 1466.Google Scholar
  18. 18.
    K. Kobayashi, H. Kuwajima andT. Masaki,Solid State Ionics 3/4 (1981) 489.Google Scholar
  19. 19.
    S. Lawson,J. Eur. Ceram. Soc. 15 (1995) 485.Google Scholar
  20. 20.
    G. P. Dransfield, K. A. Forthergill andT. A. Egerton, in “Euro-Ceramics”, Vol. 1 edited by G. de With, R. A. Terpstra and R. Metselaar (Elsevier Applied Science, London, 1989) p. 275.Google Scholar
  21. 21.
    O. N. Grigoryev, S. A. Firstov, O. A. Babiy, N. A. Orlovskaya andG. E. Homenko,J. Mater. Sci. 29 (1994) 4633.Google Scholar
  22. 22.
    S. Lawson, C. Gill, J. M. Smith, G. P. Dransfield, T. A. Egerton, P. McColgan, in “Third Euro-Ceramics, Engineering Ceramics” Vol. 3, edited by P. Durán and J. F. Fernández, (Faenza Editrice Iberica, S. L., Spain, 1993) p. 507.Google Scholar
  23. 23.
    W. E. Tefft,J. Res. Nat. Bur. Stand. 64B (1960) 237.Google Scholar
  24. 24.
    H. Toraya, M. Yoshimura andS. Somiya,J. Amer. Ceram. Soc. 67 (1984) C-119.Google Scholar
  25. 25.
    K. Niihara, R. Morena andD. P. H. Hasselman,J. Mater. Sci. Lett. 1 (1982) 13.Google Scholar
  26. 26.
    M. I. Mendelson,J. Amer. Ceram. Soc. 52 (1969) 443.Google Scholar
  27. 27.
    S. Lawson, G. P. Dransfield, A. G. Jones, P. McColgan andW. M. Rainforth, in 8th CIMTEC World Ceramics Congress, Florence, Italy, 1994.Google Scholar
  28. 28.
    H. G. Scott,J. Mater. Sci. 10 (1975) 1527.Google Scholar
  29. 29.
    K. S. Tan, S. Lawson, J. M. Smith, C. Gill andG. P. Dransfield, in Sintering '95, Pennsylvania, USA, September 1995, Marcel Dekker Inc., New York, (1996).Google Scholar
  30. 30.
    K. Haberko andR. Pampuch,Ceram. Int. 9 (1983) 8.Google Scholar
  31. 31.
    J. Wang, M. Rainforth andR. Stevens,Br. Ceram. Trans. J 88 (1989) 1.Google Scholar
  32. 32.
    M. V. Swain,J. Mater. Sci. Lett. 5 (1986) 1159.Google Scholar
  33. 33.
    G. P. Dransfield, in “Engineering Ceramics, British Ceramics, Proceedings”, No. 50, edited by D. P. Thompson (The Institute of Materials, London, 1993) p. 1.Google Scholar

Copyright information

© Chapman & Hall 1996

Authors and Affiliations

  • R. Singh
    • 1
  • C. Gill
    • 1
  • S. Lawson
    • 2
  • G. P. Dransfield
    • 3
  1. 1.School of Engineering and Advanced TechnologyUniversity of SunderlandSunderlandUK
  2. 2.BNFLSeascaleUK
  3. 3.Tioxide Specialties Ltd.BillinghamUK

Personalised recommendations