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Journal of Materials Science

, Volume 43, Issue 12, pp 4099–4106 | Cite as

The effect of porosity in thermal shock

  • Chen Yuan
  • Luc J. Vandeperre
  • Robert J. Stearn
  • William J. CleggEmail author
Rees Rawlings Festschrift

Abstract

The effects of porosity on cracking during thermal shock have been studied by directly observing the cracks that formed after quenching heated porous alumina bars into water. The porosity was introduced by adding different volume fractions of fugitive inclusions and the behaviour compared with that obtained by partial sintering of a powder compact. Where fugitive inclusions had been used, there was little effect of either pore size or pore volume fraction over the ranges studied. The extent of cracking was always slightly less than that of a monolithic, dense alumina and gave reasonable agreement with predictions using experimentally measured data. However, cracks grew much further in the partially sintered material. This discrepancy became greater as the temperature change increased, inconsistent with existing analyses. It is suggested that this difference in behaviour arises predominantly because of the greater measured fracture energy of the alumina made using fugitive inclusions compared with that made by partial sintering.

Keywords

Fracture Energy Thermal Shock Young Modulus Potato Starch Thermal Shock Testing 

Notes

Acknowledgements

E. Carlström (I.V.F., Sweden) and A. Kristoffersson (Fiat, Sweden) for many helpful discussions.

References

  1. 1.
    Orenstein RM, Green DJ (1992) J Am Ceram Soc 75:1895CrossRefGoogle Scholar
  2. 2.
    Coble RL, Kingery WD (1955) J Am Ceram Soc 38:33CrossRefGoogle Scholar
  3. 3.
    Arato T, Nakamura K, Sobue M (1987) J Ceram Soc Jpn (Intl Edn) 97:790Google Scholar
  4. 4.
    Gilman JJ (1959) Fracture. Technical Press of MIT, Boston, p 193Google Scholar
  5. 5.
    Rice RW (1996) J Mater Sci 31:1969CrossRefGoogle Scholar
  6. 6.
    Rice RW (1996) J Mater Sci 31:4503CrossRefGoogle Scholar
  7. 7.
    Smith RD, Anderson HA, Moore RE (1976) Am Ceram Soc Bull 55:979Google Scholar
  8. 8.
    Koumoto K, Shimuzu H, Seo WS, Pai CH, Yanaqgida H (1991) Trans J Brit Ceram Soc 90:32Google Scholar
  9. 9.
    Hasselman DPH (1969) J Am Ceram Soc 52:600CrossRefGoogle Scholar
  10. 10.
    Evans AG, Charles EA (1977) J Am Ceram Soc 60:22CrossRefGoogle Scholar
  11. 11.
    Bahr HA, Fischer G, Weiss HJ (1986) J Mater Sci 21:2716CrossRefGoogle Scholar
  12. 12.
    Schubert C, Bahr H-A, Weiss H-J (1986) Carbon 24:21CrossRefGoogle Scholar
  13. 13.
    Davidge RW, Tappin G (1967) Trans Brit Ceram Soc 66:405Google Scholar
  14. 14.
    Fett T, Munz D (1992) J Am Ceram Soc 75:3133CrossRefGoogle Scholar
  15. 15.
    Vandeperre LJ, Kristofferson A, Carlstrom E, Clegg WJ (2001) J Am Ceram Soc 84:104CrossRefGoogle Scholar
  16. 16.
    Vandeperre LJ, Inagaki Y, Clegg WJ (2003) J Mater Res 18:2724CrossRefGoogle Scholar
  17. 17.
    Lee WJ, Kim Y, Case ED (1993) J Mater Sci 28:2079CrossRefGoogle Scholar
  18. 18.
    Rice RW (1998) Porosity of ceramics. M. Dekker, New YorkGoogle Scholar
  19. 19.
    Lam DCC, Lange FF, Evans AG (1994) J Am Ceram Soc 77:2113CrossRefGoogle Scholar
  20. 20.
    Evans AG (1975) Proc Br Ceram Soc 25:217Google Scholar
  21. 21.
    Vandeperre LJ, Wang J, Clegg WJ (2004) Phil Mag 84:3689CrossRefGoogle Scholar
  22. 22.
    Yang J-F, Ohji T, Kanzaki S, Diaz A, Hampshire S (2002) J Am Ceram Soc 85:1512CrossRefGoogle Scholar
  23. 23.
    Wang J, Vandeperre LJ, Clegg WJ (2001) Ceram Eng Sci Proc 22:233CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Chen Yuan
    • 1
    • 2
  • Luc J. Vandeperre
    • 1
    • 3
  • Robert J. Stearn
    • 1
  • William J. Clegg
    • 1
    Email author
  1. 1.Gordon Laboratory, Department of Materials Science and MetallurgyUniversity of CambridgeCambridgeUK
  2. 2.School of Engineering, Metallurgy and MaterialsUniversity of BirminghamBirminghamUK
  3. 3.Department of MaterialsImperial College LondonLondonUK

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