Skip to main content
Log in

Microstructures and subcritical crack growth in oxidized hot-pressed Si3N4

  • Published:
Journal of Materials Science Aims and scope Submit manuscript

Abstract

The microstructure of the oxide scales, primarily the size, distribution, and density of the pits, was characterized in hot-pressed Si3N4 oxidized at different temperatures from 1300 to 1450‡ C. These microstructural features and the chemical changes in Si3N4 due to oxidation were related to the elevated-temperature subcritical crack-growth (SCG) behaviour. Oxidation at 1375‡ C for 240h resulted in a measurable improvement in SCG over that in as-hot-pressed and 1300‡ C-oxidized Si3N4.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. F. F. Lang, J. Amer. Ceram. Soc. 57 (1974) 84.

    Google Scholar 

  2. A. G. Evans and S. M. Wiederhorn, J. Mater. Sci. 9 (1974) 270.

    Google Scholar 

  3. A. G. Evans, M. Linzer and L. R. Russell, Mater. Sci. Eng. 15 (1974) 253.

    Google Scholar 

  4. A. G. Evans, in “Ceramics for High Performance Applications”, Proceedings of the Second Army Materials Technology Conference, Hyannis, Massachusetts, 13 to 16 November 1973, edited by J. J. Burke, A. E. Gorum and R. N. Kate (Brook Hill Publishing Co., Chestnut Hill, MA, 1974) p. 373.

    Google Scholar 

  5. K. D. McHenry and R. E. Tressler, J. Amer. Ceram. Soc. 63 (1980) 152.

    Google Scholar 

  6. S. C. Singhal, J. Mater. Sci. 11 (1976) 500.

    Google Scholar 

  7. D. Cubiccioyti, K. H. Lau and R. L. Jones, J. Electrochem. Soc. 124 (1977) 1955.

    Google Scholar 

  8. F. F. Lange and B. I. Davis, Bull. Amer. Ceram. Soc. 59 (1980) 827.

    Google Scholar 

  9. M. G. Medniratta and J. J. Petrovic, J. Amer. Ceram. Soc. 61 (1978) 226.

    Google Scholar 

  10. W. C. Tripp and H. C. Graham, ibid. 59 (1976) 399.

    Google Scholar 

  11. A. J. Kiehle, L. K. Heung, P. J. Gielisse and T. J. Rockett, ibid. 58 (1975) 17.

    Google Scholar 

  12. J. M. Birch and B. Wilshire, J. Mater. Sci. 13 (1978) 2927.

    Google Scholar 

  13. B. S. B. Karunatatne and M. H. Lewis, ibid. 15 (1980) 1781.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Das, G., Mendiratta, M.G. & Cornish, G.R. Microstructures and subcritical crack growth in oxidized hot-pressed Si3N4 . J Mater Sci 17, 2486–2494 (1982). https://doi.org/10.1007/BF00543879

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00543879

Keywords

Navigation