Advertisement

Journal of Materials Science

, Volume 32, Issue 4, pp 887–892 | Cite as

Heat treatment of wollastonite-type Y–Si–Al–O–N glasses

  • K LIDDELL
  • D. P THOMPSON
Article

Abstract

Cumulative work over the last twenty years has defined the glass-forming regions in several M–Si–Al–O–N systems (M = Mg, Ca, Y, Ln) with the resulting crystalline products identified after heat treatment. Glass-forming regions in nitrogen-rich sialon glasses have been recently reported and heat treatment of some of these glasses in the Y–Si–Al–O–N system has been performed. The crystallization of yttrium-containing glasses is particularly sensitive to small variations in composition and heat treatment temperature and in the current work the results of three series are discussed: (1) a single composition, Y15.2Si14.6Al8.7O54.6N6.9 (16 e/oN), treated at 30 °C intervals between 875–1410 °C; (2) compositions of a constant Y: Si:Al ratio of 3:3:2 and up to 32 e/oN and (3) selected compositions lying on the 28 e/o N plane. Two different sets of crystalline products are found to form above and below 1200 °C.

Keywords

Heat Treatment Nitrogen Content Wollastonite Sialon Unit Cell Dimension 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    R. A. L. DREW, S. HAMPSHIRE and K. H. JACK, “Progress in Nitrogen Ceramics, Proc. NATO Adv. Study Inst., Ser. E”, edited by F. L. Riley, (1983) 323–330.Google Scholar
  2. 2.
    R. A. L. DREW, PhD thesis, University of Newcastle upon Tyne (1980).Google Scholar
  3. 3.
    J. A. FERNIE, G. LENG-WARD and M. H. LEWIS, J. Mater Sci. Lett. 9 (1989) 29.CrossRefGoogle Scholar
  4. 4.
    G. LENG-WARD and M. H. LEWIS, in “Glasses and Glass-Ceramics”, edited by M. H. Lewis (1989) pp. 106–155.Google Scholar
  5. 5.
    Idem, Mater. Sci. Engng, 71 (1985) 101.CrossRefGoogle Scholar
  6. 6.
    P. KORGUL and D. P. THOMPSON, Brit. Ceram. Proc., Complex Microstructures 20 (1989) 69.Google Scholar
  7. 7.
    J. GRINS, P.-O. KÄLL, K. LIDDELL, P. KORGUL and D. P. THOMPSON, in “New Materials and their Applications II”, (1990) pp. 427–434.Google Scholar
  8. 8.
    H. MANDAL and D. P. THOMPSON, in II International Ceramic Congress Proceedings, Vol 1-Traditional Ceramics, eds M. L. Öveço{lu, H. Yaparlar (Turkish Ceramic Society, 1994) pp. 366377.Google Scholar
  9. 9.
    K. LIDDELL, H. MANDAL and D. P. THOMPSON, J. Eur. Ceram. Soc. (in press).Google Scholar
  10. 10.
    E. ZHANG, K. LIDDELL and D. P. THOMPSON, Brit. Cer. Trans. (in press).Google Scholar
  11. 11.
    C. J. SPACIE, K. LIDDELL and D. P. THOMPSON, J. Mater. Sci. Lett. 7 (1988) 95.CrossRefGoogle Scholar

Copyright information

© Chapman and Hall 1997

Authors and Affiliations

  • K LIDDELL
    • 1
  • D. P THOMPSON
    • 1
  1. 1.Materials Division, Department of Mechanical, Materials & Manufacturing EngineeringUniversity of NewcastleNewcastle upon TyneUK

Personalised recommendations