Skip to main content
Log in

The standard molar enthalpies of formation of α−Si3N4 and β−Si3N4 by combustion calorimetry in fluorine, and the enthalpy of the α-to-β transition at the temperature 298.15 K

  • Articles
  • Published:
Journal of Materials Research Aims and scope Submit manuscript

Abstract

The standard molar enthalpies of formation ΔfH°m of α−Si3N4 and β−Si3N4 have been determined by fluorine combustion calorimetry: ΔfH°m (Si3N4, cr, α, 298.15 K) = − (828.9 ± 3.4) kJ · mol−1 and ΔfH°m (Si3N4, cr, β, 298.15 K) = – (827.8 ± 2.5) kJ · mol−1. These results indicate that the enthalpy of the α-to-β transition, approximately (1 ± 4) kJ · mol−1, is negligible within experimental uncertainty.

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.

Similar content being viewed by others

References

  1. Thermodynamic Properties of Individual Substances, 4th ed., edited by L. V. Gurvich, I.V. Veyts, and C. B. Alcock (Hemisphere, New York, 1991), Vol. 2.

    Google Scholar 

  2. J. L. Wood, G. P. Adams, J. Mukerji, and J. L. Margrave, Third International Conference on Chemical Thermodynamics, Baden-bei-Wien, Austria, 3–7 September, 1973, pp. 115–122.

  3. P. Rocabois, C. Chatillon, and C. Bernard, J. Am. Ceram. Soc. 79, 1351–1360 (1996).

    Article  CAS  Google Scholar 

  4. R. Riedel, A. Kienzle, W. Dressler, L. Ruwisch, J. Bill, and F. Aldinger, Nature 382, 796–798 (1996).

    Article  CAS  Google Scholar 

  5. R. A. Andrievski, Int. J. Self-Propagating High-Temp. Synth. 4, 237–244 (1995).

    CAS  Google Scholar 

  6. C. P. Gazzara and D. R. Messier, Am. Ceram. Soc. Bull. 56, 777–780 (1977).

    CAS  Google Scholar 

  7. P. A.G. O’Hare and G. A. Hope, J. Chem. Thermodyn. 24, 639–647 (1992).

    Article  Google Scholar 

  8. P. A. G. O’Hare, unpublished results.

  9. R. L. Nuttall, S. Wise, and W. N. Hubbard, Rev. Sci. Instrum. 32, 1402–1403 (1961).

    Article  CAS  Google Scholar 

  10. P. A. G. O’Hare, S. Susman, K. J. Volin, and S. C. Rowland, J. Chem. Thermodyn. 24, 1009–1017 (1992).

    Article  Google Scholar 

  11. G. K. Johnson, J. Chem. Thermodyn. 18, 801–802 (1986).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

O’Hare, P.A.G., Tomaszkiewicz, I. & Seifert, H.J. The standard molar enthalpies of formation of α−Si3N4 and β−Si3N4 by combustion calorimetry in fluorine, and the enthalpy of the α-to-β transition at the temperature 298.15 K. Journal of Materials Research 12, 3203–3205 (1997). https://doi.org/10.1557/JMR.1997.0417

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1557/JMR.1997.0417

Navigation