Advertisement

Journal of Materials Science

, Volume 30, Issue 21, pp 5449–5456 | Cite as

Thermodynamic stability of silicon oxycarbide Si5C6O2 (Nicalon)

  • M. Nagamori
  • J. -A. Boivin
  • A. Claveau
Papers

Abstract

The standard entropy and heat of formation of amorphous silicon oxycarbide, Si5C6O2, have been assessed to be 161.1 J K−1 mol−1 and — 1282.3 kJ mol−1 respectively, based in part on the literature data of the mass-spectrometric vapour pressure of SiO(g) over a Nicalon fibre. Using the so-obtained standard Gibbs energy of Si5C6O2, new phase relations (predominance diagrams) of the Si-C-O system have been computed and graphically shown for the temperature range 300–2400 K, including such condensed phases as C, Si, SiC, Si2O, SiO, Si2O3, SiO2 and Si5C6O2. The thermal behaviour of Nicalon fibres can be quantified thermodynamically by use of the predominance diagrams.

Keywords

Polymer Silicon Entropy SiO2 Vapour Pressure 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    S. Yajima, J. Hayashi and M. Omori, Chem. Lett. 9 (1975) 931.CrossRefGoogle Scholar
  2. 2.
    S. Yajima, K. Okamura, T. Matsuzawa, Y. Hasegawa and T. Shishido, Nature 279 (1979) 706.CrossRefGoogle Scholar
  3. 3.
    T. Ishikawa, H. Ichikawa and H. Teranishi, in “High Temperature Materials Chemistry IV”, edited by Z. A. Munir, D. Cubicciotti and H. Tagawa (The Electrochemical Society, Pennington, NJ, 1988) pp. 205–11.Google Scholar
  4. 4.
    M. Nagamori, J.-A. Boivin and A. Claveau, J. Noncryst. Solids 189 (1995) in press.Google Scholar
  5. 5.
    Idem, Metall. Mater. Trans. B 27B (1996) to be published.Google Scholar
  6. 6.
    S. M. Johnson, R. D. Brittain, R. H. Lamoreaux and D. J. Rowcliffe, J. Am. Ceram. Soc. 71 (1988) C132.Google Scholar
  7. 7.
    S. M. Johnson, R. D. Brittain and R. H. Lamoreaux, in “High Temperature Materials Chemistry IV”, edited by Z. A. Munir, D. Cubicciotti and H. Tagawa (The Electrochemical Society, Pennington, NJ, 1988) pp. 355–61.Google Scholar
  8. 8.
    E. Bouillon, D. Mocaer, J. F. Villeneuve, R. Pailler, R. Naslain, M. Monthioux, A. Oberlin, C. Guimon and G. Pfister, J. Mater. Sci. 26 (1991) 1517.CrossRefGoogle Scholar
  9. 9.
    C. Laffon, A. M. Flank, P. Lagarde, M. Laridjani, R. Hagege, P. Olry, J. Cotteret, J. Dixmier, J. L. Miquel, H. Hommel and A. P. Legrand, ibid. 24 (1989) 1503.CrossRefGoogle Scholar
  10. 10.
    G. S. Bibbo, P. M. Benson and C. G. Pantano, ibid. 26 (1991) 5075.CrossRefGoogle Scholar
  11. 11.
    V. Belot, R. J. P. Corriu, D. Leclercq, P. H. Mutin and A. Vioux, J. Non-Cryst. Solids. 144 (1992) 287.CrossRefGoogle Scholar
  12. 12.
    P. Greil, J. Europ. Ceram. Soc. 6 (1990) 53.CrossRefGoogle Scholar
  13. 13.
    N. Jia, R. Bodet and R. E. Tressler, J. Am. Ceram. Soc. 76 (1993) 3051.CrossRefGoogle Scholar
  14. 14.
    J. Lipowitz, H. A. Freeman, R. T. Chen and E. R. Prack, Adv. Ceram. Mater. 2 (1987) 121.CrossRefGoogle Scholar
  15. 15.
    T. Mah, N. L. Hecht, D. E. McCullum, J. R. Hoenigman, H. M. Kim, A. P. Katz and H. A. Lipsitt, J. Mater. Sci. 19 (1984) 1191.CrossRefGoogle Scholar
  16. 16.
    L. Porte and A. Sartre, ibid. 24 (1989) 271.CrossRefGoogle Scholar
  17. 17.
    T. Shimoo, H. Chen, K. Kakimoto and K. Okamura, J. Ceram. Soc. Jpn Int. Ed. 101 (1993) 287.Google Scholar
  18. 18.
    Ph. Schreck, C. Vix-Guterl, P. Ehrburger and J. Lahaye, J. Mater. Sci. 27 (1992) 4243.CrossRefGoogle Scholar
  19. 19.
    A. Colson, C. R. Acad. Sci. Paris 94 (1882) 1316.Google Scholar
  20. 20.
    O. Kubaschewski and C. B. Alcock, “Metallurgical Thermochemistry” (Pergamon Press, New York, 1979).Google Scholar
  21. 21.
    I. Barin and O. Knacke, “Thermochemical properties of Inorganic Substances” (Springer, New York, 1973).Google Scholar
  22. 22.
    M. Nagamori, K. Ito and M. Tokuda, Metall. Mater. Trans. B 25B (1994) 703.CrossRefGoogle Scholar
  23. 23.
    T. Shimoo and K. Okamura, Funtai oyobi Funmatsuyakin (Jpn) 39 (1992) 447.Google Scholar
  24. 24.
    M. Nagamori, I. Malinsky and A. Claveau, Metall. Trans. 17B (1986) 503.CrossRefGoogle Scholar
  25. 25.
    Idem. ibid. 18B (1987) 472.CrossRefGoogle Scholar

Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • M. Nagamori
    • 1
  • J. -A. Boivin
    • 1
  • A. Claveau
    • 1
  1. 1.Centre de Recherches MinéralesQuebec GovernmentSte-FoyCanada

Personalised recommendations