Effect of magnesium on the composition, microstructure and mechanical properties of carbon fibres


This work was undertaken in order to provide more detailed information on the chemical and mechanical behaviour of carbon fibres during the elaboration of graphite-magnesium composite materials. For this purpose, PAN-based T300, pitch-based P55 and P100 carbon fibres were isothermally heat treated, at temperatures ranging from 450 to 700 °C, under a saturated vapour pressure of magnesium. The composition, microstructure and tensile strength of the resulting samples were characterized by chemical and electron probe microanalysis, Raman spectrometry, X-ray diffraction and mechanical test of single filaments. From the results obtained, it has been concluded that highly graphitized fibres such as pitch-based P55 or P100 are not affected by long-time annealing in the presence of magnesium vapour, whereas impure and disorded fibres such as PAN-based T300 undergo some chemical and microstructural modifications decreasing their mechanical properties.

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  1. 1.

    Ph. Roy and A. Mamode, Proceedings of the Third European Symposium on Spacecraft Materials in Space Environment, Noordwijk (European Spatial Agency, The Netherlands, 1985), 1–4 Oct 1985, ESA SP-232, p. 185.

    Google Scholar 

  2. 2.

    A. P. Levitt, E. Di Cesare and S. M. Wolf, Met. Trans. 3 (1972) 2455.

    CAS  Article  Google Scholar 

  3. 3.

    H. A. Katzman, J. Mater. Sci. 22 (1987) 144.

    CAS  Article  Google Scholar 

  4. 4.

    O. Remondiere, R. Pailler, A. Mamode and Ph. Roy, Proceedings of the First European Conference on Composite Materials, Bordeaux (EACM, Bordeaux, France, 1985), 24–27 September 1985, AMAC (Bordeaux), p. 732.

    Google Scholar 

  5. 5.

    S. P. Rawal, L. F. Allard and M. S. Misra, Proceedings of the 6th International Conference on Composite Materials, London, UK, 20–24 July 1987 (Elsevier Applied Science, London, 1987) p. 2169.

    Google Scholar 

  6. 6.

    A. P. Diwanji and I. W. Hall, ibid., p. 2265.

    Google Scholar 

  7. 7.

    E. G. Kendal and R. T. Pepper, US Patent 4082864, April (1978).

  8. 8.

    Y. Naerheim and M. W. Kendig, Int. SAMPE, Tech. Conf. 18 (Mater. Space Gathering Momentum, Seatle, 1986) p. 898.

    Google Scholar 

  9. 9.

    W. Rudorff, Chimia 19 (1965) 489.

    Google Scholar 

  10. 10.

    A. Perret, J. Rietmann, Helv. Chim. Acta 30 (1947) 218.

    CAS  Article  Google Scholar 

  11. 11.

    F. Irmann and W. D. Treadwell, ibid. 30 (1947) 775.

    CAS  Article  Google Scholar 

  12. 12.

    B. Hajek, P. Karen and V. Brozek, Collect. Czech. Chem. Commun. 48 (1983) 1963.

    CAS  Article  Google Scholar 

  13. 13.

    B. Hajek, P. Karen and V. Brozek, Collect. Czech. Chem. Commun. 48 (1983) 1969.

    CAS  Article  Google Scholar 

  14. 14.

    Janaf, “Thermochemical Tables”, 2nd Edn (National Bureau of Standards, Washington, 1971).

    Google Scholar 

  15. 15.

    S. I. Dementev, A. A. Zabolotskii, I. V. Romanovich, S. A. Prokofev and S. E. Salibekov, Poroshk. Metall. (Kiev), 171 (1977) 50.

    Google Scholar 

  16. 16.

    P. J. Goodhew, A. J. Clarke and J. E. Bailey, Mater. Sci. Engng 17 (1975) 3.

    CAS  Article  Google Scholar 

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Viala, J.C., Fortier, P., Claveyrolas, G. et al. Effect of magnesium on the composition, microstructure and mechanical properties of carbon fibres. J Mater Sci 26, 4977–4984 (1991). https://doi.org/10.1007/BF00549880

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  • Microstructure
  • Mechanical Property
  • Magnesium
  • Tensile Strength
  • Composite Material