Journal of Materials Science

, Volume 26, Issue 18, pp 4977–4984 | Cite as

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

  • J. C. Viala
  • P. Fortier
  • G. Claveyrolas
  • H. Vincent
  • J. Bouix


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.


Microstructure Mechanical Property Magnesium Tensile Strength Composite Material 
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Copyright information

© Chapman & Hall 1991

Authors and Affiliations

  • J. C. Viala
    • 1
  • P. Fortier
    • 1
  • G. Claveyrolas
    • 1
  • H. Vincent
    • 1
  • J. Bouix
    • 1
  1. 1.U.H.A. CNRS 116Laboratoire de Physico-chimie Minérale 1Villeurbanne CedexFrance

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