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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1998, Vol. 19 ›› Issue (5): 628-630.

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GRAPHITIZATION OF PAN BASED CARBON FIBRE BY AN ELECTRIC CURRENT PULSE

Shen Yifu1, Guo Xiaonan1, Zhang Kun1, Li Shunlin2, Zhou Benlian3   

  1. 1. Institute of Metal Research, Academia Sinica, Shenyang, 110015;2. Department of Materials Sciences and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016;3. Institute ofM etal Research and Internat ional Centre for Materials Physics, A cadem ia Sinica, Shenyang, 110015
  • Received:1997-11-21 Revised:1998-03-05 Online:1998-10-25 Published:1998-10-25

Abstract:

The structural change of PAN based carbon fibre by an electric current pulse was studied by means of X-ray diffraction(XRD) and transmission electron microscopy(TEM). The results show that the tubostratic structure of non graphitizing carbon in the PAN based carbon fibre can be transformed into graphited structure by a millisecond pulse electric current. The degree of graphitization is 0.484. This non equilibrium graphitization of the PAN based carbon fibre induced by an electric current pulse may be explained with the theory of structure relaxation under the external force.

Key words: carbon fibre, elect ric current pulse, graph it izat ion

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