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Soviet Powder Metallurgy and Metal Ceramics

, Volume 4, Issue 8, pp 674–680 | Cite as

Diamagnetic susceptibility and linear thermal expansion of graphitized carbons

  • A. S. Fialkov
  • Ya. G. Davidovich
  • P. A. Pshenichkin
  • G. S. Galeev
Test Methods and Properties of Materials

Conclusions

  1. 1.

    It is shown that there exists a relationship between the anisotropy coefficients of the diamagnetic susceptibility and the linear thermal expansion of graphitized carbons.

     
  2. 2.

    It has been found that the anisotropy coefficient of the diamagnetic susceptibility yields an indication on the growth of crystallographic texture in the material, this growth being determined mainly by the development of structuration in the powder components.

     
  3. 3.

    It has been found that the highest degree of structural isotropy in graphitized carbons prepared from oil cokes is attained when the cokes have been fired at temperatures corresponding to minimum Kχ The minimum of Kχ is found at firing temperatures of 600–700°C because at these temperatures the concentration of unpaired electron spins (and, hence, the concentration of free radicals) is lowest.

     
  4. 4.

    It has been shown how the binder content affects the magnetic susceptibility and the linear thermal expansion of graphitized carbons.

     

Keywords

Anisotropy Free Radical Thermal Expansion Magnetic Susceptibility Isotropy 
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.

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Literature cited

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Copyright information

© Consultants Bureau 1966

Authors and Affiliations

  • A. S. Fialkov
  • Ya. G. Davidovich
  • P. A. Pshenichkin
  • G. S. Galeev

There are no affiliations available

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