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Electrophysical properties of composition based on natural flake graphite and binder

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Abstract

The electrophysical properties of a highly filled composition based on natural flake graphite and coal tar pitch as a binder have been studied. Blanks have been obtained in a laboratory broaching press. The conductivity of pitch binder interlayers in the composition has been varied by heat treatment, and the electric resistivity and magnetoresistance along and across the texture axis have been measured. The thickness and imperfection of surface layers of graphite flakes have been assessed. The formation of structural defects of the surface layers is associated with a decrease in the size of mosaic blocks as a result of friction between flakes during mass movement under pressure in the conical part of the die. It has been shown that friction forces facilitate consolidation of the material and ensure directed orientation of stacks.

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Authors and Affiliations

  1. Chelyabinsk State University, Chelyabinsk, Russia

    A. V. Dmitriev & A. A. Ershov

Authors
  1. A. V. Dmitriev
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  2. A. A. Ershov
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Correspondence to A. V. Dmitriev.

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Original Russian Text ¢ A.V. Dmitriev, A.A. Ershov, 2011, published in Khimiya Tverdogo Topliva, 2011, no. 6, pp. 53–60.

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Dmitriev, A.V., Ershov, A.A. Electrophysical properties of composition based on natural flake graphite and binder. Solid Fuel Chem. 45, 411–417 (2011). https://doi.org/10.3103/S0361521911060036

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  • DOI: https://doi.org/10.3103/S0361521911060036

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