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    Electromagnetic properties of carbon and graphite

    Time:2023.08.24Browse:1

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    Artificial graphite is not necessarily a good conductor of electricity, but structurally belongs to the so-called polycrystalline graphite. Polycrystalline graphite is a carbon material with good graphitization performance obtained by heating at high temperatures. Carbon materials are generally obtained by treating organic matter in a reducing atmosphere, inert atmosphere, or vacuum. The carbon material obtained by heating below 1000 ℃ is not called carbonized material, but rather considered as an insulator. Only by heating the carbonized material above 1000 ℃ can the specific resistance rapidly decrease and become a good conductor of electricity. The polycrystalline graphite obtained by this method is still a carbon material in a sense, and artificial graphite requires temperature treatment above 2500 ℃ under atmospheric pressure. The change in electrical properties of carbon materials and carbides during simultaneous heating treatment is a very interesting and profound issue.




    A solid state of a good conductor of electricity, such as metal, that contains a load body of electricity. Solids are composed of atoms, which have nuclei and electrons. It is easy to imagine that in this case, the electric load of a solid is composed of unrestricted free electrons in the atoms that make up the solid, known as conductive electrons. For neutral isolated atoms, electrons are stabilized with various inherent energy states. When such atoms aggregate into a solid, conductive electrons belong to the outermost electrons, namely valence electrons.

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    Chemical properties of graphite and carbon materials

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