Thermophysical Properties of Fine-Grain MPG-7 Graphite with Chemical and Structural Heterogeneity

The thermal diffusivity of MPG-7 grade graphite samples with a density of 1802 to 1869 kg/m 3 was measured using the temperature wave method with chemical and structural heterogeneity in the temperature range from 600 to 1700 K. Based on the obtained results, the temperature dependences of the therm...

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Bibliographic Details
Published in:High temperature 2022-10, Vol.60 (5), p.616-620
Main Authors: Vershinin, A. V., Gorbatov, V. I., Kurichenko, A. A., Koitov, S. A.
Format: Article
Language:English
Subjects:
Atoms and Molecules in Strong Fields
Classical and Continuum Physics
Energy transfer
Graphite
Heat transfer
Heterogeneity
Industrial Chemistry/Chemical Engineering
Laser Matter Interaction
Materials Science
Physical Chemistry
Physics
Physics and Astronomy
Thermal conductivity
Thermal diffusivity
Thermophysical properties
Thermophysical Properties of Materials
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Summary:The thermal diffusivity of MPG-7 grade graphite samples with a density of 1802 to 1869 kg/m 3 was measured using the temperature wave method with chemical and structural heterogeneity in the temperature range from 600 to 1700 K. Based on the obtained results, the temperature dependences of the thermal conductivity are calculated, which allow to estimate the thermal conductivity of MPG-7 graphite depending on the type of its defectiveness (chemical and structural heterogeneities). It is shown that the observed differences in the values of the thermal conductivity of MPG-7 graphite, depending on the type of its defectiveness, can be associated with the electron contribution to the overall process of energy transfer.
ISSN:0018-151X
1608-3156
DOI:10.1134/S0018151X22020158