Analysis of anisotropic heat and thermal diffusivity of thermally expanded graphite

Dmitriy A. Prokhorov; Maksim G. Rybin; Sergei M. Zuev

doi:10.17308/kcmf.2025.27/12809

Dmitriy A. Prokhorov MIREA - Russian Technological University, 78 Vernadsky av., Moscow 119454, Russian Federation; SSC RF FSUE NAMI - State Scientific Center of the Russian Federation Federal State Unitary Enterprise Central Scientific Research Automobile and Automotive Engines Institute, 2 Avtomotornaya st., Moscow 125438, Russian Federation
Maksim G. Rybin RUSGRAFEN LLC, 15 Biologov av., Moscow Region, Serpukhov urban district, Obolensk settlement 142279, Russian Federation https://orcid.org/0000-0003-1529-5326
Sergei M. Zuev MIREA - Russian Technological University, 78 Vernadsky av., Moscow 119454, Russian Federation; SSC RF FSUE NAMI - State Scientific Center of the Russian Federation Federal State Unitary Enterprise Central Scientific Research Automobile and Automotive Engines Institute, 2 Avtomotornaya st., Moscow 125438, Russian Federation https://orcid.org/0000-0001-7033-1882

DOI: https://doi.org/10.17308/kcmf.2025.27/12809

Keywords: Two-dimensional allotropic modification of carbon, Graphene, Thermally expanded graphite, Anisotropy, Cooling

Abstract

Purpose: This paper aims to look into the anisotropic thermal diffusivity of thermally expanded graphite (TEG) foil using flash method. Its structure is compared with graphene oxide (GO) multilayer foil. Morphology, diffractogram and surface profilometry of TEG and GO produced by two different manufacturing processes are demonstrated. TEG was made of intercalated graphite by thermolysis, and GO was made by microwave-assisted graphite oxide peeling (MEGO).

Experimental: The paper studies temperature distribution in the TEG sample as a result of continuous exposure to laser radiation and compares it to those of copper and aluminum samples.

Conclusions: It also provides a perspective on possible application of TEG in heat transfer

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Author Biographies

Dmitriy A. Prokhorov, MIREA - Russian Technological University, 78 Vernadsky av., Moscow 119454, Russian Federation; SSC RF FSUE NAMI - State Scientific Center of the Russian Federation Federal State Unitary Enterprise Central Scientific Research Automobile and Automotive Engines Institute, 2 Avtomotornaya st., Moscow 125438, Russian Federation

postgraduate student of the Department of Optical-Electronic Devices and Systems,
MIREA - Russian Technological University, Chief Specialist of FSUE “NAMI”, (Moscow, Russian Federation)

Maksim G. Rybin, RUSGRAFEN LLC, 15 Biologov av., Moscow Region, Serpukhov urban district, Obolensk settlement 142279, Russian Federation

Cand. Sci. (Phys.–Math.), Deputy General Director for Science, Rusgrafen LLC (Moscow Region,
Serpukhov Urban District, Obolensk settlement, Russian Federation)

Sergei M. Zuev, MIREA - Russian Technological University, 78 Vernadsky av., Moscow 119454, Russian Federation; SSC RF FSUE NAMI - State Scientific Center of the Russian Federation Federal State Unitary Enterprise Central Scientific Research Automobile and Automotive Engines Institute, 2 Avtomotornaya st., Moscow 125438, Russian Federation

Cand. Sci. (Phys.–Math.), Associate Professor, Associate Professor of the Department of Optical-
Electronic Devices and Systems, MIREA - Russian Technological University, Head of Department of FSUE
“NAMI”, (Moscow, Russian Federation)

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