Thermal Conductivity of Composite Materials Copper-Fullerene Soot

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Abstract

Copper-based composites strengthened with fullerene soot nanoparticles of 20–30 nm size in concentration up to 23 vol.% were prepared via two methods: mechanical mixing and molecular level mixing. The dependence of thermal conductivity on the carbon concentration was studied. Maxwell’s model describes well the change in the thermal conductivity of the composite obtained by molecular level mixing. However, thermal conductivity of the composite produced by mechanical mixing is significantly lower than the calculated values, due to structural inhomogeneity and residual stresses. Comparison of the thermal conductivity of Cu-fullerene soot composites with that of Cu-based composites described in the literature showed that the prepared materials are not inferior in thermal conductivity to composites containing carbon nanotubes, despite the fact that fullerene soot has a much lower thermal conductivity.

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Koltsova, T., Bobrynina, E., Vozniakovskii, A., Larionova, T., & Klimova-Korsmik, O. (2022). Thermal Conductivity of Composite Materials Copper-Fullerene Soot. Materials, 15(4). https://doi.org/10.3390/ma15041415

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