The composite material was obtained by chemical vapor deposition growth of carbon nanotubes on the surface of aluminum particles followed by high-temperature compaction under pressure. The content of carbon nanotubes was 1 wt.%. A composite material with a hardness of 58–60 HB, which is two times higher than the hardness of original aluminum with an adjustable thermal conductivity of 50–150 W/(m × K) and with a low density of 2.7 g/cm3 have been obtained. It was found that the hardness and thermal properties could be adjusted depending on the temperature during hot pressing by controlling the formation of Al3C4 carbide.
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