Abstract
The aluminum-carbon nanofiber compacted materials fabricated by hot pressing are studied. The carbon content and the compacting temperature are shown to affect the hardness of the aluminum-carbon nanofiber compacted composite material: the hardness increases from 30 to 57 HB when the carbon nanofiber concentration increases from 0 to 1.5 wt %. The chemical state of the composite components is studied by X-ray photoelectron spectroscopy. Carbon nanofibers transform into an amorphous modification at a temperature of 980°C, which corresponds to the decrease in the hardness. Aluminum carbide Al4C3 is found to form, and its content increases monotonically in the hot pressing temperature range from 720 to 1370°C.
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