Abstract
In this study, carbon nanotubes (CNTs) reinforced Cu-8.3Al matrix composites with different volume fractions of CNTs (0, 0.5, 1, 2 vol%) were produced by spark plasma sintering and hot rolling. The effects of carbon nanotubes on the microstructure, electrical conductivity and dry sliding wear behavior of the Cu-8.3Al alloy were studied. The addition of CNTs increased the electrical conductivity of Cu-8.3Al alloy. The composite with 1 vol% CNTs exhibited the best electrical conductivity in this work. Besides, under dry reciprocating sliding condition, the addition of a low volume fraction of CNTs (0.5 vol%) can improve the frictional properties of composites. Increasing the volume fraction of CNTs to higher values leads to fatigue wear and deterioration of the frictional properties. This study shows that by adding CNTs, the frictional and electrical properties of Cu-8.3Al alloy can be improved, which provides scientific guidance for the practical application of Cu-Al/CNTs composites.
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