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Aluminum alloy matrix samples reinforced with short carbon fibers or hybrid SiC p  composites were prepared, and friction and wear tests were carried out on a wear test machine using a rotation ring on a stationary disk at high load. Optical microscopy, scanning electron microscopy and energy-dispersive analysis of X-rays were used to investigate the composites, worn surface, wear debris and composition changes after wear. By comparison with Al alloy, Al/SCF and Al/SCF/SiC p , the results indicate that the incorporation of SCF into Al alloys improves the wear resistance significantly, the combination of a mechanically mixed layer formed on the worn surface and hard SiC p  are responsible for the good tribological properties of the hybrid Al/SCF/SiC p  composites at high load. During sliding, an obvious decrease in the temperature rise with SCF addition is attributed to the good anti-friction of SCF.

Tribological behavior of short carbon fiber or hybrid with SiC p reinforced Al alloy composites