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Abstract
Tribological characteristics of aluminium-graphite composites, produced
using powder metallurgy technique, are studied by investigating both the
composite variables and the wear test variables. The composite variables
are; the graphite weight fraction, the graphite particle size and the
aluminium matrix hardness. The wear test variables are; the sliding
distance, the contact pressure and the sliding velocity. The composite
samples are produced using hot extrusion process. The evaluation of the
variation in wear behaviour of the composites is achieved by the
determination of the amount of weight-loss, the wear rate in the steady
state region and by the examination of surface topography of samples
after the wear tests, using the SEM. Also, the surface composition of the
samples is detected using the energy dispersive X-ray analysis.