چکیده
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In this study, in order to determine the effect of SiC nanoparticles on tribological properties of nanostructured
copper, the dry sliding wear and friction behaviors of nanostructured copper and copper reinforced with silicon
carbide nanoparticles, produced by high energy ball milling and spark plasma sintering, were investigated by
using an oscillating friction and wear tester under different normal loads. To determine the dominant wear
mechanism, the worn surfaces and obtained debris after wear tests were analyzed by scanning electron
microscope (SEM). The results showed that the addition of 4 vol% silicon carbide to copper matrix reduced the
wear track depth and the coefficient of friction. Investigation of the worn surfaces revealed that SiC
nanoparticles on the top of worn surface decreases the plastic deformation in subsurface region and alleviate
severe wear. Lower plastic deformation during dry sliding wear test was attributed to high hardness of the
nanocomposite that has been resulted from grain growth inhibiting and reinforcing effects of the nanoparticles.
Plastic deformation and delamination were determined as major wear mechanisms in both materials.
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