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M. A. Eryomina,S. F. Lomayeva,V. V. Tarasov,S. N. Paranin,I. L. Lomaev,K. G. Mikheev,S. L. Demakov 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.6
Wide application of hard composite materials in modern technologies stimulates a search for new compositions and moreefficient and cheaper ways of their obtaining. A novel Ti carbohydride/CuTi/CuTi2/GNP (few-layer graphene or graphitenanoplatelets) composites were produced via magnetic pulsed compaction of Ti, Cu and graphite powders mechanicallymilled in liquid organic medium for 4 h. Phase composition and microstructure were examined by X-ray diffraction, scanningelectron microscopy, transmission electron microscopy and Raman spectroscopy. Density, microhardness, ultimatecompression strength, abrasive wear resistance and sliding wear resistance of the composites were studied. The compositesconsisted of hexagonal and cubic titanium carbohydrides, CuTi2and CuTi intermetallics, ~ 5 wt% of GNP and amorphouscarbon. The presence of GNP and amorphous carbon resulted in higher wear resistance under conditions of dry frictionagainst steel (1 wt%C, 1.5 wt%Cr) but lower composite density, microhardness, ultimate compression strength and abrasionwear resistance as compared with the GNP-free composites.