Abstract
Graphene Nanoplates (GNPs), known for their outstanding performance, have found extensive applications in the preparation of metal composite carbon materials. In this investigation, a Directed Energy Deposition system was employed to effectively produce deposition specimens of NiCu/WC-12Ni + x wt% GNPs (x = 0, 0.5, 1.0, 1.5) composite material. The findings suggest that incorporating GNPs improved the microstructure of the NiCu/WC-12Ni deposited specimens, leading to a reduction in grain size with predominantly equiaxed and cellular grains. GNPs transformed into amorphous graphene spheres, uniformly distributed within the deposited structure. When 1 wt% GNPs were added, the average microhardness of the deposited specimens increased by approximately 15 %, the friction coefficient decreased from the original 0.318 to 0.257, and the wear rate decreased by 23.2 %. The primary wear mechanism observed was abrasive wear, demonstrating excellent wear resistance. Moreover, introducing a suitable quantity of graphene improved the electrochemical corrosion resistance of the deposited specimen.
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