Study on the microstructure and properties of Cu-graphite-Cr3C2 composites prepared by in-situ reactive synthesis

Study on the microstructure and properties of copper/graphite composites with two-step method and copper-modified graphite

“…During the mutual friction between the composite surface and the counter-abrasive parts, the copper-plated layer can play a role of protecting the graphite, so that the graphite on the contact surface is not extruded, but it can form a continuous and constantly replenished lubrication mechanism, which can effectively enhance the friction coefficient of the composite [26] .As indicated in Table 1, average friction coefficient of the copper-coated C/Cu composites prepared in this work and other literature [27][28][29][30][31] . Cf/Cu/C composites 0.26 [27] Cu-graphite-Cr3C2 Composites(Air) 0.4644 [28] Ti2SnC-copper/graphite 0.15 [3] foam copper-copper/graphite(60%graphite) 0.162 [29] Ag-Cu-Ni-graphite(1wt%graphite) 0.183 [30] Cu-Ni-graphite(1wt%graphite) The three-dimensional profile analysis of the wear scar morphology of copper-plated C/Cu composites with different graphite contents is shown in Figure 14. From the Figure 14, the width and depth of the abrasion marks of copper-plated C/Cu composites with different graphite contents can be observed, and the data corresponding to the width and depth of the abrasion marks were obtained after Origin fitting as shown in Table 2.…”