Effect of N-doped GO quantum dots with MoS2 and Al2O3 nanofluids on the surface quality of hot rolling of copper and steel plates

A solvothermal approach was used to generate N-doped graphene oxide quantum dots (NGOQDs) using MoS₂ and Al₂O₃ nanocomposites. Through the use of TEM, XRD, Raman, ATR-FTIR, and XPS, the produced composites' shape, composition, and structure were described. Tribological behavior and lubrication properties of NGOQDs-MoS₂ and NGOQDs-Al₂O₃ nanocomposites as additive in nanofluids during hot roll cladding of copper and steel were studied and rolling lubrication mechanism was disclosed. The outcome demonstrates that tribological performance may be greatly enhanced by combining NGOQDs, and surface quality of the rolled copper and steel, and the addition of NGOQDs-MoS₂ and NGOQDs-Al₂O₃ nanoparticles can further improve the hot-rolling lubrication properties. The tribofilm, formed through the tribochemically induced lubrication process, significantly enhances the wear and corrosion resistance of rolled copper and steel surfaces.