Synergetic lubrication of Cross-Linked Nanocomposites and Enhanced the tribological performance of Ti-DLC film

Two-dimensional(2D) nanocomposites exhibit theoretically and experimentally considerable promise for lowering friction and dissipating energy in dry sliding. However, a significant obstacle still stands in lower friction by introducing the 2D nanocomposites in oil lubrication environment. Here, g-C3N4/GO nanocomposites with a 2D layered structure were synthesized successfully. Ti-DLC film was used to examine the tribological performance of graphene oxide (GO), graphitic carbon nitride (g-C3N4), and carbon nitride/graphene oxide (GO/g-C3N4) nanocomposites in oil. As lubrication additives, the friction-reducing and anti-wear properties of GO/g-C3N4 nanocomposites were superior than a single nanomaterial of GO or g-C3N4 nanosheets. The synergistic lubricating effect involves the easy interlayer shear resulting from the oleophilic and distinct microscopic heterojunction stacking structure of the GO/g-C3N4 nanocomposites. This led to the formation of an adsorption lubrication film containing PAO6, g-C3N4, and GO. These innovative investigations have demonstrated that adding 2D GO/g-C3N4 nanocomposites into PAO6 is an intriguing approach to improving the dependability and energy efficiency of current mechanical systems.