TiO₂ Nanoparticle/Fluorinated Reduced Graphene Oxide Nanosheet Composites for Lubrication and Wear Resistance

Abstract

The preparation of TiO2/F-rGO nanocomposites by an in situ synthesis method was discussed, and the nanocomposites were used as lubricant additives. The morphology and structure of TiO2/F-rGO nanocomposites showed that there was an excellent link between TiO2 nanoparticles and F-rGO nanosheets. The tribological results showed that TiO2/F-rGO nanocomposites as lubricant additives displayed a low coefficient of friction and excellent wear resistance capacity. Furthermore, it was illustrated that the TiO2 nanoparticles and the F-rGO nanosheets in the TiO2/F-rGO nanocomposites had a synergistic lubricating effect. The coefficient of friction­(COF) and wear rate of the TiO2/F-rGO nanocomposites decreased by 33.67% and 88.38%, respectively, compared with those of pure oil, suggesting that these nanocomposites display excellent application prospects as novel lubricant additives.

Enhanced tribological properties of copper metal-matrix composites reinforced with fluorinated graphene oxide nanosheets

“…Furthermore, low graphitic loadings (sub-10 wt%) into copper films greatly diminish frictional losses under low contact pressure nano-and macrotribological testing. 44,45,21 Fluorographenes have been utilized in oil-based [46][47][48][49] and polymer-based [50][51][52] lubricating formulations. However, the incorporation of fluorographenes into metal composites have scarcely been explored.…”

Tribology of Copper Metal-Matrix Composites Reinforced with Fluorinated Graphene Oxide Nanosheets: Implications for Solid Lubricants in Mechanical Switches

“…66 Furthermore, low graphitic loadings (sub-10 wt%) into copper films greatly diminish frictional losses under low contact pressure nano-and macrotribological testing. 38,67,68 Flurographenes have been utilized in oil-based [69][70][71][72][73] and polymer-based [74][75][76] lubricating formulations. However, the incorporation of fluorographenes into metal composites has scarcely been explored.…”

Preparation and Tribological Properties of a Multilayer Graphene-Reinforced TiO2 Composite Nanolubricant Additive

“…Zhao et al discussed the in situ synthesis of TiO 2 /F-RGO nanocomposites and the use of nanocomposites as lubricant additives. TiO 2 nanoparticles and F-RGO nanosheets in nanocomposites have a synergistic lubrication effect and have demonstrated a low friction coefficient and excellent wear resistance . Du et al demonstrated that the excellent lubrication performance of GO-TiO 2 nanocomposites was due to its excellent dispersion stability and the formation of an adsorption film, a carbon protective film, and transfer film, which resulted in good friction reduction and wear resistance .…”

“…TiO 2 nanoparticles and F-RGO nanosheets in nanocomposites have a synergistic lubrication effect and have demonstrated a low friction coefficient and excellent wear resistance. 15 Du et al demonstrated that the excellent lubrication performance of GO-TiO 2 nanocomposites was due to its excellent dispersion stability and the formation of an adsorption film, a carbon protective film, and transfer film, which resulted in good friction reduction and wear resistance. 16 Nano TiO 2 and graphene can be synergistically combined, resulting in a significant reduction in friction in comparison to pure nano TiO 2 .…”