RT Journal Article
T1 Synergistic effects of functionalized WS2 and SiO2 nanoparticles and a phosphonium ionic liquid as hybrid additives of low-viscosity lubricants
A1 Liñeira del Río, José Manuel
A1 Fernandes, Carlos M.C.G.
A1 Gonçalves, David E.P.
A1 Seabra, Jorge H.O.
K1 Ionic liquids
K1 Nanoparticles
K1 Friction
K1 Wear
AB This research shows the antifriction and antiwear synergies between a phosphonium ionic liquid (IL) and f-WS2 and f-SiO2 nanoparticles (NPs) as additives of a base oil with low viscosity (PAO6). Mass concentrations of 0.1 wt% nanoadditives and 1% IL were selected to formulate the nanolubricants. Pure sliding and rolling–sliding friction tests were performed at 120 °C, finding great friction reductions in comparison with the PAO6 base oil, specifically for the double hybrid nanolubricant (PAO6 + 1 wt% IL + 0.1 wt% f-WS2 + 0.1 wt% f-SiO2). Regarding the wear produced, the greatest antiwear behavior was also achieved for the double hybrid nanolubricant (width reduction of 48% and worn area decrease of 84%). Furthermore, by means of Raman microscopy and roughness examination of the worn surfaces, it can be proposed that the lubrication mechanism of doubled hybrid nanolubricants could be supported by the adsorbed tribofilm (IL and f-WS2) as well as the mending effects (f-WS2 and f-SiO2).
PB MDPI
YR 2024
FD 2024-02-16
LK https://hdl.handle.net/10347/38063
UL https://hdl.handle.net/10347/38063
LA eng
NO Liñeira del Río, J.M.; Fernandes, C.M.C.G.; Gonçalves, D.E.P.; Seabra, J.H.O. Synergistic Effects of Functionalized WS2 and SiO2 Nanoparticles and a Phosphonium Ionic Liquid as Hybrid Additives of Low-Viscosity Lubricants. Lubricants 2024, 12, 58. https://doi.org/10.3390/ lubricants12020058
NO This research was funded by Xunta de Galicia (ED431C 2020/10), by MCIN/AEI/10.13039/501100011033 through the PID2020-112846RB-C22 project and by LAETA, Portugal under project UID/50022/2020. JMLdR is grateful for financial support through the Margarita Salas program, funded by MCIN/AEI/10.13039/501100011033 and “NextGenerationEU/PRTR”.
DS Minerva
RD 1 may 2026