RT Journal Article
T1 Tribological improvement of low-viscosity nanolubricants: MoO3, MoS2, WS2 and WC nanoparticles as additives
A1 Liñeira del Río, José Manuel
A1 Fernandes, Carlos M.C.G.
A1 Seabra, Jorge H.O.
K1 Lubricant additives
K1 Surface analysis
K1 Nanoparticles
K1 Rolling–sliding
AB The aim of this research is studying the tribological performance of MoO3, MoS2, WS2 and WC nanoparticles as additives of PAO4. Pure sliding tribological tests were performed at 120 °C, finding outstanding friction and wear reductions in comparison with the PAO4, with maximum friction reductions of 64% for the 0.1 wt% MoS2 nanolubricant and greatest wear decreases for 0.1 wt% MoS2 nanolubricant: a width reduction of 62% and a worn area decrease of 97%. Raman mapping and a roughness evaluation of the worn pins confirmed the tribofilm formation and mending as tribological mechanisms. Rolling–sliding tests were conducted with best nanolubricants performance in pure sliding, observing excellent antifriction capabilities of MoS2 nanoparticles at low speeds, indicating that the use of nanoparticles is vital in boundary lubrication.
PB MDPI
YR 2024
FD 2024-03-10
LK https://hdl.handle.net/10347/38064
UL https://hdl.handle.net/10347/38064
LA eng
NO Liñeira del Río, J.M.; Fernandes, C.M.C.G.; Seabra, J.H.O. Tribological Improvement of Low-Viscosity Nanolubricants: MoO3, MoS2, WS2 and WC Nanoparticles as Additives. Lubricants 2024, 12, 87. https://doi.org/10.3390/ lubricants12030087
NO This investigation was funded by MCIN/AEI/10.13039/501100011033 through the PID2020-112846RB-C22 project and through Xunta de Galicia (ED431C 2020/10) and by LAETA, Portugal under project UID/50022/2020. JMLdR is grateful for the financial support by means of the Margarita Salas program, funded by MCIN/AEI/10.13039/501100011033 and “NextGenerationEU/PRTR”.
DS Minerva
RD 24 abr 2026