RT Journal Article
T1 Tribological performance of green nanolubricants using functionalized CaCO3 nanoparticles
A1 Liñeira del Río, José Manuel
A1 Fernandes, Carlos M.C.G.
A1 Gonçalves, David E.P.
A1 Seabra, Jorge H.O.
K1 Biolubricants
K1 Nanoparticles
K1 Functionalization
K1 Surface analysis
AB In response to the mounting concern over environmental pollution and the depletion of petroleum reserves, biolubricants have emerged as a promising alternative to mineral oil-based lubricants. Thus, the aim of this research is the tribological characterization of green castor and soybean nanolubricants containing functionalized CaCO3 nanoparticles. Friction improvements were reached with maximum friction decreases of 14 % and 18 % compared to castor and soybean oils. Concerning wear, optimal concentration for castor and soybean nanolubricants was intermediate concentration of 0.15 wt% with width wear reductions of 27 % and 24 % compared to castor and soybean oils, respectively. Tribological mechanisms of tribofilm formation, repairing and rolling-bearing were identified. In rolling-sliding tests, the use of nanoparticles was crucial at low speeds with outstanding friction reductions.
PB Elsevier
YR 2024
FD 2024-07-18
LK https://hdl.handle.net/10347/38066
UL https://hdl.handle.net/10347/38066
LA eng
NO Tribology International Volume 199, November 2024, 110007
NO This research is supported by Xunta de Galicia (ED431C 2020/10) 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". Furthermore, authors are also thankful to RIAIDT-USC for its analytical facilities.
DS Minerva
RD 4 may 2026