RT Journal Article
T1 Pressure-viscosity behaviour and film thickness in elastohydrodynamic regime of lubrication of ionic liquids and other base oils
A1 Fernández Pérez, Josefa
A1 Paredes, Xavier
A1 Gaciño, Félix M.
A1 Pérez Comuñas, María José
A1 Pensado, Alfonso S.
K1 Pressure-viscosity coefficient
K1 Film thickness
K1 Ionic liquid
K1 Vegetable base oils
K1 Synthetic base oils
AB Viscosities at high pressures for 16 base oils (six polyolesters, three polyglycols, six ionic liquids and squalane) were used to analyze the influence of their chemical structure on the pressure-viscosity coefficient, α. Comparisons with literature α values for vegetable bases (canola, soybean and jojoba oils) are also performed. For the molecular lubricants, we found trends that are coherent with the literature, whereas for ionic liquids (ILs), new trends were found. ILs based on tris(pentafluoroethyl)trifluorophosphate anion [FAP]−are those which present higher α values. The role of the lubricants in the central thickness in the isothermal elastohydrodynamic regime of lubrication was evaluated through the product η00.69 α0.56, η0 being the viscosity at 0.1 MPa. One of the [FAP]− ILs provides film thicknesses close to the polyglycols with similar viscosity. Bis(trifluoromethylsulfonyl)imide ILs and the shorter polypropyleneglycoldimethyl ethers are the lubricants that better avoid the changes on the film thicknesses with the temperature owing to a high viscosity index.
PB Wiley
YR 2013
FD 2013
LK https://hdl.handle.net/10347/38477
UL https://hdl.handle.net/10347/38477
LA eng
NO Fernández J., Paredes X., Gaciño F., Comuñas M., and Pensado A. S. (2014), Pressure-viscosity behaviour and film thickness in elastohydrodynamic regime of lubrication of ionic liquids and other base oils, Lubr. Sci., 26, 449–462. doi: 10.1002/ls.1236
NO This is the peer reviewed version of the following article: Fernández J., Paredes X., Gaciño F., Comuñas M., and Pensado A. S. (2014), Pressure-viscosity behaviour and film thickness in elastohydrodynamic regime of lubrication of ionic liquids and other base oils, Lubr. Sci., 26, 449–462. doi: 10.1002/ls.1236, which has been published in final form at https://doi.org/10.1002/ls.1236. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
NO This work has been supported by the Spanish Ministry of Science and Innovation and the EU FEDER Program under the project CTQ2011-23925. Financial support for the Galician Network on ILs, ReGaLIs (CN2012/210), provided by Xunta de Galicia is acknowledged. We are very grateful to Merck KGaA for the samples of ILs.
DS Minerva
RD 27 abr 2026