Wear prevention characteristics of binary oil mixtures

Rico, José Esteban Fernández; Battez, A. Hernández; Cuervo, Diego García

doi:10.1016/s0043-1648(02)00229-6

Cited by 33 publications

(6 citation statements)

References 3 publications

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“…ester) in a low viscosity non-polar oil (mineral oil or polyalphaolefin) [36][37][38] can take place when ILs are used as additives. The advantages of this lubrication mechanism were verified by Fernandez et al [39], who worked with a mixture of a polyalphaolefin (PAO6) and two esters (trimethylol propane trioleate and sunflower oil) at 5, 10, and 15 wt%. Taking into account the above-mentioned lubrication mechanism, a mixture of a polyalphaolefin (85 wt%) and trimethylol propane trioleate (15 wt%) was used in the formulation of oil-in-water emulsions in order to study the influence of different concentrations of emulsifiers on the lubrication under extreme pressure conditions [40].…”

Section: Introductionmentioning

confidence: 89%

Corrosion activity and solubility in polar oils of three bis(trifluoromethylsulfonyl) imide/bis(trifluoromethylsulfonyl) amide ([NTF 2 ]) anion-based ionic liquids

Fernández-González

Mallada

Viesca

et al. 2017

Journal of Industrial and Engineering Chemistry

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The corrosion behaviour and solubility of three bis (trifluoromethylsulfonyl) , as a component in a mixture with different base oils were analysed. Six polar oils suitable for use in lubrication were utilized as base oil. Solubility tests were performed by using turbidimetry, and corrosion was checked at 4 v/v% by examining the roughness and chemical composition of the surface after 21 days. The results showed that long carbon chains in the cation improve the solubility greatly in diesters and slightly in polyolesters. Corrosion was not detected at this concentration.

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Section: Introductionmentioning

confidence: 89%

Corrosion activity and solubility in polar oils of three bis(trifluoromethylsulfonyl) imide/bis(trifluoromethylsulfonyl) amide ([NTF 2 ]) anion-based ionic liquids

Fernández-González

Mallada

Viesca

et al. 2017

Journal of Industrial and Engineering Chemistry

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“…This favorable differential behavior could be attributable to the higher thermal stability of the studied FAIL [98], which is related to its longer alkyl chain length. behavior was probably related to its better chemical affinity with the metallic surface due to its having both higher polarity [53,54,88] and affinity for the metal surfaces. However, the antiwear behavior of the blend with the base oil M1 at 100 • C worsened, probably due to the lower polar nature of mineral oils.…”

Section: Tribological Testsmentioning

confidence: 99%

“…Some lubrication research found that additizing non-polar oils (mineral or polyalphaolefin) with a polar additive at low concentration could improve the adsorption of the former on metallic surfaces due to the polar nature of these substances [52][53][54]. Taking this phenomenon into account, several studies have been published employing ILs as a lubricant additive at low concentrations in non-polar oils, forming base oil-IL emulsions or unstable base oil-IL blends [55][56][57][58][59].…”

Section: Introductionmentioning

confidence: 99%

Methyltrioctylammonium Octadecanoate as Lubricant Additive to Different Base Oils

et al. 2022

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This study investigates the use of an ionic liquid obtained from fatty acids (FAIL) as an additive at 2 wt.% in two different base oils: a mineral oil (M1) and a polyol ester (E1). Physicochemical characterization of the base oil–FAIL blends confirmed the miscibility of the FAIL in the base oils. The addition of the FAIL hardly changed the density of the base oils and the viscosity slightly increased at lower temperatures. The tribological performance of the base oils and their blends with the FAIL was determined using three different tests: Stribeck curve determination and tribofilm formation tests, both under sliding/rolling motion, and reciprocating wear tests. The M1 + FAIL blend showed the lowest friction values under the mixed lubrication regime due to its higher viscosity, while the E1 + FAIL showed the lowest friction values under the elastohydrodynamic lubrication regime, which may well have been due to its higher polarity. Only the E1 + FAIL blend outperformed the antiwear behavior of the base oil, probably because it has better chemical affinity (higher polarity) for the metallic surface. SEM images showed that the predominant wear mechanism was adhesive-type with plastic deformation and XPS studies proved that the presence of increasing amounts of organic oxygen on the wear scar caused better antiwear performance when the E1 + FAIL blend was used.

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“…4,5 Currently, there are few reports of the lubrication properties of vegetable oil-hydrocarbon blends. Fernandez Rico et al 6 investigated the anti-wear properties of PAO with up to 15% of sunfl ower oil using four-ball tribometer. They report that the behaviour is non-linear; the smaller wear scar diameters are observed at 5 and 15%, while the biggest are at 10% sunfl ower oil.…”

Section: Introductionmentioning

confidence: 99%

Elastohydrodynamic study of vegetable oil–polyalphaolefin blends

Bantchev

Biresaw

2008

Lubrication Science

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Two polyalphaolefi ns, of higher and lower viscosity than vegetable oils, were used to make binary blends of varying compositions with soy bean and canola oils. The pure oils and the blends were used in viscosity and fi lm thickness investigations. The effects of composition and temperature on viscosity were found to agree well with the theoretical predictions of a simple mixing law. The fi lm thicknesses of the various blends under elastohydrodynamic conditions were measured at 20 N load, and varying entrainment speeds and temperatures. From the data, pressure-viscosity coeffi cients, α, as a function composition and temperature were obtained. The resulting α values were compared with theoretical predictions. Experimental values of α as a function of composition showed a slight negative or no deviation from the values predicted by an ideal mixing model. On the other hand, experimental values of α displayed a mild decrease with increasing temperature, while the model predicted a sharp decrease with increasing temperature. Published in

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Wear prevention characteristics of binary oil mixtures

Cited by 33 publications

References 3 publications

Corrosion activity and solubility in polar oils of three bis(trifluoromethylsulfonyl) imide/bis(trifluoromethylsulfonyl) amide ([NTF 2 ]) anion-based ionic liquids

Corrosion activity and solubility in polar oils of three bis(trifluoromethylsulfonyl) imide/bis(trifluoromethylsulfonyl) amide ([NTF 2 ]) anion-based ionic liquids

Methyltrioctylammonium Octadecanoate as Lubricant Additive to Different Base Oils

Elastohydrodynamic study of vegetable oil–polyalphaolefin blends

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