A comparison of tribological properties of nanolubricants containing carbon nanotori and additional additives

Sifuentes, Estefany Tovar; Kharissova, Oxana V.; Maldonado-Cortés, Demófilo; Peña-Parás, Laura; Michalczewski, R.; Kharissov, Boris Ildusovich

doi:10.1016/j.matchemphys.2021.124973

Cited by 9 publications

(9 citation statements)

References 43 publications

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“…However, the effect of HNTs was observed in the WSD of the three lower steel balls; at 0.1 wt.% the WSD was 2.13 mm, compared to 2.50 mm for the base oil. As a reference, the previously-obtained value of P oz for distilled water is 810 N [46]; for commercially-formulated lubricants of oil-based synthetic, water-based semi-synthetic, and grease, these values are 2933 N, 3300 N, and 7200 N, respectively [33]. Therefore, the results obtained by the sunflower nanolubricants are comparable and in some cases superior to those obtained by commercial oil-based and water-based lubricants.…”

Section: Extreme Pressure Propertiesmentioning

confidence: 63%

“…Lubricants 2022, 10, x FOR PEER REVIEW 11 of 18 synthetic, and grease, these values are 2933 N, 3300 N, and 7200 N, respectively [33]. Therefore, the results obtained by the sunflower nanolubricants are comparable and in some cases superior to those obtained by commercial oil-based and water-based lubricants.…”

Section: Extreme Pressure Propertiesmentioning

confidence: 76%

“…For comparison, the reported poz values of distilled water, RzR rapeseed refined oil, and synthetic oil PAO8 are 260 MPa [46], 230 MPa, and 225 MPa [47], respectively. Additionally, the poz values of commercially-formulated lubricants of an oil-based synthetic, water-based semi-synthetic, and grease were 140 MPa, 210 MPa, and 407 MPa, respectively [33]. synthetic, and grease, these values are 2933 N, 3300 N, and 7200 N, respectively [33].…”

Section: Extreme Pressure Propertiesmentioning

confidence: 99%

“…Additionally, the poz values of commercially-formulated lubricants of an oil-based synthetic, water-based semi-synthetic, and grease were 140 MPa, 210 MPa, and 407 MPa, respectively [33]. synthetic, and grease, these values are 2933 N, 3300 N, and 7200 N, respectively [33]. Therefore, the results obtained by the sunflower nanolubricants are comparable and in some cases superior to those obtained by commercial oil-based and water-based lubricants.…”

Section: Extreme Pressure Propertiesmentioning

confidence: 99%

“…Therefore, HNTs have been explored as "green" additives [30,31]. Claybased nano-additives have proven beneficial when added to water-based, oil-based, and polymeric lubricants to improve tribological properties, mainly friction and wear [32,33]. However, few studies with vegetable oils reinforced with HNTs can be found in the literature.…”

Section: Introductionmentioning

confidence: 99%

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Lubrication Performance of Sunflower Oil Reinforced with Halloysite Clay Nanotubes (HNT) as Lubricant Additives

et al. 2022

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This study evaluates the tribological performance of nanolubricants of a vegetable oil (sunflower oil) reinforced with different concentrations of environmentally-friendly nanoparticles of halloysite clay nanotubes (HNTs). Tribological characterization was performed under different conditions to determine its effect on the nanolubricants’ performance and optimal HNT concentration. The tribological performances under low and high contact pressures were analyzed with a block-on-ring tribometer following the ASTM G-077-05 standard procedure. The extreme pressure (EP) properties of the nanolubricants were determined with a T-02 four-ball tribotester according to the ITeE-PIB Polish method for testing lubricants under scuffing conditions. In addition, the lubrication performance of the newly-developed vegetable oil-based nanolubricants was evaluated in an industrial-type application through a tapping torque test. The results indicated that at a low contact pressure 1.5 wt.% HNTs/sunflower oil provided the best tribological behavior by decreasing the coefficient of friction (COF) and wear volume loss by 29 and 70%, respectively. For high contact pressures, 0.05 wt.% HNTs lowered COF and wear by 55% and 56%, respectively. The load-carrying capacity increased by 141% with 0.10 wt.% HNTs compared to the sunflower oil. A high tapping torque efficiency was obtained with HNTs that can prolong tool life in the machining process. Therefore, this study suggests that HNTs/sunflower oil could be used as green lubricants for industrial applications.

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Section: Extreme Pressure Propertiesmentioning

confidence: 63%

Section: Extreme Pressure Propertiesmentioning

confidence: 76%

Section: Extreme Pressure Propertiesmentioning

confidence: 99%

Section: Extreme Pressure Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Lubrication Performance of Sunflower Oil Reinforced with Halloysite Clay Nanotubes (HNT) as Lubricant Additives

et al. 2022

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Construction of core–shell‐structured halloysite nanotubes with TiO₂ nanoparticles for ultra‐high‐molecular‐weight polyethylene (UHMWPE) nanocomposites with improved wear resistance

Wu,

Tang,

et al. 2024

Polymer Composites

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A hybrid of halloysite nanotubes decorated with titanium dioxide nanoparticles (HNTs@TiO2) was synthesized by the sol–gel method and then mixed with ultra‐high molecular polyethylene (UHMWPE) by melt compounding to enhance its wear resistance properties. The incorporation of HNTs@TiO2 increased the crystallinity as well as the hardness of UHMWPE nanocomposites, which benefited less prone to plastic deformation during the friction process. In addition, the UHMWPE/HNTs@TiO2 maintained a high ductility character with a slight decrease in tensile strength compared to pure UHMWPE. With the addition of 3 wt% HNTs@TiO2, the UHMWPE nanocomposite achieved a remarkably low friction coefficient of 0.073 and a reduced wear rate of 6.67 × 10−6 mm3/N·m. These values represented a 32.4% decrease in friction coefficient and a 43.9% decrease in wear rate compared to pure UHMWPE. The improvement in wear resistance was due to the dislodged TiO2 and HNTs had good synergistic rolling effects at the counterface. Furthermore, the wear scan morphology observation revealed that the transferred HNTs@TiO2‐based materials could help to improve the quality of the tribofilms, which alleviated the abrasive wear from the metallic counterpart. This work offers a feasible way to enhance the wear resistance of UHMWPE nanocomposite without sacrificing the high ductility for expanding its engineering applications.Highlights TiO2‐decorated halloysite nanotubes were synthesized by the sol–gel method. The addition of HNTs@TiO2 maintained the high ductility character of UHMWPE. The UHMWPE composite with 3 wt% HNTs@TiO2 had the best wear resistance.

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Nanomaterials for lubricating oil application: A review

Duan

2023

Friction

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Friction and wear are ubiquitous, from nano-electro-mechanical systems in biomedicine to large-scale integrated electric propulsion in aircraft carriers. Applications of nanomaterials as lubricating oil additives have achieved great advances, which are of great significance to control friction and wear. This review focuses on the applications of nanomaterials in lubricating oil and comprehensively compares their tribological characteristics as lubricating oil additives. Statistical analysis of tribology data is provided and discussed accordingly; moreover, the interaction between nanomaterials and sliding surface, lubricating oil, other additives, and synergistic lubrication in nanocomposites are systematically elaborated. Finally, suggestions for future research on nanomaterials as lubricating oil additives are proposed. Hence, this review will promote a better fundamental understanding of nanomaterials for lubricating oil application and help to achieve the superior design of nanoadditives with outstanding tribological performances.

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A comparison of tribological properties of nanolubricants containing carbon nanotori and additional additives

Cited by 9 publications

References 43 publications

Lubrication Performance of Sunflower Oil Reinforced with Halloysite Clay Nanotubes (HNT) as Lubricant Additives

Lubrication Performance of Sunflower Oil Reinforced with Halloysite Clay Nanotubes (HNT) as Lubricant Additives

Construction of core–shell‐structured halloysite nanotubes with TiO₂ nanoparticles for ultra‐high‐molecular‐weight polyethylene (UHMWPE) nanocomposites with improved wear resistance

Nanomaterials for lubricating oil application: A review

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A comparison of tribological properties of nanolubricants containing carbon nanotori and additional additives

Cited by 9 publications

References 43 publications

Lubrication Performance of Sunflower Oil Reinforced with Halloysite Clay Nanotubes (HNT) as Lubricant Additives

Lubrication Performance of Sunflower Oil Reinforced with Halloysite Clay Nanotubes (HNT) as Lubricant Additives

Construction of core–shell‐structured halloysite nanotubes with TiO2 nanoparticles for ultra‐high‐molecular‐weight polyethylene (UHMWPE) nanocomposites with improved wear resistance

Nanomaterials for lubricating oil application: A review

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Construction of core–shell‐structured halloysite nanotubes with TiO₂ nanoparticles for ultra‐high‐molecular‐weight polyethylene (UHMWPE) nanocomposites with improved wear resistance