Nanosized Additives to Lubricating Materials

Oganesova, É. Yu.; Lyadov, A. S.; Parenago, O. P.

doi:10.1134/s1070427218100014

Cited by 11 publications

(4 citation statements)

References 103 publications

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“…For example, Kim et al [12] uses ball milling for 10 h to reduce the size of boric acid particles and to suspend them in mineral base oil. By using the nano-structured lamellar boric acid and using the suspension method developed in this study, we were able to reduce this preparation time to less than 1 h. In addition, high suspension duration of our samples (more than 3 months) compared to other nanoparticle suspension studies indicates that these results represent the longest times to keep a nanoparticle suspended in a non-polar media [8][9][10][11]32].…”

Section: Suspension Characterization Of Nba Nanofluid Added Mineral Bmentioning

confidence: 99%

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A simple route to suspend boric acid in non-polar media

Tanrıseven

Gül

Özayman³

2020

SN Appl. Sci.

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It is a very challenging purpose to suspend a nanoparticle in a non-polar medium. In this study, stable nanofluid of nanostructured lamellar boric acid (nBA), which is highly hydrophilic compound (log Kow value is 0.18), to be suspended in non-polar media was successfully prepared. Group III base oil; i.e. mineral base oil, was used for modeling non-polar media. According to characterization examinations, optimal nBA nanofluid adding ratio is found to be 3%. Viscosity analyses were held by Brookfield DV2T® Viscometer. Friction effect of adding the nBA nanofluid into base oil was characterized by a reciprocating tribometer. Stability of nanofluid suspension in base oil was characterized by Turbiscan Tower® instrument. Viscosity of original base oil was decreased by 2.88% at 100 °C, friction coefficient value of base oil was decreased by 2.91%; Turbiscan Stability Index (TSI) values of prepared sample was 2.9. These characterizations showed that boric acid, a highly hydrophobic material, suspended in a non-polar environment with the help of a simple route containing auxiliary chemicals and ultrasonic horn.

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Section: Suspension Characterization Of Nba Nanofluid Added Mineral Bmentioning

confidence: 99%

“…Suspension duration of additive nanoparticles in non-polar mediums is also important. According to the available literature, limited studies have been addressed on stable suspension duration [8][9][10][11]. Researchers have also studied to disperse and suspend boric acid particles of different sizes in different media [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

A simple route to suspend boric acid in non-polar media

Tanrıseven

Gül

Özayman³

2020

SN Appl. Sci.

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“…Many investigations indicate that soft metal particles can act as friction modi ers [2]. Lubrication mechanisms of soft metallic nanoparticles could be explained by the sintering or repair effect, that is to say, the nanoparticles would be compacted on worn surface due to heat and pressure generated during friction process [24]. Although the soft metal has an excellent property in improving anti-wear performance, there are few researches regarding it as the soft shell of core-shell structure additives.…”

Section: Introductionmentioning

confidence: 99%

Tribological Properties of SiO2@Cu and SiO2@MoS2 Core–Shell Microspheres as Lubricant Additives

Gan

et al. 2021

Tribol Lett

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Herein, core-shell structural SiO 2 @Cu and SiO 2 @MoS 2 microspheres were prepared using SiO 2 as hard core, Cu and MoS 2 as shell. As lubricant additives were introduced into base oil (PAO 40), their frictionreduction and wear-resistance were investigated in detail. Comparing with onefold additive (SiO 2 , Cu and MoS 2 ), such core-shell structure additives can improve the tribological behaviors at the Hertz contact stress range of 1.26 ~ 2.72 GPa (SiO 2 @Cu reduces the friction and wear up to 32.47% and 67.86% at 2.72 GPa, respectively). Besides, the tribological properties of SiO 2 @Cu microspheres are superior to that of SiO 2 @MoS 2 (the wear volume was reduced by 48.45% at 2.72 GPa). The excellent tribological behaviors of SiO 2 @Cu microspheres can be ascribed to its structural advantage, the synergistic effect of hard SiO 2 core and Cu shell. The rolling effect of SiO 2 , easy-shearing and self-repairing of Cu shell offer a synergistic lubrication function and form a dense protection lm, thereby contributing to the optimal lubrication performance.

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“…Application of nanotechnology encompasses various fields of science, engineering, biomedical and materials science etc. Numbers of researcher have already presented the applicability of nanoparticles addition to lubricant as an efficient mean for improving the tribological performance of lubricant [4][5][6]. Various studies have presented nanoparticles as a promising additive for improving tribological properties of lubricating oil [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Aluminium Oxide (Al2O3) Nanoparticles Addition into Lubricating Oil on Tribological Performance

Ghalme¹,

Koinkar²,

Bhalerao³

2020

Tribol. Ind.

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Minimizing friction and wear in between mating parts is the main concern in the field of tribological studies. Lubricants with improved tribological properties are continuously explored for minimizing friction and wear. In the present work, an attempt has been made to evaluate the effect of the addition of aluminium oxide (Al2O3) nanoparticles as lubricant additives on the tribological performance of base lubricant oil (SAE10W40) using four-ball tester. Weight in the percentage of Al2O3 nanoparticles was added in base oil and evaluated the effect of additives on wear preventive characteristic and coefficient of friction of base lubricant oil. Integrated Taguchi-Grey relational approach is implemented to obtain the optimum combination of load and % wt. of Al2O3 nanoparticle addition for improving the tribological performance of base lubricant oil. With a load of 250 N and 0.5 wt% of Al2O3 nanoparticles shows an optimum combination for the improved tribological performance of base oil. The wear scar diameter and coefficient of friction found to be reduced by 20.75 % and 22.67 % respectively with the addition of 0.5 wt% of Al2O3 nanoparticles in base lubricant oil. The lubrication performance seems to be improved because of mending effect and ball bearing effect of Al2O3 nanoparticles forming a self-protective film on the friction surface.

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Nanosized Additives to Lubricating Materials

Cited by 11 publications

References 103 publications

A simple route to suspend boric acid in non-polar media

A simple route to suspend boric acid in non-polar media

Tribological Properties of SiO2@Cu and SiO2@MoS2 Core–Shell Microspheres as Lubricant Additives

Effect of Aluminium Oxide (Al2O3) Nanoparticles Addition into Lubricating Oil on Tribological Performance

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