The influence of nano additives on tribological properties of lubricant oil

Yunusov, F.A.; Бреки, А. Д.; Vasilyeva, E. S.; Толочко, О. В.

doi:10.1016/j.matpr.2020.01.447

Cited by 11 publications

(11 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These observations indicate that both TPW- and OLC-dispersed BO samples with optimal concentrations of TPW and OLC can reduce friction, wear, and related losses. Similar observations have been reported w.r.t reduction in WSD in the case of cycle tire tube-derived C-soot as an additive in dewaxed N500 BO, nanodiamond-derived C-onions as an additive in PAO oil, , detonation mixture-derived C-onions as an additive in SN150, and fullerene soot as an additive in mineral oil (MC-20) . The importance of optimal concentration of additives for securing better wear characteristics has also been reported .…”

Section: Resultssupporting

confidence: 78%

“…53 The importance of optimal concentration of additives for securing better wear characteristics has also been reported. 53 C-soot samples derived from bio-diesel and diesel vehicle exhausts have also helped reduce wear when used as an additive in lubricating media. 35,37 From the above-presented experimental observations and related discussion, adding the TPW particles and OLC to BO improved the rheological properties of BO and also effectively helped in reducing friction and wear.…”

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sustainable Kilogram-Scale Conversion of Tire Pyrolysis Waste into Nanosized Onion-like Carbons with Extraordinary Lubricant-Additive Properties

Ravikiran,

Padya,

Junaid

et al. 2023

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Tire pyrolysis waste (TPW) is converted into highly crystalline and nanosized onion-like carbons (OLCs) on a kilogram scale using an easy and controlled heat treatment. An OLC-dispersed additive-free group-II N500 base oil (BO) sample exhibited increased density, lower viscosity, and reduced internal fluid shear stress compared to BO. The nanoscale of OLC induced a change in the dispersing medium's conformation and free volume, resulting in a non-Einstein-like decrease of viscosity. When used as a lubricant in the four-ball wear test, the OLC-added BO sample caused nanoscale sliding and rolling effects at the points of contact, considerably reducing the coefficient of friction and wear. Surprisingly, TPW also showed similar behavior to OLC. Here, it is elucidated that OLC and TPW are anti-friction and anti-wear nanoadditives in lubricants that reduce friction and wear substantially. TPW could also be used as a low-cost additive in lubricants with no stringent restrictions on the presence of minor impurities and in several other applications. This is expected to ease the economics involved and facilitate the liberal use of OLC in various applications, as discussed in brief in this work.

show abstract

Section: Resultssupporting

confidence: 78%

Section: ■ Introductionmentioning

confidence: 99%

Sustainable Kilogram-Scale Conversion of Tire Pyrolysis Waste into Nanosized Onion-like Carbons with Extraordinary Lubricant-Additive Properties

Ravikiran,

Padya,

Junaid

et al. 2023

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…Different from aforementioned work of Lee et al [127], Ku et al [128] indicated that an enhanced load-bearing capacity of the oil by C 60 was considered to be the direct reason for improvements of antifriction and antiwear abilities. Similarly, the addition of up to 0.5 wt%-fullerene soot achieved a decrease (∼30%) in friction force after tests [129]. This improvement in the ultimate load-bearing capacity of lubricating layer caused by employing fullerene was helpful in improving tribological behaviors of base oil.…”

Section: Additives For Lubricantsmentioning

confidence: 80%

Recent Progress on Carbon Nanomaterials for Resisting the Wear Damages

Yin

Chen

Zhang

et al. 2022

Journal of Nanomaterials

View full text Add to dashboard Cite

In recent years, carbon nanomaterials such as fullerenes, carbon nanotubes, graphene, and nanodiamonds have been regarded as versatile triboproducts such as copper coins for various engineering/commerce-scaled applications. Their large-scale usages as ideal reinforcements for the key tribomaterials are motivated by their huge interfacial areas, unique physical/chemical characteristics, as well as multiple scale load-transferring mechanisms. Numerous investigators have kept on studying the possibilities of using carbon nanomaterials as solid lubricants, lubricating additives, or the superlubricated push hand. This review offers a comprehensive discussion of up-to-date survey in carbon nanomaterials for achieving the low friction and high wear resistant in the forms of coatings, bulk materials, lubricants; or even superlubric state in the tribosystems from nanoscale to macroscale. Finally, important conclusions, foreseeable challenges, and future outlooks for carbon nanomaterials are highlighted as the concluding remarks that are needed to impulse nanotechnology maturation and developments of tribological fields such as copper coin protections.

show abstract

“…Further development of various nanomaterial technologies is presented in research [9]. The authors examined both solid lubricants with fullerene additives, including graphene (G), fullerene (C60), and carbon nanotubes, as well as liquid lubricants.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Development of a rheological model of stress relaxation in the structure of an oil film on the friction surface with fullerene additives

Suska

Biekirov

Levkin

2021

EEJET

View full text Add to dashboard Cite

A rheological model of stress relaxation in a thin lubricant film, which is formed on the friction surface under the influence of the force field of the friction surface in the presence of fullerene compositions in lubricants, was developed. Analysis of the model made it possible to establish that the existence of elastic or viscous properties in surface structures depends on the ratio of two parameters. This is the time of stress relaxation in the structure on spots of actual contact and the duration of stress action on these spots, which is termed the lifetime of an actual contact spot. It was shown that an increase in the sliding rate reduces the time of relaxation of stresses in the surface structure. This is due to the destruction of aggregates in the structure of gel and the appearance of rotational movements of separate units ‒ flocs. An increase in the load on the tribosystem significantly increases the value of relaxation time. This is due to squeezing the viscous component out of the structure of a surface film. It was established that if the relaxation time exceeds the duration of actions of stresses on actual contact spots, the structure of a surface film behaves like an elastic solid. Conversely, if relaxation time becomes shorter than the duration of stress action, the film behaves like a viscous medium. Theoretically, it was shown that in the range of sliding and loading rates, when a film behaves like an elastic solid, a decrease in stresses on actual contact spots does not exceed the values of 1.1‒22.8 %. This property provides the bearing capacity of a film. The development of the model will make it possible to simulate elastic and viscous properties of "stitched" structures and substantiate the rational concentrations of additives to lubricants, as well as the ranges of their use.

show abstract

The influence of nano additives on tribological properties of lubricant oil

Cited by 11 publications

References 12 publications

Sustainable Kilogram-Scale Conversion of Tire Pyrolysis Waste into Nanosized Onion-like Carbons with Extraordinary Lubricant-Additive Properties

Sustainable Kilogram-Scale Conversion of Tire Pyrolysis Waste into Nanosized Onion-like Carbons with Extraordinary Lubricant-Additive Properties

Recent Progress on Carbon Nanomaterials for Resisting the Wear Damages

Development of a rheological model of stress relaxation in the structure of an oil film on the friction surface with fullerene additives

Contact Info

Product

Resources

About