Understanding the Influence of the Magnetic Field, Particle Size, and Concentration on the Tribological Performance of Superparananolubricants

Guedes, Ana Emília Diniz Silva; Mello, Valdicleide Silva e; Bohn, F.; Alves, Salete Martins

doi:10.1080/10402004.2021.1880678

Cited by 3 publications

(1 citation statement)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When a magnetic field is applied, each particle experiences magnetic body force which causes it to move. When all the particles start moving, they cause the colloidal homogeneous suspension to move en masse, one of the novel ferrofluid lubricant is superparamagnetic nanolubricants [1]. Owing to these features, ferro-fluids are useful in many applications [2][3].…”

Section: Introductionmentioning

confidence: 99%

A Study of Finite Hydrodynamic Slider Bearings Lubricated With Ferrofluids

Nada

2023

Engineering Research Journal - Faculty of Engineering (Shoubra)

View full text Add to dashboard Cite

An effort has been made to study and analyze the performance of a finite hydrodynamic slider bearing lubricated by Ferro fluid. The modified Reynolds' equation, pressure differential equation, that contains the magnetic effect of the ferro-lubricant is derived and solved numerically and the results of the overall static characteristics namely; pressures, load-carrying capacity, pressure center, friction force and friction coefficient are determined and presented in this study. Also, the flow rates in the bearing are evaluated. The study indicates that the wedge parameter has an optimum value (about 1.25) which gives higher load capacity, lower friction force and lower friction coefficient. Also, the width to length ratio has an important role in the performance of finite bearings until value equal 4, while the wider bearing has non-significant effect on the performance. It is also shown that the magnetic effect of the ferro-lubricant has significant improving effect on the overall static characteristics of the slider bearing.

show abstract

Section: Introductionmentioning

confidence: 99%

A Study of Finite Hydrodynamic Slider Bearings Lubricated With Ferrofluids

Nada

2023

Engineering Research Journal - Faculty of Engineering (Shoubra)

View full text Add to dashboard Cite

show abstract

Research progresses of nanomaterials as lubricant additives

Jiang,

Sun,

Liu

et al. 2024

Friction

View full text Add to dashboard Cite

Friction and wear are unavoidable in mechanical movement. The use of lubricants with nano-additives can effectively reduce friction and wear, which is of great significance to saving energy and protecting the environment. At present, great progress has been made in the scientific research and industrial application of nano-additives for lubricants. This paper mainly introduces the types of nano-additives for lubricants (such as carbon nanomaterials, nano-metals, nano-oxides, sulfides, complexes, polymers, etc.), the tribological properties of lubricants with different components of nano-additives, and the lubrication mechanisms of the nano-additives (including tribofilm formation, rolling ball bearing effect, repairing effect, polishing effect, and synergistic effect). It also deals with the dispersion of nano-additives in lubricants and the influences of their particle size and microstructure on the tribological properties of lubricants. This review outlines the performance requirements of nano-additives in different lubrication states, discusses the use of nano-additives in challenging working conditions, and identifies various industrial oil nano-additives with reference to the appropriate options in diverse working environments. Furthermore, the existing problems of nano-additives and their application prospects are summarized. This review, hopefully, would help to shed light on the design and synthesis of novel high-performance nano-additives and promote their application in engineering.

show abstract

Synthesis and tribological assessment of oil-based nanolubricants blended with nano-zeolite for steel–steel contact

Zhu,

Sun,

2024

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

This study aims to synthesize zeolite with nano-sized morphology and investigate the tribological performance of nano-zeolite as a lubricating additive dispersed in an oil-based lubricant. Tribological tests were performed and morphologies of wear tracks were characterized to investigate the friction reduction and anti-wear properties of zeolite, respectively. The lubrication mechanism was discussed by illustrating the effects of concentration and particle size on the tribological behavior of zeolite. The optimal concentration of nano-zeolite to improve the tribological performance of the base oil was 2 wt.%, which exhibited a friction reduction of 34.3%. Zeolite particles with larger diameters showed better dispersion stability but worse lubrication performance, which could be concluded from the decrease in the friction reduction ratio. Moreover, the friction coefficient under the lubrication of zeolite at 200°C was 15.8% lower than that of the pure base oil, demonstrating the thermal stability of zeolite. Notably, the application of zeolite resulted in an increase in wear depth due to the occurrence of the three-body abrasion, while the surface asperities of the counterpart were also smoothed in the meantime. This work demonstrates the potential of nano-zeolite to enhance the tribological performance of oil-based lubricants in industrial applications, which could be attributed to their porous structure, lipophilicity, and chemical–thermal stability.

show abstract

Understanding the Influence of the Magnetic Field, Particle Size, and Concentration on the Tribological Performance of Superparananolubricants

Cited by 3 publications

References 33 publications

A Study of Finite Hydrodynamic Slider Bearings Lubricated With Ferrofluids

A Study of Finite Hydrodynamic Slider Bearings Lubricated With Ferrofluids

Research progresses of nanomaterials as lubricant additives

Synthesis and tribological assessment of oil-based nanolubricants blended with nano-zeolite for steel–steel contact

Contact Info

Product

Resources

About