A Review of Friction Performance of Lubricants with Nano Additives

Waqas, Muhammad; Zahid, Rehan; Bhutta, Muhammad Usman; Khan, Zulfiqar Ahmad; Saeed, Adil

doi:10.3390/ma14216310

Cited by 59 publications

(38 citation statements)

References 89 publications

(119 reference statements)

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“…It can be observed that up to 2 vol % NA-containing inks (A50N1D2 and A50N2D2) show lower η than the NA-free (A50N0D2) and higher NA-retaining (3 and 4 vol %) inks (Figure c). The inclusion of NPs in a suspension at a certain concentration exhibits a lesser coefficient of friction and improved tribological properties than the NP-free suspension. , Spherical or quasi-spherical geometry NPs form a protective layer between the interacting MA surfaces where NAs produce a nano ball-bearing effect that modifies the sliding friction into rolling friction and minimizes wear-loss (Figure d). , The NPs act as a nanolubricant that helps reduce the η of ink. However, a high volume of NAs creates a jam between the contact surfaces of MAs and impedes the motion of particles attributed to a high η in ink.…”

Section: Results and Discussionmentioning

confidence: 99%

“…The inclusion of NPs in a suspension at a certain concentration exhibits a lesser coefficient of friction and improved tribological properties than the NP-free suspension. 32,33 Spherical or quasi-spherical geometry NPs form a protective layer between the interacting MA surfaces where NAs produce a nano ball-bearing effect that modifies the sliding friction into rolling friction and minimizes wear-loss (Figure 4d). 34,35 The NPs act as a nanolubricant that helps reduce the η of ink.…”

Section: Rheological Behaviors Of Inksmentioning

confidence: 99%

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Incorporating Nanoparticles in Alumina Ink for Improved Solid-Loading and Sinterability of Extrusion-Based 3D Printing

Hossain

Gao

Park

et al. 2022

ACS Appl. Nano Mater.

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Nanoparticles (NPs) show many unique and advanced behaviors compared to micron-sized particles and above. The effect of NPs on the rheological and sintering nature of direct ink writing (DIW) [extrusion-based three-dimensional (3D) printing] inks has been comprehensively studied. The inks were first formulated through particle size grading of microalumina and nanoalumina (NA) with aqueous-based solvents, and it was found that the solid volume in ink increases up to a certain volume of NA (2%) inclusion due to the change in friction mechanism between particles. Meanwhile, the presence of high volumes of NA (≥3 vol %) reduces solid-loading in ink due to agglomeration of NPs for printable rheology. Second, different NA (0–5 vol %)-containing optimized rheological inks were printed by DIW and sintered at temperatures of 1300–1600 °C. Higher solid-loading ink retaining 2 vol % NA shows low volume shrinkage, and 5 vol % NA-containing ink reaches 97% density at temperatures as low as 100 °C than without NA ink. Including NPs in the ceramic 3D printing technology decreases the use of organic contents (reduce greenhouse effect) and also effectively reduces the shrinkage and fabricates a dense printed structure by eliminating binder-burnout generated pores at a low temperature (energy conservation).

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Section: Results and Discussionmentioning

confidence: 99%

Section: Rheological Behaviors Of Inksmentioning

confidence: 99%

Incorporating Nanoparticles in Alumina Ink for Improved Solid-Loading and Sinterability of Extrusion-Based 3D Printing

Hossain

Gao

Park

et al. 2022

ACS Appl. Nano Mater.

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“…With the development of nanoscience and nanotechnology, nanoscale-based lubricant additives have become a key research area in tribology. Frequently used nanoscale lubricant additives are metals, metal oxides, metal sulfides, metal borates, polymers, and carbon-based nanomaterials [18][19][20]. However, nanoscale carbon materials have become increasingly popular in the lubricant additive community due to their ecologically approachable nature, exceptional self-lubricating behavior, good chemical and high thermal stability and outstanding mechanical properties with respect to bulk carbon materials [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Development of Doped Carbon Quantum Dot-Based Nanomaterials for Lubricant Additive Applications

2022

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The development of advanced lubricants is essential for the pursuit of energy efficiency and sustainable development. In order to improve the properties of lubricating fluids, high-performance lubricating additives are required. In recent research studies, carbon nanomaterials such as fullerenes, carbon nanotubes, and graphene have been examined as lubricating additives to water or oil. Lubricating oils are well known for the presence of additives, especially friction-reducers and anti-wear additives. As part of this work, we have studied the advancement in the research and development of carbon dot (CD)-based lubricant additives by presenting a number of several applications of CD-based additives. We have also highlighted the friction-reducing properties and anti-wear properties of CDs and their lubrication mechanism along with some challenges and future perspectives of CDs as an additive. CDs are carbon nanomaterials that are synthesized from single-atom-thick sheets containing a large number of oxygen-containing functional groups; they have gained increasing attention as friction-reducing and antiwear additives. CDs have gradually been revealed to have exceptional tribological properties, particularly acting as additives to lubricating base oils. In our final section, we discuss the main challenges, future research directions, and a number of suggestions for a complete functionalized or hybrid doped CD-based material.

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“…Lubrication oils, plastic greases and solid lubricants can be distinguished. Currently, there is a tendency to replace lubricating oils and plastic greases with solid lubricants [ 6 , 7 , 8 , 9 , 10 ]. Oils and plastic greases can pose a serious problem in some applications, for example, at high temperatures, when they may evaporate.…”

Section: Introductionmentioning

confidence: 99%

Tribological Properties of Cu-MoS2-WS2-Ag-CNT Sintered Composite Materials

et al. 2022

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In this work, in order to produce Cu-MoS2-WS2-Ag-CNT self-lubricating materials, powder metallurgy was used. Several different compositions containing single solid lubricant MoS2, WS2, Ag and CNTs as well as multi-component lubricants in the copper matrix were prepared. Friction and wear tests were carried out using the pin-on-disc method at room temperature. Light microscopy (LM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) were used to characterize the wear mechanism of sintered materials. The tribofilm on the worn surfaces of sintered materials and counter-specimens was observed. The influence of single solid lubricants and the synergistic interaction of two, three or four solid lubricants on tribological properties of sintered composite materials were determined.

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A Review of Friction Performance of Lubricants with Nano Additives

Cited by 59 publications

References 89 publications

Incorporating Nanoparticles in Alumina Ink for Improved Solid-Loading and Sinterability of Extrusion-Based 3D Printing

Incorporating Nanoparticles in Alumina Ink for Improved Solid-Loading and Sinterability of Extrusion-Based 3D Printing

Development of Doped Carbon Quantum Dot-Based Nanomaterials for Lubricant Additive Applications

Tribological Properties of Cu-MoS2-WS2-Ag-CNT Sintered Composite Materials

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