Tribological Characteristics of Aqueous Graphene Oxide, Graphitic Carbon Nitride, and Their Mixed Suspensions

He, Anshun; Huang, Shuiquan; Yun, Jung‐Ho; Jiang, Zhengyi; Stokes, Jason R.; Jiao, Sihai; Wang, Luyao; Huang, Han

doi:10.1007/s11249-018-0992-3

Cited by 35 publications

(22 citation statements)

References 37 publications

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“…To date, a large number of nanomaterials used as additives to lubricating oils, in particular, carbon materials [23,24], carbon nanotubes [25], graphene oxide [26][27][28], boron nitrides [29,30], and silicon oxide [31], have been obtained. However, the most extensive studies have been carried out with metal-containing nanomaterials, whose NPs contain, e.g., metals, their oxides, and sulfides [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Metal-containing nanomaterials as lubricant additives: State-of-the-art and future development

2019

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This review focuses on the effect of metal-containing nanomaterials on tribological performance in oil lubrication. The basic data on nanolubricants based on nanoparticles of metals, metal oxides, metal sulfides, nanocomposities, and rare-earth compounds are generalized. The influence of nanoparticle size, morphology, surface functionalization, and concentration on friction and wear is analyzed. The lubrication mechanisms of nanolubricants are discussed. The problems and prospects for the development of metal-containing nanomaterials as lubricant additives are considered. The bibliography includes articles published during the last five years. Friction 7(2): 93-116 (2019) | https://mc03.manuscriptcentral.com/friction Friction 7(2): 93-116 (2019) 97 |www.Springer.com/journal/40544 | Friction http://friction.tsinghuajournals.comFriction 7(2): 93-116 (2019)

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Section: Introductionmentioning

confidence: 99%

Metal-containing nanomaterials as lubricant additives: State-of-the-art and future development

2019

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“…The extremely low friction was ascribed to efficient lubrication between hydrated layers [14]. Others studied nanostructured materials, such as metals, metal oxides and graphene, as additives to water in this context [15][16][17][18][19][20]. However, in these cases the application of the lubricant was limited by their poor dispersibility.…”

Section: Introductionmentioning

confidence: 99%

“…However, in these cases the application of the lubricant was limited by their poor dispersibility. Efforts were made to reduce their high surface activity and avoid aggregation [20]. Fluorinated graphene was functionalized by urea to improve surface wettability and to ensure a homogenous dispersion of the additive in water.…”

Section: Introductionmentioning

confidence: 99%

Macroscopic Friction Studies of Alkylglucopyranosides as Additives for Water-Based Lubricants

et al. 2020

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Water-based lubricants might become an interesting alternative to conventional oil-based lubricants and help to reduce wear as well as improve the energy efficiency of transport processes. Since pure water is generally a rather poor lubricant due to its low viscosity and corrosiveness, it must be tribologically optimized with suitable additives. Here, we study the friction behavior of alkyl glucopyranosides (AGPs) with varying lengths of the alkyl chain. Sliding experiments show that a significant reduction in the coefficient of friction compared to that of pure water is observed. The extent of friction reduction depends strongly on the concentration and on the shearing conditions. It is assumed that the low coefficients of friction are due to the ability of AGPs to form liquid crystalline phases with an ordered structure in the friction gap. Furthermore, the interaction of the AGPs with the surface forms a wear protection layer (boundary lubrication). The friction properties of the water-based system are compared to those of a conventional, mineral oil-based lubricant.

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“…In this regard, a type of environment-friendly lubricant with excellent lubricating performance is urgently needed to substitute conventional oil-containing lubricants. In recent years, the research trend on water-based lubricants added with nanoparticles (NPs) is continuously ascending due to their excellent tribological properties and promising potential in hot steel rolling, even though the relevant reports are still scarce [8,[16][17][18][19][20][21][22][23]. For instance, Bao et al [8] carried out hot steel rolling tests at temperatures of 750-950 • C using water-based lubricants containing SiO 2 NPs, and found that the use of as-prepared lubricants with the addition of 0.5 wt% nano-SiO 2 resulted in improved surface morphology, reduced oxide scale thickness, and refined grain size, compared to that of the base lubricant.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation and Lubrication Mechanism of Water-Based Nanolubricants Containing Nano-TiO2 in Hot Steel Rolling

Zhao

Luo

et al. 2018

Lubricants

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Hot rolling tests of a low-alloy steel were conducted at a rolling temperature of 850 • C under different lubrication conditions, including benchmarks (dry condition and water) and water-based nanolubricants containing different concentrations of nano-TiO 2 from 1.0 to 8.0 wt%. The effects of nanolubricants on rolling force, surface roughness, thickness of oxide scale, and microstructure were systematically investigated through varying nano-TiO 2 concentrations. The results show that the application of nanolubricants can decrease the rolling force, surface roughness and oxide scale thickness of rolled steels, and refine ferrite grains. In particular, the nanolubricant containing an optimal concentration (4.0 wt%) of nano-TiO 2 demonstrates the best lubrication performance, owing to the synergistic effect of lubricating film, rolling, polishing, and mending generated by nano-TiO 2 .

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Tribological Characteristics of Aqueous Graphene Oxide, Graphitic Carbon Nitride, and Their Mixed Suspensions

Cited by 35 publications

References 37 publications

Metal-containing nanomaterials as lubricant additives: State-of-the-art and future development

Metal-containing nanomaterials as lubricant additives: State-of-the-art and future development

Macroscopic Friction Studies of Alkylglucopyranosides as Additives for Water-Based Lubricants

Performance Evaluation and Lubrication Mechanism of Water-Based Nanolubricants Containing Nano-TiO2 in Hot Steel Rolling

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