Friction-induced motion evolution of reduced graphene oxide-Al2O3 at contact interface to achieve superior lubrication performance

Wang, Chenglong; Sun, Jianyu; He, Jiaqi; Ge, Chenglin

doi:10.1016/j.apsusc.2022.154479

Cited by 12 publications

(6 citation statements)

References 38 publications

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“…Finally, the boundary layer of the Fe block was subjected to a sliding velocity along the x -direction ( V x = 1.5 Å/ps) under a micro-canonical ensemble ( NVE ). This study references previous studies that considered three different particle radii ( R p = 8, 9, 10 Å) and environments with or without water molecules ( N w = 180) for six simulations, each with a sliding time of 200 ps. , During the sliding simulation, the evolution of the friction behavior was observed by OVITO …”

Section: Methodssupporting

confidence: 56%

“…Since the particles are not only subjected to the force along the x -direction, the silica particles sometimes rotate around other axes. The motion of each group of particles is observed with the help of post-processing software, and the rotation angle around the y -axis is recorded for each group of particles. , For R p = 8 Å, the particles were in compound motion from t = 0 to 80 ps and rotated around the y -axis by a total of 90° (Figure a–c). From the beginning to the end of t = 80 ps, the particles are always in sliding motion (Figure c,d).…”

Section: Resultsmentioning

confidence: 99%

“…This study references previous studies that considered three different particle radii (R p = 8, 9, 10 Å) and environments with or without water molecules (N w = 180) for six simulations, each with a sliding time of 200 ps. 32,33 During the sliding simulation, the evolution of the friction behavior was observed by OVITO. 34 The friction force (F f ) is obtained by counting the sum of the tangential forces on the atoms in the boundary layer of the Fe block and averaging the F f every 500 steps.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

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Probing the Effect of Cuttings Particle Size on the Friction and Wear Mechanism at the Casing Friction Interface: A Molecular Dynamics Study

Zhu,

Wang,

Liu

et al. 2023

Langmuir

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Cuttings particles of different sizes in the drilling fluid are the leading cause of wear at the casing and drill pipe joints, and diamond-like carbon (DLC) films have excellent research potential in reducing tool wear due to their ultra-low friction coefficient and high wear resistance. In this paper, a corresponding molecular dynamics model was developed using LAMMPS to investigate the effect of silica particles of different particle sizes on the friction and wear mechanisms of Fe/DLC friction pairs at the microscale. The results show that small cuttings particles in a dry environment are more likely to cause interface wear between the casing and drill pipe joint, while in a water environment, the opposite is true. The main reason is that small particles in a dry environment have smaller contact areas and greater indentation depth, leading to greater wear at the friction interface. The movement of water molecules in the water environment will promote the composite movement of large particles, thereby exacerbating the wear of the interface. Moreover, the relevant research results at the micro-scale indicate that DLC films can effectively reduce wear, which provides theoretical support for its application in drill pipe joints.

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Section: Methodssupporting

confidence: 56%

Section: Resultsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Probing the Effect of Cuttings Particle Size on the Friction and Wear Mechanism at the Casing Friction Interface: A Molecular Dynamics Study

Zhu,

Wang,

Liu

et al. 2023

Langmuir

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“…The disk lubricated with AO/SDBS has relatively stable CoF, almost three times lower than neat water. This finding is attributed to the role of spherical Al 2 O 3 particles, providing a rolling effect that transforms sliding friction into rolling friction 6 . The AO/TA sample has an average CoF of 0.071, which is slightly lower than AO/SDBS.…”

Section: Resultsmentioning

confidence: 96%

“…Among the numerous nanoparticles explored for water-based nanofluid applications, alumunium oxide (Al 2 O 3 ) nanoparticles is a promising candidate due to their excellent thermal conductivity, tribological properties, corrosion resistance, and low cost compared to other advanced nanoparticles 3 – 5 . Wang et al reported that water-based Al 2 O 3 nanofluid could reduce the wear rate by ~ 42% compared to base fluid 6 . It has also been reported that Al 2 O 3 can significantly improve the corrosion inhibition of brass.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Stability, Superior Anti-Corrosive, and Tribological Performance of Al2O3 Water-based Nanofluid Lubricants with Tannic Acid and Carboxymethyl Cellulose over SDBS as Surfactant

Rahmadiawan,

Shi

2024

Sci Rep

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In this research work, the stability, tribological, and corrosion properties of a water-based Al2O3 nanofluid (0.5 wt%) formulated with tannin acid (TA) and carboxymethyl cellulose (CMC) as dispersants or surfactants were investigated. For comparative purposes, sodium dodecylbenzene sulfonate (SDBS) was also incorporated. The stability of the nanofluid was assessed through zeta potential measurements and photo-capturing, revealing the effectiveness of TA and CMC in preventing nanoparticle agglomeration. Tribological properties were examined using a pin-on-disk apparatus, highlighting the tribofilm of Al2O3 that enhanced lubricating properties of the nanofluid by the SEM, resulting in reduced friction and wear of the contacting surfaces. Sample with the addition of both TA and CMC exhibited the best tribological performance, with a ~ 20% reduction in the friction coefficient and a 59% improvement in wear rate compared to neat nanofluid without TA and CMC. Additionally, the corrosion resistance of the nanofluids were evaluated via weight loss and electrochemical impedance spectroscopy. The nanofluid sample containing both TA and CMC exhibited the lowest corrosion rate, with 97.6% improvement compared to sample without them. This study provides valuable insights into the potential applications of TA and CMC-based Al2O3 nanofluids as effective and environmentally friendly solutions for coolant or lubrication in cutting processes.

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Self-assembled multilayer WS2/GO films on amorphous silicon coating for enhancing the lubricating properties

Zeng

Ning

Pang

et al. 2023

Applied Surface Science

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Friction-induced motion evolution of reduced graphene oxide-Al2O3 at contact interface to achieve superior lubrication performance

Cited by 12 publications

References 38 publications

Probing the Effect of Cuttings Particle Size on the Friction and Wear Mechanism at the Casing Friction Interface: A Molecular Dynamics Study

Probing the Effect of Cuttings Particle Size on the Friction and Wear Mechanism at the Casing Friction Interface: A Molecular Dynamics Study

Enhanced Stability, Superior Anti-Corrosive, and Tribological Performance of Al2O3 Water-based Nanofluid Lubricants with Tannic Acid and Carboxymethyl Cellulose over SDBS as Surfactant

Self-assembled multilayer WS2/GO films on amorphous silicon coating for enhancing the lubricating properties

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