Study on the tribological properties of diamond and SiC interactions using atomic scale numerical simulations

Gou, Ruyi; Luo, Xun; Chen, Jingjing; Kang, Chenchen; Wang, Xinghao; Lei, Zhongqing

doi:10.1016/j.triboint.2022.108093

Cited by 19 publications

(7 citation statements)

References 40 publications

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“…F f is known to be correlated with the local equivalent strain. The larger the equivalent strain, which means the more pronounced plastic deformable of the workpiece, the greater the required F f . Therefore, the average friction force rises and falls in the pre-friction period.…”

Section: Resultsmentioning

confidence: 99%

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: Resultsmentioning

confidence: 99%

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 distance between the SiC ball and the diamond body surface is 10 Å, and the specific parameters are shown in table 1. The model parameters were referenced from previously published literature [31,32]. It is important to note that this article primarily focuses on the wear of diamond surfaces, therefore neglecting the wear of SiC spheres.…”

Section: Simulation Model and Simulation Setupmentioning

confidence: 99%

“…In simulations at different indentation depths, the friction coefficient, horizontal force, and normal force are important parameters, with the friction coefficient being a crucial factor in testing friction performance [31]. Therefore, the horizontal force (fx) and normal force (fz) were calculated separately during the indentation and sliding processes at different indentation depths and plotted in figures 9 and 10.…”

Section: Indentation Depth and Its Effectsmentioning

confidence: 99%

“…With the increasing maturity of SiC technology, it has important applications in industrial manufacturing, defense equipment, and civilian products. Using silicon carbide as a indenter to simulate the friction and wear process of diamond is representative, and related research has been conducted previously [31][32][33]. However, these studies have shown that hard SiC particles can affect the surface of diamond, but they do not specifically explain the main influencing factors of diamond wear by hard SiC particles under different relative motions.…”

Section: Introductionmentioning

confidence: 99%

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Exploring the evolution mechanisms of indentation and scratching on diamond structural transformation based on molecular dynamics

Tong,

Yang,

Liu

et al. 2024

Modelling Simul. Mater. Sci. Eng.

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Diamond, possessing high hardness and chemical stability, finds wide-ranging applications across various industries. However, during the friction process, a graphitization phenomenon may occur, which changes the mechanical properties of the diamond. In this study, molecular dynamics simulation was performed using SiC ball to investigate the influence of indentation depth and temperature on the graphitization transition of the diamond surface. The results showed that the dominant factor affecting the sp2 hybridization ratio during the indentation process was stress, while the temperature was the dominant factor during sliding. The results of this study can be used to understand the friction and wear behavior of diamonds and SiC ball and provide theoretical references for the industrial application of diamonds.

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“…Usually, a thin oil film will be formed on the sliding surface due to the presence of base oil. 40,41 Base oil can reduce the friction and wear phenomena during the running-in stage. To further determine the friction and lubrication mechanism of PDC under different base oils, the minimum film thickness formula 6 is used to explain.…”

Section: Friction and Lubrication Mechanism Of Pdc Under Different Ba...mentioning

confidence: 99%

Effect of different base oils on the friction behaviour of polycrystalline diamond compact

Gou,

Chen,

Luo

2024

Lubrication Science

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This study analysed and discussed the friction and wear properties, as well as the interface evolution behaviour of polycrystalline diamond compact (PDC) under various base oils, through conducting friction experiments on PDC/Si3N4 with different base oils. The friction and lubrication mechanism of PDC under different base oils were examined using scanning electron microscopy (SEM), x‐ray energy dispersive spectrometry (EDS), three‐dimensional white light interferometry, and Raman spectroscopy. The results of the study demonstrated that PDC exhibited the best friction and wear performance when lubricated with synthetic oil PAO, followed by castor oil. The inferior performance of paraffin oil can be attributed to its low viscosity, resulting in a lower presence of ions capable of passivating the carbon dangling bond. Consequently, paraffin oil displayed inadequate oxidation stability and increased susceptibility to oil film destruction, ultimately leading to suboptimal friction and wear characteristics. Overall, this study provides valuable insights for industrial applications, aiding in the selection of appropriate base oils as cutting fluids for PDC cutting tools and enhancing the friction and wear properties of PDC.

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Study on the tribological properties of diamond and SiC interactions using atomic scale numerical simulations

Cited by 19 publications

References 40 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

Exploring the evolution mechanisms of indentation and scratching on diamond structural transformation based on molecular dynamics

Effect of different base oils on the friction behaviour of polycrystalline diamond compact

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