Tribofilm formation mechanism and friction behavior of polycrystalline diamond compact after cobalt leaching added molybdenum disulfide nanoparticles in different base oils

Gou, Ruyi; Chen, Jingjing; Luo, Xun; Li, Kunyao

doi:10.1016/j.ijrmhm.2023.106101

Cited by 10 publications

(6 citation statements)

References 39 publications

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“…The experimental results showed that the addition of nano-MoS 2 improves the friction and wear properties of the experimental materials. Due to the existence of oil lm, a series of physical and chemical reactions will occur in the process of friction sliding in air environment, and a friction protective lm will be formed on the surface of PDC [30]. In this study, AFM can be observed that there is a layer of lm on the surface of PDC after wear.…”

Section: Afm Analysismentioning

confidence: 66%

“…The experiment was carried out for 30 minutes at 150r / min. According to the Hertz contact stress formula [30], the contact stress under the corresponding load can be calculated.…”

Section: Effect Of Loadmentioning

confidence: 99%

“…When nano-MoS 2 is not added, in fact, the oil-based drilling uid itself also has a lubricating effect and can form a protective lm on the friction surface. However, under the high contact pressure and friction shear force during the friction process, it is easy to cause the oil lm formed on the friction contact surface to break easily [30]. And some particulate matter in the oil-based drilling uid formulation did not fully play an anti-wear role in the friction process [17].…”

Section: Wear Analysismentioning

confidence: 99%

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Lubrication performance of nano-molybdenum disulfide as additive in drilling fluid in polycrystalline diamond compacts

Gou,

Chen,

et al. 2023

Int J Adv Manuf Technol

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The effects of nano-molybdenum disul de (nano-MoS 2 ) in drilling uid and drilling uid on the tribological behavior of polycrystalline diamond compact (PDC) with cobalt leaching depth of 422µm were studied by ball-on-disk friction test, and the effects of concentration and bearing capacity were evaluated respectively. The results showed that the addition of nano-MoS 2 improves the lubrication effect of drilling uid and the friction performance of PDC. The lubrication mechanism of drilling uid and the mechanism of adding nano-MoS 2 to improve tribological properties are discussed. The results further deepen the understanding of the friction and wear mechanism of PDC in lubricating environment, and provide a theoretical reference for the application of PDC in the future petroleum eld.

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Section: Afm Analysismentioning

confidence: 66%

“…The experiment was carried out for 30 minutes at 150r / min. According to the Hertz contact stress formula [30], the contact stress under the corresponding load can be calculated.…”

Section: Effect Of Loadmentioning

confidence: 99%

Section: Wear Analysismentioning

confidence: 99%

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Lubrication performance of nano-molybdenum disulfide as additive in drilling fluid in polycrystalline diamond compacts

Gou,

Chen,

et al. 2023

Int J Adv Manuf Technol

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“…The results of friction experiments and wear surface analysis showed that there are indeed differences in the friction behaviour of PDC under three different base oils. 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.…”

Section: Discussionmentioning

confidence: 99%

“…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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Loss and Recovery of Nano-MoS2 Lubricity in Carbon Soot Contaminated Polyalphaolefin

Miao,

Zhong,

et al. 2023

Tribol Lett

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Tribofilm formation mechanism and friction behavior of polycrystalline diamond compact after cobalt leaching added molybdenum disulfide nanoparticles in different base oils

Cited by 10 publications

References 39 publications

Lubrication performance of nano-molybdenum disulfide as additive in drilling fluid in polycrystalline diamond compacts

Lubrication performance of nano-molybdenum disulfide as additive in drilling fluid in polycrystalline diamond compacts

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

Loss and Recovery of Nano-MoS2 Lubricity in Carbon Soot Contaminated Polyalphaolefin

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