The growth behavior and surface performance enhancement of diamond film deposited on polycrystalline diamond compact

Fan, Saifei; Lv, Xiaoyi; Xu, Honggang; Wang, Qiliang

doi:10.1016/j.diamond.2021.108682

Cited by 8 publications

(3 citation statements)

References 42 publications

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“…The substances generated by the oxidation reaction cover the surface of PDC, part of which plays a protective role and the other part may act as abrasive particles, negative effects on friction. On the other hand, not only the surface of the PDC leaching cobalt element was worn, but also the Si 3 N 4 pair of grinding balls was also worn, and the shedding Si 3 N 4 debris was transferred to the surface of the PDC leaching cobalt element to form adhesion [34]. After adding nano-MoS 2 , it can be seen that the content of C element is much higher than that without adding nano-MoS 2 , which indicates that the surface of PDC leaching cobalt element is less worn after adding nano-MoS 2 , which is different from the phenomenon that carbon-based transfer lm is formed due to the high C content reported in the previous literature [35], so the friction coe cient of PDC after adding nano-MoS 2 is smaller and the wear is less.…”

Section: Sem and Eds Analysismentioning

confidence: 99%

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: Sem and Eds Analysismentioning

confidence: 99%

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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“…As pressure increases, secondary nucleation starts to be relatively strong, once nucleation increases with pressure and methane concentration 25,42 so that the growing crystals do not form facets completely, they are suppressed by new layers of crystals in the early stages of formation, the facets that survive are those favored by growth conditions.…”

Section: Morphology and Thicknessmentioning

confidence: 99%

Growth and Characterization of Polycrystalline CVD Diamond Films Obtained by MWPACVD at High Power 2,45GHz Microwave Discharge

et al. 2022

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Among all the allotropic forms of carbon, diamond has attracted a broad scientific and technological interest for its extreme and unique properties rarely matched by other materials in nature. In a rapid rise from a technological point of view, much has been achieved in the study of obtaining this material through CVD technique. Studies of CVD diamond growth parameters of monocrystalline structure, underway in the team, are very expensive and time-consuming requiring in-depth studies of CVD diamond growth parameters of polycrystalline structure. So, this work presents an analysis focused on obtaining CVD diamond films with polycrystalline structure through the 2.45 GHz microwave plasma activation method (MWPACVD) in high power regime using a modified substrate holder to find a set of parameters appropriated for getting uniform quality and growth rate of thick films. The films were characterized using Raman scattering spectroscopy and scanning electron microscopy. The results point to optimized conditions for depositing films with growth rates of up to 20 µm/h with low levels of intrinsic stress, good structural quality and uniform microcrystalline morphology along the deposition surface.

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“…Hot-filament chemical vapor deposition (HFCVD) is one of the most important methods to synthesize diamonds at low pressure and high temperature [1]. This process involves resistively heating a hot filament to a temperature in the range of 2000-2400 • C, which catalytically decomposes the source gases (CH 4 and H 2 ) into active C x H y precursors and atomic hydrogen, respectively.…”

Section: Introductionmentioning

confidence: 99%

CVD Diamond Growth Enhanced by a Dynamic Magnetic Field

et al. 2023

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A dynamic magnetic field (DMF) with different angular frequencies (50, 100, and 150 π rad/s) was introduced during diamond growth via hot filament chemical vapor deposition (HFCVD). The effects of the dynamic magnetic field on the growth rate, diamond quality, growth orientation, and deposition uniformity of large-area diamond films were investigated with scanning electron microscopy (SEM), X-ray diffractometry (XRD), and Raman spectroscopy. The correlation between diamond growth and angular frequency was discussed. The results showed that a faster growth rate (about 2.5 times) and higher diamond quality were obtained by increasing the angular frequency of the DMF. A (100) textured polycrystalline diamond film was achieved, and the preferential orientation was found to evolve from (110) to (100), while the expected uniform deposition of a large-area diamond film under DMF was not achieved. The enhancement effect of the DMF was ascribed to the activation of more gas molecules, which participated in CVD diamond growth.

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The growth behavior and surface performance enhancement of diamond film deposited on polycrystalline diamond compact

Cited by 8 publications

References 42 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

Growth and Characterization of Polycrystalline CVD Diamond Films Obtained by MWPACVD at High Power 2,45GHz Microwave Discharge

CVD Diamond Growth Enhanced by a Dynamic Magnetic Field

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