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

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

doi:10.1007/s00170-023-12560-1

Cited by 2 publications

(1 citation statement)

References 42 publications

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“…In addition to the size benefits, nanoadditives can maintain a stable dispersion in drilling fluids and have unique advantages in plugging micropores . − …”

Section: Introductionmentioning

confidence: 99%

Tribological Effects of Quaternary Ammonium-Functionalized Montmorillonite as Water-Based Additives

Kang,

Du,

Hua

et al. 2024

Langmuir

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In this study, a water-soluble quaternary ammonium salt (QAS)-functionalized montmorillonite (MMT) was fabricated using a mechanochemical method as a high-performance water lubrication additive. The intercalation of QAS into the MMT layer expands the layer spacing of MMT, but does not affect the hydrophilicity of MMT. The ultrathin layer QAS-functionalized montmorillonite (QAS-MMT) demonstrated excellent water-stable dispersion and can be used as a water-based lubrication additive. Only 0.1% addition can reduce the friction coefficient by more than 71.4% and the wear volume by about 58.8% when compared to water, demonstrating its excellent friction reduction and antiwear performance. The frictional mechanism indicates that the physical adsorption film, together with the chemical reaction film, endows the QAS-MMT additives with outstanding tribological performance, provides excellent lubrication for the contact of steel/steel pairs, and prevents the steel surface from being further worn.

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“…In addition to the size benefits, nanoadditives can maintain a stable dispersion in drilling fluids and have unique advantages in plugging micropores . − …”

Section: Introductionmentioning

confidence: 99%

Tribological Effects of Quaternary Ammonium-Functionalized Montmorillonite as Water-Based Additives

Kang,

Du,

Hua

et al. 2024

Langmuir

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Fabrication of Vanadium Oxide‐encapsulated Hybrid Carbon Nanospheres for Enhanced Tribological Performance

Liu,

Li,

Wang

et al. 2024

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A new sulfur‐containing carbon nanospheres encapsulated with vanadium oxide (V@SCN) is synthesized through a one‐pot oxidation polymerization and then carbonization method. The prepared V@SCNs exhibit good dispersibility as a lubricant additive, which is owing to the inherited lipophilic organic functional groups in the sulfur‐containing carbon shell derived from the carbonization of polythiophene. The agglomeration and precipitation of metals in the base oil are also avoided through the encapsulation of lipophilic carbon shells. The stress and thermal simulation results show that the vanadium oxide core bestows upon the carbon nanospheres enhanced load resistance and superior thermal conductivity, which contributes to their excellent tribological properties. Introducing 0.04M‐V@SCN to the base oil leads to favorable tribological characteristics, such as a fourfold rise in extreme pressure capacity from 250 to 1050N, a reduction in friction coefficient from 0.2 to ≈0.1, and a substantial decrease in wear by 90.2%. The lubrication mechanism of V@SCNs as lubricant additive involves the formation of a robust protective film on the friction pair, which is formed via complex physical and chemical reactions with the friction pair during friction.

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

Cited by 2 publications

References 42 publications

Tribological Effects of Quaternary Ammonium-Functionalized Montmorillonite as Water-Based Additives

Tribological Effects of Quaternary Ammonium-Functionalized Montmorillonite as Water-Based Additives

Fabrication of Vanadium Oxide‐encapsulated Hybrid Carbon Nanospheres for Enhanced Tribological Performance

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