Tribological behavior of copper-molybdenum disulfide composites

Xiao, Jinkun; Zhang, Wei; Li, Liming; Zhang, Lei; Zhang, Chao

doi:10.1016/j.wear.2017.05.006

Cited by 62 publications

(31 citation statements)

References 30 publications

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“…The experimental data is in good agreement with the equation. The variation of the friction coefficient with the lubricant content is also in agreement with many other MMSCs [10,11,13]. Therefore, the relationships among the friction coefficient, coverage of lubricating film, and volume fraction of the lubricant can be successfully established via the quantitative characterization of the worn surface using XPS.…”

Section: Resultssupporting

confidence: 83%

“…The value of μ m in Eq. (5) is selected from the friction coefficient of pure copper (0.76), and the value of μ f is assigned as 0.1 as the friction coefficient of the MoS 2 pin according to some literatures [12,13,28]. It can be observed that the experimental data agrees well with Eq.…”

Section: Resultsmentioning

confidence: 67%

“…As a result, it can be justifiably assumed that the latter two models produce the same friction coefficients as that of the lubricating film (μ f ). Moreover, based on the results reported in the literatures, the counter surfaces of MMSCs are usually covered with continuous transfer layers, which have the same chemical composition as MMSCs; thus, the lubricating film on the transfer layer can be assumed to have an area fraction equivalent to that of the worn surface of the composite [13,28]. The contact rates for the metal-metal contact, metal-lubricating-film contact, and lubricating-film-lubricating-film contact are α m α m , 2α m α f , and α f α f , respectively.…”

Section: Methods For Quantifying Lubricating Film Coverage 21 Lubricamentioning

confidence: 99%

“…The film coverage has been defined as an area ratio of the tribosurface covered by the lubricant to the total tribosurface. Many works have identified that the tribosurfaces of self-lubricating composites are rich in lubricant, but the exact coverage fraction of the lubricating film on the tribosurface is unknown [13,14]. In order to study the influence of the lubricating film on the friction coefficient, the coverage of the lubricating film has to be quantitatively characterized.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Friction of metal-matrix self-lubricating composites: Relationships among lubricant content, lubricating film coverage, and friction coefficient

Xiao

Zhang

et al. 2019

Friction

Self Cite

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Metal-matrix self-lubricating composites can exhibit excellent tribological properties owing to the release of solid lubricant from the matrix and the formation of a lubricating film on the tribosurface. The coverage of the lubricating film on a worn surface significantly influences the sliding process. However, it is difficult to quantify the film coverage owing to the thin and discontinuous character of the lubricating film and the high roughness of the worn surface. A quantitative characterization of the lubricating film coverage based on X-ray photoelectron spectroscopy (XPS) analysis was developed in this study. The friction tests of Cu-MoS 2 composites with a MoS 2 content of 0-40 vol% were conducted, and the worn surfaces of the composites were observed and analyzed. Further, the influence of the MoS 2 volume content on the coverage of the lubricating film on the worn surface was investigated. The relationships among the volume fraction of the lubricant, coverage of the lubricating film, and the friction coefficient were established. The friction model for the metal matrix self-lubricating composites was developed and verified to facilitate the composition design and friction coefficient prediction of self-lubricating composites.

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Section: Resultssupporting

confidence: 83%

Section: Resultsmentioning

confidence: 67%

Section: Methods For Quantifying Lubricating Film Coverage 21 Lubricamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Friction of metal-matrix self-lubricating composites: Relationships among lubricant content, lubricating film coverage, and friction coefficient

Xiao

Zhang

et al. 2019

Friction

Self Cite

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“…Copper (Cu) is extensively utilized in disc brakes, contact strips, bearings and electronic packaging materials owing to its good wear resistance, high strength and excellent thermal conductivity at both room and high temperatures. [1][2][3][4][5][6][7][8][9][10] Despite the wide application of copper, there is still an increasing demand for improvement in the tribological and thermal performances of Cu in various industries. For example, high speed trains require brake pads with both excellent wear resistance and heat conduction properties in order to ensure the safe operation of the trains 11 and the integration and packaging of electronic components demand improved thermal performance to increase the energy density.…”

Section: Introductionmentioning

confidence: 99%

Graphene platelet reinforced copper composites for improved tribological and thermal properties

Chen

Huang

et al. 2019

RSC Adv.

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In this work, investigations were conducted to evaluate a type of graphene platelet-reinforced copper (GPL/Cu) composite for enhanced tribological and thermal properties. The pin-on-disc (steel) resultsshow that the wear loss and the friction coefficient of the composites decrease by nearly 80% and 70%, respectively, in comparison with those of pure Cu. Thermal conductivity of the composites initially improves substantially by approximately 30% with a slight loading of 0.25 vol% GPLs and decreases gradually with a higher content of GPLs. Microstructural analysis reveals that the enhancement in the tribological property is attributed to both the self-lubricating property of GPLs and grain refinement while the improvement in the thermal property is closely associated with the uniform dispersion of GPLs. Fig. 8 SEM images of the worn (a and d) and fractured surfaces (b and c) of GPL/Cu composites and camera images of the surface after sliding. (e) Pure Cu, (f) 0.25 vol%, (g) 0.5 vol%, (h) 1 vol%, (i) 1.5 vol%, (j) 2 vol%.39890 | RSC Adv., 2019,9,[39883][39884][39885][39886][39887][39888][39889][39890][39891][39892] This journal is

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Tool wear and machinability investigations in dry turning of Cu/Mo-SiCp hybrid composites

Şap

Usca

Gupta

et al. 2021

Int J Adv Manuf Technol

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Tribological behavior of copper-molybdenum disulfide composites

Cited by 62 publications

References 30 publications

Friction of metal-matrix self-lubricating composites: Relationships among lubricant content, lubricating film coverage, and friction coefficient

Friction of metal-matrix self-lubricating composites: Relationships among lubricant content, lubricating film coverage, and friction coefficient

Graphene platelet reinforced copper composites for improved tribological and thermal properties

Tool wear and machinability investigations in dry turning of Cu/Mo-SiCp hybrid composites

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