Nanotribology of Mo–Se–C films

Tomala, A.; Roy, Manish; Franek, F.

doi:10.1080/14786435.2010.495041

Cited by 15 publications

(7 citation statements)

References 36 publications

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“…The intensive and narrow peak at 2~ 44.5° was due to reflection from the steel substrate. The diffractograms of the MoS2 coatings were similar in many respects to those measured for transition metal-dichalcogenide-based coatings obtained through ion sputtering or PLD at room temperature [19,21,22,38]. The XRD patterns of these coatings showed an intense and broad peak near 2~ 13° and a pronounced peak at 2~ 33°, followed by a broad peak at 2~ 43°.…”

Section: The Structure and Composition Of Mos X Filmssupporting

confidence: 61%

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Reactive Pulsed Laser Deposition of Clustered-Type MoSx (x ~ 2, 3, and 4) Films and Their Solid Lubricant Properties at Low Temperature

et al. 2020

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We studied the tribological properties of amorphous molybdenum sulfide (MoSx) thin-film coatings during sliding friction in an oxidizing environment at a low temperature (−100 °C). To obtain films with different sulfur contents (x ~ 2, 3, and 4), we used reactive pulsed laser deposition, where laser ablation of the Mo target was performed in H2S at various pressures. The lowest coefficient of friction (0.08) was observed during tribo-testing of the MoS3 coating. This coating had good ductility and low wear; the wear of a steel counterbody was minimal. The MoS2 coating had the best wear resistance, due to the tribo-film adhering well to the coating in the wear track. Tribo-modification of the MoS2 coating, however, caused a higher coefficient of friction (0.16) and the most intensive wear of the counterbody. The MoS4 coating had inferior tribological properties. This study explored the mechanisms of possible tribo-chemical changes and structural rearrangements in MoSx coatings upon contact with a counterbody when exposed to oxygen and water. The properties of the tribo-film and the efficiency of its transfer onto the coating and/or the counterbody largely depended on local atomic packing of the nanoclusters that formed the structure of the amorphous MoSx films.

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Section: The Structure and Composition Of Mos X Filmssupporting

confidence: 61%

“…The most common structural state of deposited coatings is "amorphous", which is generally assumed to form from nanoclusters with a lamellar structure typical of the 2H-MoS 2 phase [19][20][21][22]. Friction sliding is associated with the tribo-induced crystallization of such coatings.…”

Section: Introductionmentioning

confidence: 99%

Reactive Pulsed Laser Deposition of Clustered-Type MoSx (x ~ 2, 3, and 4) Films and Their Solid Lubricant Properties at Low Temperature

et al. 2020

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“…Although RMS surface roughness does not carry any information about slopes, sizes or frequencies of asperities, it is still an important parameter for predicting and understanding the properties of tribological systems [75]. Previous investigations with carbon films indicated that CoF increases with increase of roughness [76,77].…”

Section: Film Roughness Effect-lubricant Usementioning

confidence: 99%

Nanotribological Behavior of Carbon Based Thin Films: Friction and Lubricity Mechanisms at the Nanoscale

2013

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The use of materials with very attractive friction and wear properties has raised much attention in research and industrial sectors. A wide range of tribological applications, including rolling and sliding bearings, machining, mechanical seals, biomedical implants and microelectromechanical systems (MEMS), require thin films with high mechanical strength, chemical inertness, broad optical transparency, high refractive index, wide bandgap excellent thermal conductivity and extremely low thermal expansion. Carbon based thin films like diamond, diamond-like carbon, carbon nitride and cubic boron nitride known as “super-hard” material have been studied thoroughly as the ideal candidate for tribological applications. In this study, the results of experimental and simulation works on the nanotribological behavior of carbon films and fundamental mechanisms of friction and lubricity at the nano-scale are reviewed. The study is focused on the nanomechanical properties and analysis of the nanoscratching processes at low loads to obtain quantitative analysis, the comparison obtain quantitative analysis, the comparison of their elastic/plastic deformation response, and nanotribological behavior of the a-C, ta-C, a-C:H, CNx, and a-C:M films. For ta-C and a-C:M films new data are presented and discussed

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“…Tomala et al 39 found that for W-S-C films, the atomic force microscopy (AFM) pull-off force increases with carbon content, and the friction force is highest for the film with the highest carbon content. Tomala et al 40 also noted that the pull-off force and wear decrease while the friction force and hardness increase with carbon content in Mo-Se-C films.…”

Section: Introductionmentioning

confidence: 95%

The influence of carbon content on the microtribological performance of W-S-C films

Tomastik

Tomala

Pauschitz

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part J:

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The layered structure of transition metal dichalcogenides makes them promising materials for self-lubricating films. Transition metal dichalcogenide films can be considered as substitute for carbon-based self-lubricating films in several varieties of environmental conditions. The tribological properties of these films at high load have been studied extensively. However, the tribological behaviour of these films in the milli-Newton load range relevant for micro-electro-mechanical systems has hardly been reported. In the present work, the microtribological response of W-S-C coatings deposited by reactive sputtering is investigated. For that purpose, W-S-C coatings with various concentrations of carbon were deposited on steel substrates using magnetron sputtering. The friction and wear of these coatings are determined as function of applied load and carbon content. The results show that, even though the wear of these films increases with applied load and decreases with carbon content, the friction coefficient is minimum for the films containing the highest amount of carbon at low and intermediate load. It is maximum for the films containing minimum carbon at the highest load. There is no evidence for a transfer layer on the worn surfaces.

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Nanotribology of Mo–Se–C films

Cited by 15 publications

References 36 publications

Reactive Pulsed Laser Deposition of Clustered-Type MoSx (x ~ 2, 3, and 4) Films and Their Solid Lubricant Properties at Low Temperature

Reactive Pulsed Laser Deposition of Clustered-Type MoSx (x ~ 2, 3, and 4) Films and Their Solid Lubricant Properties at Low Temperature

Nanotribological Behavior of Carbon Based Thin Films: Friction and Lubricity Mechanisms at the Nanoscale

The influence of carbon content on the microtribological performance of W-S-C films

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