Transfer of molybdenum sulphide coating material onto corundum balls in fretting wear tests

Zhang, X

doi:10.1016/j.tsf.2003.09.051

Cited by 2 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3b, the S 2p spectrum had resolvable peaks at 161.8 and 163.0 eV corresponding to MoS 2 . Both the molybdenum and sulfur peaks agreed with established literature values for MoS 2 [25,26,33,61]. Additional peaks evident in Fig.…”

Section: Resultssupporting

confidence: 87%

“…Additional peaks evident in Fig. 3a at binding energies of 232.3 and 235.4 eV are assigned to MoO 3 [25,33,62]. A second sulfur species detected primarily on unworn surfaces was strongly exhibited in the vacuum sample.…”

Section: Resultsmentioning

confidence: 97%

“…AES and XPS played integral parts in determining the role of oxygen chemistry with MoS 2 -based films. Operation in ambient and humid conditions was found to lead to the formation of MoO 3 within the wear track [8,[31][32][33][34][35]. STM and AFM data guided the development of theories related to defect site formation and detailed the frictional dependence of MoS 2 orientation [28,36].…”

Section: Introductionmentioning

confidence: 85%

See 2 more Smart Citations

Environmental Effects on the Tribology and Microstructure of MoS2–Sb2O3–C Films

et al. 2011

View full text Add to dashboard Cite

The tribology of molybdenum disulfide (MoS 2 )-Sb 2 O 3 -C films was tested under a variety of environmental conditions (ambient 50% RH, 10 -7 Torr vacuum, 150 Torr oxygen, and 8 Torr water) and correlated with the composition of the surface composition expressed while sliding. High friction and low friction modes of behavior were detected. The lowest coefficient of friction, 0.06, was achieved under vacuum, while sliding in 8 Torr water and ambient conditions both yielded the highest value of 0.15. Water vapor was determined to be the environmental species responsible for high friction performance. XPS evaluations revealed a preferential expression of MoS 2 at the surface of wear tracks produced under vacuum and an increase in Sb 2 O 3 concentration in wear tracks produced in ambient air (50% RH). In addition, wear tracks produced by sliding in vacuum exhibited the lowest surface roughness as compared to those produced in other environments, consistent with the picture of low friction originating from well-ordered MoS 2 layers produced through sliding in vacuum.

show abstract

Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 85%

See 1 more Smart Citation

Environmental Effects on the Tribology and Microstructure of MoS2–Sb2O3–C Films

et al. 2011

View full text Add to dashboard Cite

show abstract

“…These high properties are the most evident at friction in vacuum or inert and air atmosphere of low humidity. Increasing the ambient humidity can reduce the tribological properties of these materials [1,2]. Diselenides of tungsten and molybdenum are more resistant to oxidation in humid ambience than disulphides of these metals [3].…”

Section: Introductionmentioning

confidence: 99%

Pulsed laser deposition of antifriction thin-film coatings in vacuum and inert gas

Fominski

Романов

Kostitchev

2007

International Conference on Lasers, Applications, and Technologies 2007: Laser-Assisted Micro- And Nanotechnologies

View full text Add to dashboard Cite

MoSe x coatings were obtained by pulsed laser deposition in vacuum and inert Ar gas atmosphere at the pressure from 1 to 10 Pa. The deposition temperature was 200 0 С. The films were studied by means of X-ray diffraction, scanning and transmission electron spectroscopy, X-ray photoelectron spectroscopy, Rutherford backscattering spectroscopy of helium ions. The tribological properties of thin film coatings were investigated by pin-on-disk testing in air with 50% relative humidity. Chemical composition, structure, and tribological properties of the coatings were found to be sensitive to the presence of the inert gas. Thus, increasing the gas pressure from 1 to 10 Pa changes the chemical composition, so that the value of x increases from 1.5 to 2.4 in the principal deposition zone. At the optimal gas pressure (~ 2 Pa), the composition of the coating was close to the stoichiometric one, and the layer adjacent to the substrate consisted of MoSe x nano-crystals with the basal planes parallel to the substrate surface or oriented at small angles to the surface. The tribological properties of MoSe x coatings deposited on steel substrates depend on the gas pressure. The friction coefficient in air decreases from 0.08 for deposition in vacuum to 0.04 for deposition at the optimal pressure.

show abstract

Transfer of molybdenum sulphide coating material onto corundum balls in fretting wear tests

Cited by 2 publications

References 0 publications

Environmental Effects on the Tribology and Microstructure of MoS2–Sb2O3–C Films

Environmental Effects on the Tribology and Microstructure of MoS2–Sb2O3–C Films

Pulsed laser deposition of antifriction thin-film coatings in vacuum and inert gas

Contact Info

Product

Resources

About