Lubricated sliding wear mechanism of chromium-doped graphite-like carbon coating

Mandal, Paranjayee; Ehiasarian, Arutiun P.; Hovsepian, P.Eh.

doi:10.1016/j.triboint.2014.04.007

Cited by 24 publications

(11 citation statements)

References 40 publications

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“…During analysis, the background of spectrum was corrected using a 2 nd order polynomial whereas a multi-peak Gaussian-fitting function was used to deconvolute the spectrum and identify the Raman peaks. More details on the parameters used during experiment and the spectrum analysis were described elsewhere [32]. To avoid ambiguity in peak position identification, powder samples from pure WS 2 and MoS 2 were analysed and their Raman spectra used as a reference.…”

Section: Characterisation Techniquesmentioning

confidence: 99%

Friction and wear behaviour of Mo–W doped carbon-based coating during boundary lubricated sliding

Hovsepian

Mandal

Ehiasarian

et al. 2016

Applied Surface Science

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A molybdenum and tungsten doped carbon-based coating (Mo−W−C) was developed in order to provide low friction in boundary lubricated sliding condition at ambient and at high temperature. The Mo−W−C coating showed the lowest friction coefficient among a number of commercially available state-of-the-art DLC coatings at ambient temperature. At elevated temperature (200°C), Mo−W−C coating showed a significant reduction in friction coefficient with sliding distance in contrast to DLC coatings. Raman spectroscopy revealed the importance of combined Mo and W doping for achieving low friction at both ambient and high temperature. The significant decrease in friction and wear rate was attributed to the presence of graphitic carbon debris (from coating) and 'in-situ' formed metal sulphides (WS 2 and MoS 2 , where metals were supplied from coating and sulphur from engine oil) in the transfer layer.

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Section: Characterisation Techniquesmentioning

confidence: 99%

Friction and wear behaviour of Mo–W doped carbon-based coating during boundary lubricated sliding

Hovsepian

Mandal

Ehiasarian

et al. 2016

Applied Surface Science

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Section: Pin-on-disc Testmentioning

confidence: 99%

Tribological behaviour of Mo–W doped carbon-based coating at ambient condition

Mandal

Ehiasarian

Hovsepian

2015

Tribology International

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“…During analysis, the background of spectrum was corrected using a 2 nd order polynomial whereas a multi-peak Gaussian-fitting function was used to deconvolute the spectrum and identify the Raman peaks. More details on the parameters used during experiment and the spectrum analysis were described elsewhere [12]. A significant change in surface morphology is observed (figure 2a) due to the development of metal carbide phases at 400°C (later confirmed by XRD and Raman analyses).…”

Section: Characterisation Techniquesmentioning

confidence: 89%