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

Papken  Hovsepian; Paranjayee Mandal; Arutiun Ehiasarian; György Sáfrán; Roel Tietema; Dave Doerwald

doi:10.1016/j.apsusc.2016.01.007

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

Papken Hovsepian, Paranjayee Mandal, Arutiun Ehiasarian, György Sáfrán, Roel Tietema, Dave Doerwald

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

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 (WS2 and MoS2, where metals were supplied from coating and sulphur from engine oil) in the transfer layer.

Original language	English
Pages (from-to)	260-274
Number of pages	15
Journal	Applied Surface Science
Volume	366
Early online date	7 Jan 2016
DOIs	https://doi.org/10.1016/j.apsusc.2016.01.007
Publication status	Published - 15 Mar 2016
Externally published	Yes

Keywords

sliding friction
tribochemical reaction
wear
Raman spectroscopy

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10.1016/j.apsusc.2016.01.007

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

abstract = "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 {\textquoteleft}in-situ{\textquoteright} formed metal sulphides (WS2 and MoS2, where metals were supplied from coating and sulphur from engine oil) in the transfer layer.",

keywords = "sliding friction, tribochemical reaction , wear, Raman spectroscopy",

author = "Papken Hovsepian and Paranjayee Mandal and Arutiun Ehiasarian and Gy{\"o}rgy S{\'a}fr{\'a}n and Roel Tietema and Dave Doerwald",

year = "2016",

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doi = "10.1016/j.apsusc.2016.01.007",

language = "English",

volume = "366",

pages = "260--274",

journal = "Applied Surface Science",

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T1 - Friction and wear behaviour of Mo–W doped carbon-based coating during boundary lubricated sliding

AU - Hovsepian, Papken

AU - Mandal, Paranjayee

AU - Ehiasarian, Arutiun

AU - Sáfrán, György

AU - Tietema, Roel

AU - Doerwald, Dave

PY - 2016/3/15

Y1 - 2016/3/15

N2 - 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 (WS2 and MoS2, where metals were supplied from coating and sulphur from engine oil) in the transfer layer.

AB - 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 (WS2 and MoS2, where metals were supplied from coating and sulphur from engine oil) in the transfer layer.

KW - sliding friction

KW - tribochemical reaction

KW - wear

KW - Raman spectroscopy

UR - http://www.sciencedirect.com/science/article/pii/S0169433216000210

U2 - 10.1016/j.apsusc.2016.01.007

DO - 10.1016/j.apsusc.2016.01.007

M3 - Article

VL - 366

SP - 260

EP - 274

JO - Applied Surface Science

JF - Applied Surface Science

SN - 0169-4332

ER -

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

Abstract

Keywords

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Tribological study of novel metal-doped carbon-based coatings with enhanced thermal stability

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