Dry sliding behaviour of non-hydrogenated DLC coatings against Al, Cu and Ti in ambient air and argon

E. Konca; Y. T. Cheng; A. T. Alpas

doi:10.1016/j.diamond.2005.11.030

Dry sliding behaviour of non-hydrogenated DLC coatings against Al, Cu and Ti in ambient air and argon

E. Konca, Y. T. Cheng, A. T. Alpas

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

48 Scopus citations

Abstract

Magnetron sputtered non-hydrogenated diamond-like carbon (DLC) coatings were tested against Al, Cu and Ti pins using a vacuum pin-on-disc tribometer. The objective was to investigate the effect of counterface material on the tribological behaviour of the non-hydrogenated DLC coatings in air (29% RH) and an inert atmosphere (argon). In argon, a significant amount of adhesion and material transfer occurred from the Al and Ti pins to the DLC coating surfaces, increasing the coefficient of friction (COF) and inflicting severe damage to the coatings. Wear and material transfer between DLC coating and Cu were negligible in argon. Compared to the tests in argon, the tribological performance of DLC coatings against Al and Ti significantly improved in ambient air. In contrast, the wear rate of DLC coatings against Cu was higher in ambient air and its COF was similar under both conditions. In ambient air, carbonaceous layers were generated on Al and Ti but not on Cu. The adsorption of water vapour on the DLC coating surface and the formation of an easy-to-shear carbonaceous material at the sliding interface reduced the COFs and wear rates of non-hydrogenated DLC coatings in air with humidity.

Original language	English
Pages (from-to)	939-943
Number of pages	5
Journal	Diamond and Related Materials
Volume	15
Issue number	4-8
DOIs	https://doi.org/10.1016/j.diamond.2005.11.030
State	Published - Apr 2006

Bibliographical note

Funding Information:
The authors are grateful to NSERC and GM of Canada for the financial support provided through the Industrial Research Chair program at the University of Windsor.

Funding

The authors are grateful to NSERC and GM of Canada for the financial support provided through the Industrial Research Chair program at the University of Windsor.

Funders	Funder number
NSERC and GM of Canada
University of Windsor
Natural Sciences and Engineering Research Council of Canada

Keywords

Aluminum
Coatings
Diamond-like carbon
Tribology
Wear

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Chemistry
Mechanical Engineering
Materials Chemistry
Electrical and Electronic Engineering

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10.1016/j.diamond.2005.11.030

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abstract = "Magnetron sputtered non-hydrogenated diamond-like carbon (DLC) coatings were tested against Al, Cu and Ti pins using a vacuum pin-on-disc tribometer. The objective was to investigate the effect of counterface material on the tribological behaviour of the non-hydrogenated DLC coatings in air (29% RH) and an inert atmosphere (argon). In argon, a significant amount of adhesion and material transfer occurred from the Al and Ti pins to the DLC coating surfaces, increasing the coefficient of friction (COF) and inflicting severe damage to the coatings. Wear and material transfer between DLC coating and Cu were negligible in argon. Compared to the tests in argon, the tribological performance of DLC coatings against Al and Ti significantly improved in ambient air. In contrast, the wear rate of DLC coatings against Cu was higher in ambient air and its COF was similar under both conditions. In ambient air, carbonaceous layers were generated on Al and Ti but not on Cu. The adsorption of water vapour on the DLC coating surface and the formation of an easy-to-shear carbonaceous material at the sliding interface reduced the COFs and wear rates of non-hydrogenated DLC coatings in air with humidity.",

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author = "E. Konca and Cheng, {Y. T.} and Alpas, {A. T.}",

note = "Funding Information: The authors are grateful to NSERC and GM of Canada for the financial support provided through the Industrial Research Chair program at the University of Windsor.",

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AU - Konca, E.

AU - Cheng, Y. T.

AU - Alpas, A. T.

N1 - Funding Information: The authors are grateful to NSERC and GM of Canada for the financial support provided through the Industrial Research Chair program at the University of Windsor.

PY - 2006/4

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N2 - Magnetron sputtered non-hydrogenated diamond-like carbon (DLC) coatings were tested against Al, Cu and Ti pins using a vacuum pin-on-disc tribometer. The objective was to investigate the effect of counterface material on the tribological behaviour of the non-hydrogenated DLC coatings in air (29% RH) and an inert atmosphere (argon). In argon, a significant amount of adhesion and material transfer occurred from the Al and Ti pins to the DLC coating surfaces, increasing the coefficient of friction (COF) and inflicting severe damage to the coatings. Wear and material transfer between DLC coating and Cu were negligible in argon. Compared to the tests in argon, the tribological performance of DLC coatings against Al and Ti significantly improved in ambient air. In contrast, the wear rate of DLC coatings against Cu was higher in ambient air and its COF was similar under both conditions. In ambient air, carbonaceous layers were generated on Al and Ti but not on Cu. The adsorption of water vapour on the DLC coating surface and the formation of an easy-to-shear carbonaceous material at the sliding interface reduced the COFs and wear rates of non-hydrogenated DLC coatings in air with humidity.

AB - Magnetron sputtered non-hydrogenated diamond-like carbon (DLC) coatings were tested against Al, Cu and Ti pins using a vacuum pin-on-disc tribometer. The objective was to investigate the effect of counterface material on the tribological behaviour of the non-hydrogenated DLC coatings in air (29% RH) and an inert atmosphere (argon). In argon, a significant amount of adhesion and material transfer occurred from the Al and Ti pins to the DLC coating surfaces, increasing the coefficient of friction (COF) and inflicting severe damage to the coatings. Wear and material transfer between DLC coating and Cu were negligible in argon. Compared to the tests in argon, the tribological performance of DLC coatings against Al and Ti significantly improved in ambient air. In contrast, the wear rate of DLC coatings against Cu was higher in ambient air and its COF was similar under both conditions. In ambient air, carbonaceous layers were generated on Al and Ti but not on Cu. The adsorption of water vapour on the DLC coating surface and the formation of an easy-to-shear carbonaceous material at the sliding interface reduced the COFs and wear rates of non-hydrogenated DLC coatings in air with humidity.

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KW - Wear

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Dry sliding behaviour of non-hydrogenated DLC coatings against Al, Cu and Ti in ambient air and argon

Abstract

Bibliographical note

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Keywords

ASJC Scopus subject areas

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