The role of hydrogen atmosphere on the tribological behavior of non-hydrogenated DLC coatings against aluminum

E. Konca; Y. T. Cheng; A. M. Weiner; J. M. Dasch; A. T. Alpas

doi:10.1080/10402000701260906

The role of hydrogen atmosphere on the tribological behavior of non-hydrogenated DLC coatings against aluminum

E. Konca
, Y. T. Cheng
, A. M. Weiner
, J. M. Dasch
, A. T. Alpas

Producción científica: Article › revisión exhaustiva

36 Citas (Scopus)

Resumen

Diamond-like carbon (DLC) coatings are promising candidates as tool coatings for dry machining of aluminum alloys as aluminum has a lower tendency to adhere to the DLC surface when compared to other hard coatings in ambient conditions. This study investigated the tribological behavior of non-hydrogenated DLC coatings against a 319 Al alloy in various environments including ambient air (47% RH), vacuum (6.65 10- 4 Pa), inert gases (Ar, He, and N2) and a mixture of 60% He-40% H2. Unlike the results from the other test conditions, significantly low coefficient of friction (COF) values, ranging between 0.01-0.02, were observed in the 60% He-40% H2 mixture after a brief period with a high COF of 0.70. The formation of a carbonaceous tribolayer on the counterface and the passivation of the sliding surfaces by the chemisorption of hydrogen were suggested as mechanisms that might have been responsible for the very low COF behavior of the non-hydrogenated DLC coatings in the 60% He-40% H2 mixture.

Idioma original	English
Páginas (desde-hasta)	178-186
Número de páginas	9
Publicación	Tribology Transactions
Volumen	50
N.º	2
DOI	https://doi.org/10.1080/10402000701260906
Estado	Published - 2007

Nota bibliográfica

Funding Information:
The authors thank Teer Coatings Ltd (Worcestershire, UK) for the DLC coatings received for this study. Micro-Raman spectra of the samples were performed by Charlene Hayden (GM R&D, CES Lab.), and discussions with Yue Qi (GM R&D, MPL Lab.) were very helpful. Financial support from NSERC and GM of Canada through the Industrial Chair Program at the University of Windsor is gratefully acknowledged.

Financiación

The authors thank Teer Coatings Ltd (Worcestershire, UK) for the DLC coatings received for this study. Micro-Raman spectra of the samples were performed by Charlene Hayden (GM R&D, CES Lab.), and discussions with Yue Qi (GM R&D, MPL Lab.) were very helpful. Financial support from NSERC and GM of Canada through the Industrial Chair Program at the University of Windsor is gratefully acknowledged.

Financiadores
University of Windsor
Natural Sciences and Engineering Research Council of Canada

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1080/10402000701260906

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title = "The role of hydrogen atmosphere on the tribological behavior of non-hydrogenated DLC coatings against aluminum",

abstract = "Diamond-like carbon (DLC) coatings are promising candidates as tool coatings for dry machining of aluminum alloys as aluminum has a lower tendency to adhere to the DLC surface when compared to other hard coatings in ambient conditions. This study investigated the tribological behavior of non-hydrogenated DLC coatings against a 319 Al alloy in various environments including ambient air (47\% RH), vacuum (6.65 10- 4 Pa), inert gases (Ar, He, and N2) and a mixture of 60\% He-40\% H2. Unlike the results from the other test conditions, significantly low coefficient of friction (COF) values, ranging between 0.01-0.02, were observed in the 60\% He-40\% H2 mixture after a brief period with a high COF of 0.70. The formation of a carbonaceous tribolayer on the counterface and the passivation of the sliding surfaces by the chemisorption of hydrogen were suggested as mechanisms that might have been responsible for the very low COF behavior of the non-hydrogenated DLC coatings in the 60\% He-40\% H2 mixture.",

keywords = "Adsorption, Aluminum, DLC, Friction, Hydrogen, Pin-on-Disc, Transfer Layer, Tribology",

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note = "Funding Information: The authors thank Teer Coatings Ltd (Worcestershire, UK) for the DLC coatings received for this study. Micro-Raman spectra of the samples were performed by Charlene Hayden (GM R\&D, CES Lab.), and discussions with Yue Qi (GM R\&D, MPL Lab.) were very helpful. Financial support from NSERC and GM of Canada through the Industrial Chair Program at the University of Windsor is gratefully acknowledged.",

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T1 - The role of hydrogen atmosphere on the tribological behavior of non-hydrogenated DLC coatings against aluminum

AU - Konca, E.

AU - Cheng, Y. T.

AU - Weiner, A. M.

AU - Dasch, J. M.

AU - Alpas, A. T.

N1 - Funding Information: The authors thank Teer Coatings Ltd (Worcestershire, UK) for the DLC coatings received for this study. Micro-Raman spectra of the samples were performed by Charlene Hayden (GM R&D, CES Lab.), and discussions with Yue Qi (GM R&D, MPL Lab.) were very helpful. Financial support from NSERC and GM of Canada through the Industrial Chair Program at the University of Windsor is gratefully acknowledged.

PY - 2007

Y1 - 2007

N2 - Diamond-like carbon (DLC) coatings are promising candidates as tool coatings for dry machining of aluminum alloys as aluminum has a lower tendency to adhere to the DLC surface when compared to other hard coatings in ambient conditions. This study investigated the tribological behavior of non-hydrogenated DLC coatings against a 319 Al alloy in various environments including ambient air (47% RH), vacuum (6.65 10- 4 Pa), inert gases (Ar, He, and N2) and a mixture of 60% He-40% H2. Unlike the results from the other test conditions, significantly low coefficient of friction (COF) values, ranging between 0.01-0.02, were observed in the 60% He-40% H2 mixture after a brief period with a high COF of 0.70. The formation of a carbonaceous tribolayer on the counterface and the passivation of the sliding surfaces by the chemisorption of hydrogen were suggested as mechanisms that might have been responsible for the very low COF behavior of the non-hydrogenated DLC coatings in the 60% He-40% H2 mixture.

AB - Diamond-like carbon (DLC) coatings are promising candidates as tool coatings for dry machining of aluminum alloys as aluminum has a lower tendency to adhere to the DLC surface when compared to other hard coatings in ambient conditions. This study investigated the tribological behavior of non-hydrogenated DLC coatings against a 319 Al alloy in various environments including ambient air (47% RH), vacuum (6.65 10- 4 Pa), inert gases (Ar, He, and N2) and a mixture of 60% He-40% H2. Unlike the results from the other test conditions, significantly low coefficient of friction (COF) values, ranging between 0.01-0.02, were observed in the 60% He-40% H2 mixture after a brief period with a high COF of 0.70. The formation of a carbonaceous tribolayer on the counterface and the passivation of the sliding surfaces by the chemisorption of hydrogen were suggested as mechanisms that might have been responsible for the very low COF behavior of the non-hydrogenated DLC coatings in the 60% He-40% H2 mixture.

KW - Adsorption

KW - Aluminum

KW - DLC

KW - Friction

KW - Hydrogen

KW - Pin-on-Disc

KW - Transfer Layer

KW - Tribology

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The role of hydrogen atmosphere on the tribological behavior of non-hydrogenated DLC coatings against aluminum

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