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An updated overview of diamond-like carbon coating in tribology

During the last two decades, the industry (including scientists) has focused on diamond-like carbon (DLC) coating because of its wide range of application in various fields. This material has numerous applications in mechanical, electrical, tribological, biomedical, and optical fields. Severe fricti...

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Main Authors: Al Mahmud, K.A.H., Kalam, M.A., Masjuki, Haji Hassan, Mobarak, H.M., Zulkifli, N.W.M.
Format: Article
Language:English
Published: 2015
Subjects:
T Technology (General)
TJ Mechanical engineering and machinery
Online Access:http://eprints.um.edu.my/13937/1/An_updated_overview_of_diamond-like_carbon_coating_in_tribology.pdf
http://eprints.um.edu.my/13937/
http://www.tandfonline.com/doi/pdf/10.1080/10408436.2014.940441
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spelling my.um.eprints.139372018-10-16T05:23:39Z http://eprints.um.edu.my/13937/ An updated overview of diamond-like carbon coating in tribology Al Mahmud, K.A.H. Kalam, M.A. Masjuki, Haji Hassan Mobarak, H.M. Zulkifli, N.W.M. T Technology (General) TJ Mechanical engineering and machinery During the last two decades, the industry (including scientists) has focused on diamond-like carbon (DLC) coating because of its wide range of application in various fields. This material has numerous applications in mechanical, electrical, tribological, biomedical, and optical fields. Severe friction and wear in some machine parts consumes high amount of energy, which makes the process energy inefficient. Thus, DLC coating can be an effective means to lower the friction and wear rate. Some important process variables that affect the tribological characteristics of DLC coating are adhesion promoter intermediate layer, substrate surface roughness, hydrogen incorporation or hydrogen non involvement, and coating deposition parameters (e.g., bias voltage, etching, current, precursor gas, time, and substrate temperature). Working condition of DLC-coated parts also affects the tribological characteristics, such as temperature, sliding speed and load, relative humidity, counter surface, and lubrication media (DLC additive interaction). Different types of lubricated oils and additives are used in engine parts to minimize friction and wear. DLC can be coated to the respective engine parts; however, DLC does not behave accordingly after coating because of lubricant oil and additive interaction with DLC. Some additive interacts positively and some behave negatively because of the tribochemical reactions between DLC coating and additives. Numerous conflicting views have been presented by several researchers regarding this coating additive interaction, resulting in unclear determination of true mechanism of such interaction. However, lubricant additive has been established to be more inert to DLC coating compared with uncoated metal surface because the additive is fabricated in such a way that it can react with metal surfaces. In this article, the tribological characteristics of different types of DLC coating in dry and lubricated conditions will be presented, and their behavior will be discussed in relation to working condition and processing parameters. 2015-03 Article PeerReviewed application/pdf en http://eprints.um.edu.my/13937/1/An_updated_overview_of_diamond-like_carbon_coating_in_tribology.pdf Al Mahmud, K.A.H. and Kalam, M.A. and Masjuki, Haji Hassan and Mobarak, H.M. and Zulkifli, N.W.M. (2015) An updated overview of diamond-like carbon coating in tribology. Critical Reviews in Solid State and Materials Sciences, 40 (2). pp. 90-118. ISSN 1040-8436 http://www.tandfonline.com/doi/pdf/10.1080/10408436.2014.940441 10.1080/10408436.2014.940441
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
language English
topic T Technology (General)
TJ Mechanical engineering and machinery
spellingShingle T Technology (General)
TJ Mechanical engineering and machinery
Al Mahmud, K.A.H.
Kalam, M.A.
Masjuki, Haji Hassan
Mobarak, H.M.
Zulkifli, N.W.M.
An updated overview of diamond-like carbon coating in tribology
description During the last two decades, the industry (including scientists) has focused on diamond-like carbon (DLC) coating because of its wide range of application in various fields. This material has numerous applications in mechanical, electrical, tribological, biomedical, and optical fields. Severe friction and wear in some machine parts consumes high amount of energy, which makes the process energy inefficient. Thus, DLC coating can be an effective means to lower the friction and wear rate. Some important process variables that affect the tribological characteristics of DLC coating are adhesion promoter intermediate layer, substrate surface roughness, hydrogen incorporation or hydrogen non involvement, and coating deposition parameters (e.g., bias voltage, etching, current, precursor gas, time, and substrate temperature). Working condition of DLC-coated parts also affects the tribological characteristics, such as temperature, sliding speed and load, relative humidity, counter surface, and lubrication media (DLC additive interaction). Different types of lubricated oils and additives are used in engine parts to minimize friction and wear. DLC can be coated to the respective engine parts; however, DLC does not behave accordingly after coating because of lubricant oil and additive interaction with DLC. Some additive interacts positively and some behave negatively because of the tribochemical reactions between DLC coating and additives. Numerous conflicting views have been presented by several researchers regarding this coating additive interaction, resulting in unclear determination of true mechanism of such interaction. However, lubricant additive has been established to be more inert to DLC coating compared with uncoated metal surface because the additive is fabricated in such a way that it can react with metal surfaces. In this article, the tribological characteristics of different types of DLC coating in dry and lubricated conditions will be presented, and their behavior will be discussed in relation to working condition and processing parameters.
format Article
author Al Mahmud, K.A.H.
Kalam, M.A.
Masjuki, Haji Hassan
Mobarak, H.M.
Zulkifli, N.W.M.
author_facet Al Mahmud, K.A.H.
Kalam, M.A.
Masjuki, Haji Hassan
Mobarak, H.M.
Zulkifli, N.W.M.
author_sort Al Mahmud, K.A.H.
title An updated overview of diamond-like carbon coating in tribology
title_short An updated overview of diamond-like carbon coating in tribology
title_full An updated overview of diamond-like carbon coating in tribology
title_fullStr An updated overview of diamond-like carbon coating in tribology
title_full_unstemmed An updated overview of diamond-like carbon coating in tribology
title_sort updated overview of diamond-like carbon coating in tribology
publishDate 2015
url http://eprints.um.edu.my/13937/1/An_updated_overview_of_diamond-like_carbon_coating_in_tribology.pdf
http://eprints.um.edu.my/13937/
http://www.tandfonline.com/doi/pdf/10.1080/10408436.2014.940441
_version_ 1643689689165594624
score 13.211869

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