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Journal article

Scratch resistance and tribological properties of DLC coatings under dry and lubrication conditions

By Sharma, Neha; Kumar, N.; Dash, S.; Das, C.R.; Subba Rao, R.V.; Tyagi, A.K.; Raj, Baldev

From

Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, TN, India

Scratch resistance and tribological properties of hydrogenated and hydrogen free diamond like carbon (DLC) coatings were investigated in ambient atmosphere under unlubricated and lubricated conditions using layers of oleic (C18H34O2) and linoleic acid (C18H32O2). Scratch resistance property improved in hydrogenated DLC while using linoelic and oleic acids compared to unlubricated condition.

Coefficient of friction (CoF) was found to decrease under ambient dry conditions, while under lubrication condition, it was found to increase with normal load. At low load of 1N, hydrogenated and hydrogen-free coatings show a super low CoF of 0.001 and high wear resistance with oleic acid.

Language: English
Year: 2012
Pages: 129-140
ISSN: 18792464 and 0301679x
Types: Journal article
DOI: 10.1016/j.triboint.2012.06.020
Keywords

DLC coatings Fatty acid Friction coefficient Scratch resistance

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