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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemistry
Characteristics and tribological performance of DLC and Si-DLC films deposited on nitrile rubber
Surface and Coatings Technology, Volume 206, No. 22, Year 2012
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Description
The characteristics and tribological performance of DLC and Si-DLC films with and without Si-C interlayers were studied in this paper. The films were deposited on nitrile rubber using a closed field unbalanced magnetron sputtering ion plating system. The film properties and characteristics were determined by scanning electron microscopy (SEM), hydrophobicity studies, Raman spectroscopy and tribological investigations. Tribological performance of these films was investigated using a pin-on-disc tribometer under applied loads of 1N and 5N under conditions of dry and wet sliding. The effect of immersing the films in water on tribological performance was also examined. The results show that the morphology of the films had a crack-like network. At a substrate bias of -30V, the coatings were characterised by a very dense non-columnar microstructure. The highest value of the ratio of intensities of the D and G peaks (I D/I G) was 1.2 for Si-DLC film with Si-C interlayer. The lowest value of 0.7 was observed for DLC film. The contact angle (CA) of water droplets showed that the films were hydrophobic. These results are interpreted in terms of hybridisation of carbon in these coatings. The tribological investigation showed a dependence on both the tribological condition under investigation and the atomic percentage of Si in the films. At 5N normal load the lowest wear depth was observed for DLC films. © 2012 Elsevier B.V.
Authors & Co-Authors
Lubwama, Michael
Ireland, Dublin
Dublin City University
McDonnell, K. A.
Ireland, Dublin
University College Dublin
Kirabira, John Baptist
Uganda, Kampala
Makerere University
Sebbit, Adam M.
Uganda, Kampala
Makerere University
Sayers, K.
Ireland, Dundalk
Dundalk Institute of Technology
Dowling, D.
Ireland, Dublin
University College Dublin
Corcoran, B.
Ireland, Dublin
Dublin City University
Statistics
Citations: 47
Authors: 7
Affiliations: 4
Identifiers
Doi:
10.1016/j.surfcoat.2012.05.015
ISSN:
02578972
Research Areas
Environmental