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Reactive biased target ion beam deposited W-DLC nanocomposite thin films - Microstructure and its mechanical properties

Bharathy, P. Vijai; Yang, Q.; Mangalampalli, S.R.N. Kiran; Rha, Jongloo; Nataraj, D.; Mangalaraj, D.

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Tungsten incorporated diamond like carbon (W-DLC) nanocomposite thin films with variable fractions of tungsten were deposited by using reactive biased target ion beam deposition technique. The influence of tungsten incorporation on the microstructure, surface topography, mechanical and tribological properties of the DLC were studied using X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, Atomic force microscope (AFM), transmission electron microscopy (TEM), nano-indentation and...[Show more]

dc.contributor.authorBharathy, P. Vijai
dc.contributor.authorYang, Q.
dc.contributor.authorMangalampalli, S.R.N. Kiran
dc.contributor.authorRha, Jongloo
dc.contributor.authorNataraj, D.
dc.contributor.authorMangalaraj, D.
dc.date.accessioned2015-12-10T23:22:20Z
dc.identifier.issn0925-9635
dc.identifier.urihttp://hdl.handle.net/1885/66476
dc.description.abstractTungsten incorporated diamond like carbon (W-DLC) nanocomposite thin films with variable fractions of tungsten were deposited by using reactive biased target ion beam deposition technique. The influence of tungsten incorporation on the microstructure, surface topography, mechanical and tribological properties of the DLC were studied using X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, Atomic force microscope (AFM), transmission electron microscopy (TEM), nano-indentation and nano-scratch tests. The amount of W in films gets increases with increasing target bias voltage and most of the incorporated W reacts with carbon to form WC nanoclusters. Using TEM and FFT pattern, it was found that spherical shaped WC nanoclusters were uniformly dispersed in the DLC matrix and attains hexagonal (W2C) crystalline structure at higher W concentration. On the other hand, the incorporation of tungsten led to increase the formation of C-sp2 hybridized bonding in DLC network and which is reflected in the hardness and elastic modulus of W-DLC films. Moreover, W-DLC films show very low friction coefficient and increased adhesion to the substrate than the DLC film, which could be closely related to its unique nanostructure of the W incorporated thin films.
dc.publisherElsevier
dc.sourceDiamond and Related Materials
dc.subjectKeywords: Atomic force microscope (AFM); Crystalline structure; Diamond like carbon; DLC film; Hardness and elastic modulus; Ion beam deposition technique; Low friction coefficients; Mechanical and tribological properties; Nano-scratch; Nanocomposite thin films; Re Diamond like carbon; Mechanical properties; Reactive biased target ion beam deposition; Tungsten; XPS
dc.titleReactive biased target ion beam deposited W-DLC nanocomposite thin films - Microstructure and its mechanical properties
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume23
dc.date.issued2012
local.identifier.absfor020406 - Surfaces and Structural Properties of Condensed Matter
local.identifier.ariespublicationU3488905xPUB1290
local.type.statusPublished Version
local.contributor.affiliationBharathy, P. Vijai, Bharathiar University,
local.contributor.affiliationYang, Q., University of Saskatchewan
local.contributor.affiliationMangalampalli, S.R.N. Kiran, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationRha, Jongloo, Korea Institute of Material Science,
local.contributor.affiliationNataraj, D., Bharathiar University
local.contributor.affiliationMangalaraj, D., Bharathiar University
local.description.embargo2037-12-31
local.bibliographicCitation.startpage34
local.bibliographicCitation.lastpage43
local.identifier.doi10.1016/j.diamond.2011.12.016
dc.date.updated2016-02-24T09:58:37Z
local.identifier.scopusID2-s2.0-84857014294
CollectionsANU Research Publications

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