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Frictional properties of self-adaptive chromium doped tungsten-sulfur-carbon coatings at nanoscale

Frictional properties of self-adaptive chromium doped tungsten-sulfur-carbon coatings at nanoscale
Frictional properties of self-adaptive chromium doped tungsten-sulfur-carbon coatings at nanoscale
Transition metal dichalcogenides (TMD) are excellent dry lubricants forming thin (?10 nm) tribolayer that simultaneously protects the coating from environmental attack and provides low friction. In this paper, we focus on nanoscale frictional properties of chromium doped tungsten–sulfur–carbon (WSC–Cr) coatings with various Cr content. Friction force microscopy was used to investigate friction force as a function of load. A non-linear contact area dependence on the normal force was observed. The calculated interfacial shear strength was relatively low in the region of 70–99 MPa. Friction coefficient decreased with increased applied load independently of chromium content in the coatings.

0169-4332
381-387
Zekonyte, Jurgita
c40df725-5ce3-4692-b638-bbb4d847b5ea
Cavaleiro, A.
114e42eb-7255-47ef-834d-0546d56d3171
Polcar, T.
c669b663-3ba9-4e7b-9f97-8ef5655ac6d2
Zekonyte, Jurgita
c40df725-5ce3-4692-b638-bbb4d847b5ea
Cavaleiro, A.
114e42eb-7255-47ef-834d-0546d56d3171
Polcar, T.
c669b663-3ba9-4e7b-9f97-8ef5655ac6d2

Zekonyte, Jurgita, Cavaleiro, A. and Polcar, T. (2014) Frictional properties of self-adaptive chromium doped tungsten-sulfur-carbon coatings at nanoscale. Applied Surface Science, 303, 381-387. (doi:10.1016/j.apsusc.2014.03.010).

Record type: Article

Abstract

Transition metal dichalcogenides (TMD) are excellent dry lubricants forming thin (?10 nm) tribolayer that simultaneously protects the coating from environmental attack and provides low friction. In this paper, we focus on nanoscale frictional properties of chromium doped tungsten–sulfur–carbon (WSC–Cr) coatings with various Cr content. Friction force microscopy was used to investigate friction force as a function of load. A non-linear contact area dependence on the normal force was observed. The calculated interfacial shear strength was relatively low in the region of 70–99 MPa. Friction coefficient decreased with increased applied load independently of chromium content in the coatings.

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More information

Published date: 2014
Organisations: Engineering Science Unit, nCATS Group

Identifiers

Local EPrints ID: 363092
URI: http://eprints.soton.ac.uk/id/eprint/363092
ISSN: 0169-4332
PURE UUID: 8ad5c7ee-d0f3-4731-b95b-b8549abfd2ef
ORCID for T. Polcar: ORCID iD orcid.org/0000-0002-0863-6287

Catalogue record

Date deposited: 27 Mar 2014 14:45
Last modified: 15 Mar 2024 03:40

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Contributors

Author: Jurgita Zekonyte
Author: A. Cavaleiro
Author: T. Polcar ORCID iD

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