Please use this identifier to cite or link to this item: doi:10.22028/D291-27824
Title: Influence of Surface Roughness on the Lubrication Effect of Carbon Nanoparticle-Coated Steel Surfaces
Author(s): Reinert, Leander
Schütz, Silas
Suárez, Sebastian
Mücklich, Frank
Language: English
Title: Tribology Letters
Volume: 66
Issue: 1
Pages: 45
Publisher/Platform: Springer
Year of Publication: 2018
Free key words: Solid lubrication
Carbon nanotubes
Onion-like carbon
Lubrication mechanisms
Surface roughness
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: In the present study, a systematic evaluation of the influence of the surface roughness on the lubrication activity of multiwall carbon nanotubes (MWCNT) and onion-like carbon (OLC) is performed. MWCNT and OLC are chosen as they both present an sp2-hybridization of carbon atoms, show a similar layered atomic structure, and exhibit the potential to roll on top of a surface. However, their morphology (size and aspect ratio) clearly differs, allowing for a methodical study of these differences on the lubrication effect on systematically varied surface roughness. Stainless steel platelets with different surface finishing were produced and coated by electrophoretic deposition with OLC or MWCNT. The frictional behavior is recorded using a ball-on-disk tribometer, and the resulting wear tracks are analyzed by scanning electron microscopy in order to reveal the acting tribological mechanisms. It is found that the lubrication mechanism of both types of particles is traced back to a mixture between a rolling motion on the surfaces and particle degradation, including the formation of nanocrystalline graphitic layers. This investigation further highlights that choosing the suitable surface finish for a tribological application is crucial for achieving beneficial tribological effects of carbon nanoparticle lubricated surfaces.
DOI of the first publication: 10.1007/s11249-018-1001-6
Link to this record: urn:nbn:de:bsz:291--ds-278246
ISSN: 1573-2711
Date of registration: 11-Apr-2019
Sponsorship ID: EU-Rise project Creat Network 644013
EU-Projectnumber: info:eu-repo/grantAgreement/EC/H2020/644013/EU//createE-Network
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Materialwissenschaft und Werkstofftechnik
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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