Tribological behaviour of W-alloyed carbon-based coatings in dry and lubricated sliding contact

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F14%3A00225599" target="_blank" >RIV/68407700:21230/14:00225599 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1002/ls.1259" target="_blank" >http://dx.doi.org/10.1002/ls.1259</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/ls.1259" target="_blank" >10.1002/ls.1259</a>

Result language
angličtina
Original language name
Tribological behaviour of W-alloyed carbon-based coatings in dry and lubricated sliding contact
Original language description
Carbon-based coatings with different W contents were deposited by direct current magnetron sputtering in reactive and non-reactive atmospheres. All deposited coatings have compact morphologies with amorphous (tungsten-free) or nanocrystalline structures(tungsten-doped). The latter one was indicated by very broad peaks in X-ray Diffraction spectra in the position of tungsten carbide suggesting W-carbide nanoparticles embedded in an amorphous carbon matrix. The hardness increased from 10 to 15 GPa with increasing W content. The coatings were tribological tested at dry and lubricated conditions with increasing temperature in a coating/steel configuration. In dry sliding, the friction coefficient increases with the increase of the temperature reaching values higher than 1.0. The friction is significantly lower in lubricated contact using three different oils: poly-alpha-olefin, paraffin and olive oil. The olive oil shows promising lubricating properties at the temperature lower than 70 de
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JI - Composite materials
OECD FORD branch
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Project
<a href="/en/project/GAP108%2F10%2F1782" target="_blank" >GAP108/10/1782: Stability of bioactive layered structures in model human body fluids.</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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