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XPS and AES characterization of tribofilms of MoS [sub] 2 nanotubes on steel and DLC-coated surfacesKovač, Janez, 1965- ...Good tribological properties can be achieved by solid-lubricant nanoparticles as additives in oil. For this reason they are strong candidates for use in the lubrication of diamond-like carbon (DLC) ... coatings, which only poorly interact with the traditional, chemically based additives. Using surface sensitive techniq ues like X-ray photoelectron spectroscopy - XPS and Auger electron spectroscopy - AES we studied formation of tribofilm formed from MoS2 nanotubes on steel and DLC-coated surfaces. We showed that when using oil containing MoS2 nanoparticles the formation of a tribofilm is a key factor in decreasing the friction for the steel and DLC-coated contacts. The major difference between the steel and the DLC contacts is the extent to which the MoS2 - based tribofilm covers the surface. AES depth profiling on samples in the wear-track and out of the wear-track indicates that the layer of adhered MoS2 for the steel and DLC samples is thicker on the wear track than outside of the wear-track region. XPS spectra of Mo 3d, S 2p and O 1s show that the MoS2 -based tribofilm was more oxidized on the DLC surface than on the steel surface. Nevertheless, we found that the chemical and functional properties of the MoS2 -based tribofilm are very similar, or even the same, for both the steel and DLC-coated surfaces. No direct evidence of any chemical reactions between the MoS2 and the steel or DLC coating was observed.Source: Programme schedule and book of abstracts (Str. 84)Type of material - conference contributionPublish date - 2014Language - englishCOBISS.SI-ID - 13643803
Author
Kovač, Janez, 1965- |
Kalin, Mitjan |
Kogovšek, Janez, 1984- |
Remškar, Maja, 1960-
Topics
nanocevke |
tribofilm |
jeklo |
olje |
MoS2 nanotubes |
tribofilm |
XPS |
AES |
DLC |
steel |
oil
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Kovač, Janez, 1965- | 15703 |
Kalin, Mitjan | 14556 |
Kogovšek, Janez, 1984- | 32070 |
Remškar, Maja, 1960- | 07560 |
Source: Personal bibliographies
and: SICRIS
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