About: Ultra-low friction W-S-N solid lubricant coating

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	W-S-N films were deposited by reactive magnetron sputtering from WS2 target in Ar/N2 atmosphere. Besides the standard evaluation of composition, structure, morphology, hardness and cohesion/adhesion, the core objective of this paper was to analyze coating tribological behavior. The chemical composition was 34 at.% N, 12 at.% O, 29 at.% W and 25 at.% S, and the as-deposited films were completely amorphous. The film thickness was 2.3 μm, including the approximately 300-nm thick adhesion improving titanium interlayer. The friction coefficient was lower than 0.003 when sliding in dry nitrogen. The coating showed remarkable wear resistance surviving more than 2 million laps on pin-on-dics. The excellent friction properties were attributed to the formation of a thin tungsten disulfide tribofilm on the top of the wear track of the coating and on the counterpart surface. Moreover, the coating showed ability to replenish damaged areas with solid lubricant. We demonstrated that a structural transformation of the coating from an amorphous-like to a gradient quasi-ordered structure and an ordered transfer layer formation improved mechanical properties and radically decreased friction and wear. W-S-N films were deposited by reactive magnetron sputtering from WS2 target in Ar/N2 atmosphere. Besides the standard evaluation of composition, structure, morphology, hardness and cohesion/adhesion, the core objective of this paper was to analyze coating tribological behavior. The chemical composition was 34 at.% N, 12 at.% O, 29 at.% W and 25 at.% S, and the as-deposited films were completely amorphous. The film thickness was 2.3 μm, including the approximately 300-nm thick adhesion improving titanium interlayer. The friction coefficient was lower than 0.003 when sliding in dry nitrogen. The coating showed remarkable wear resistance surviving more than 2 million laps on pin-on-dics. The excellent friction properties were attributed to the formation of a thin tungsten disulfide tribofilm on the top of the wear track of the coating and on the counterpart surface. Moreover, the coating showed ability to replenish damaged areas with solid lubricant. We demonstrated that a structural transformation of the coating from an amorphous-like to a gradient quasi-ordered structure and an ordered transfer layer formation improved mechanical properties and radically decreased friction and wear. (en)
Title	Ultra-low friction W-S-N solid lubricant coating Ultra-low friction W-S-N solid lubricant coating (en)
skos:prefLabel	Ultra-low friction W-S-N solid lubricant coating Ultra-low friction W-S-N solid lubricant coating (en)
skos:notation	RIV/68407700:21230/13:00206619!RIV14-GA0-21230___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GAP108/10/0218)
http://linked.open...iv/cisloPeriodika	October
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Polcar, Tomáš
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta elektrotechnická
http://linked.open...dnocenehoVysledku	112460
http://linked.open...ai/riv/idVysledku	RIV/68407700:21230/13:00206619
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Tungsten disulfide; Ultra-low friction; Self-lubricant; Coating; Magnetron sputtering (en)
http://linked.open.../riv/klicoveSlovo	Coating Magnetron sputtering Self-lubricant Tungsten disulfide Ultra-low friction
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[5F6DF1D2F4AE]
http://linked.open...i/riv/nazevZdroje	Surface and Coatings Technology
http://linked.open...in/vavai/riv/obor	JI
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Advanced self-adaptive low friction coatings based on transition metal dichalcogenides alloyed with carbon
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	232
http://linked.open...iv/tvurceVysledku	Cavaleiro, A. Polcar, Tomáš Gustavsson, F. Jacobson, S.
http://linked.open...ain/vavai/riv/wos	000327691300072
issn	0257-8972
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.surfcoat.2013.06.026
http://localhost/t...ganizacniJednotka	21230

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