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Statements

Subject Item
n2:RIV%2F68407700%3A21230%2F13%3A00206619%21RIV14-GA0-21230___
rdf:type
n8:Vysledek skos:Concept
dcterms: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.
dcterms:title
Ultra-low friction W-S-N solid lubricant coating Ultra-low friction W-S-N solid lubricant coating
skos:prefLabel
Ultra-low friction W-S-N solid lubricant coating Ultra-low friction W-S-N solid lubricant coating
skos:notation
RIV/68407700:21230/13:00206619!RIV14-GA0-21230___
n8:predkladatel
n9:orjk%3A21230
n4:aktivita
n5:P
n4:aktivity
P(GAP108/10/0218)
n4:cisloPeriodika
October
n4:dodaniDat
n13:2014
n4:domaciTvurceVysledku
n20:8570256
n4:druhVysledku
n6:J
n4:duvernostUdaju
n19:S
n4:entitaPredkladatele
n12:predkladatel
n4:idSjednocenehoVysledku
112460
n4:idVysledku
RIV/68407700:21230/13:00206619
n4:jazykVysledku
n10:eng
n4:klicovaSlova
Tungsten disulfide; Ultra-low friction; Self-lubricant; Coating; Magnetron sputtering
n4:klicoveSlovo
n7:Self-lubricant n7:Magnetron%20sputtering n7:Ultra-low%20friction n7:Coating n7:Tungsten%20disulfide
n4:kodStatuVydavatele
NL - Nizozemsko
n4:kontrolniKodProRIV
[5F6DF1D2F4AE]
n4:nazevZdroje
Surface and Coatings Technology
n4:obor
n18:JI
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
4
n4:projekt
n15:GAP108%2F10%2F0218
n4:rokUplatneniVysledku
n13:2013
n4:svazekPeriodika
232
n4:tvurceVysledku
Cavaleiro, A. Jacobson, S. Gustavsson, F. Polcar, Tomáš
n4:wos
000327691300072
s:issn
0257-8972
s:numberOfPages
8
n11:doi
10.1016/j.surfcoat.2013.06.026
n17:organizacniJednotka
21230