Consideration of stribeck diagram parameters in the investigation on wear and friction behavior in lubricated sliding

Abstract

This paper deals with an experimental study of both wear and friction responses of lubricated sliding tests, considering both responses in Stribeck diagram. Analyses concerning the wear coefficient by Archard equation were also done. Tests were oil-bath lubricated, performed through a machine with devices for rotating pin-on-disk and reciprocating pin-on-plate tests. Tested specimens were pins of AISI52100 steel and counter-bodies of AISI8640 steel. Presence of additives and contamination in lubricant oil was investigated under two mechanical loading levels, determined by the velocity/load ratio. Wear was studied by means of optical microscope and dimensional analysis of the worn surfaces. The use of a wear coefficient similar to that of Archard equation for characterizing sliding wear behavior is discussed. Differences were observed in the wear trend of the rotating and the reciprocating tests in terms of Stribeck parameters considerations

Tribo-corrosion mechanisms of stainless steel in soft drinks

“…It is possible that corroded metals ions may alter the solution viscosity which will in turn have an effect on the contact friction coefficient. It is also possible that the formation of passive films and corroded surfaces will alter the surface roughness which has been shown to be an important factor in determining the surface friction coefficient [29]. It is impossible to say how corrosion affects solution viscosity at the moment and important further work will be to look at the synergy relationship under more controlled conditions (ie constant pH).…”

Behavior of Ionic Liquids Under Nanoconfinement Greatly Affects Actual Friction

“…For [DEME] [BF 4 ], the sharp viscosity increase began at a clearly shorter distance than that for [DEME][TFSI], indicating that this ammonium salt restructures more readily than the TFSI salt, or in other words, that the BF 4 salt is more easily crystallized. This consideration is also supported by the results of the crystallization temperature measurement using differential thermal calorimetry (DSC) [28]. As indicated by the DSC measurements, [DEME][BF 4 ], for which the viscosity increases at a relatively long distance, shows a distinct crystallization temperature, whereas the TFSI salt only shows a glass transition temperature but not a crystallization temperature.…”

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