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.
wear; friction; paraffin oil; abrasive contaminant; rotating movement; reciprocating movement; mechanical loading; mixed lubrication
