Wetting behavior and interfacial tension of a refrigerant oil in air and refrigerant atmospheres

• Published in: International journal of refrigeration Vol. 107; pp. 225 - 233
• Main Authors: Rausch, Michael Heinrich, Schmidt, Patrick Sebastian, Gall, Thomas Roland, Giraudet, Cédric, Fröba, Andreas Paul
• Format: Journal Article
• Language: English
• Published: Paris Elsevier Ltd 01.11.2019; Elsevier Science Ltd
• Subjects: Atmospheres; Grinding; Grooves; Interfacial bonding; Interfacial tension; Lubricant; Lubricants; Lubricants & lubrication; Lubrifiant; Mouillage; Polyalkylene glycol; Polyalkylène glycol; Pressure; R-134a; Refrigerants; Refrigeration; Solid surfaces; Spreading velocity; Surface tension; Temperature; Temperature dependence; Tension interfaciale; Tetrafluoroethane; Vitesse de propagation; Wettability; Wetting; Tension interfaciale; Spreading velocity; Polyalkylène glycol; R-134a; Wetting; Polyalkylene glycol; Interfacial tension; Mouillage; Vitesse de propagation; Lubrifiant; Lubricant

•New method for characterization of wetting behavior based on spreading velocities.•Increase in spreading velocity of PAG-based lubricant in R-134a atmosphere.•Non-uninform spreading accessible by optical analysis.•Decreasing interfacial tension with increasing R-134a pressure at constant temperatur...