Aqueous Solutions of Surfactants in Materials Engineering of Tribological Systems

Abstract ..................................................................................................................240 10.1 Introduction ..................................................................................................240 10.2 Solutions of Surfactants as Model Lubricating Substances .......................... 241 10.3 Physicochemical Characteristics of Cationic and Amphoteric Surface-

Active Compounds........................................................................................242 10.3.1 Cationic Surface-Active Compounds ............................................... 243 10.3.2 Amphoteric Surface-Active Compounds .......................................... 243 10.3.3 Surface Activity of Amphiphilic Compounds ..................................244 10.3.4 Surface Tension .................................................................................244