Influence of the Initial Roughness of the Antifriction Carbon Plastic Surface on Tribotechnical Characteristics and Efficiency of the Running-in Coating

The influence of roughness of the friction surface of antifriction carbon plastics used in sliding friction units lubricated with water on tribotechnical characteristics during the running-in process was studied. The range of the surface roughness optimum in terms of tribotechnical efficiency formed upon edge cutting machining of carbon plastics was experimentally established. The results of a series of tribotechnical tests using various methods under various conditions (contact pressure, sliding speed, counterface materials) are presented. The relationship between the initial roughness and efficiency of a running-in coating based on a FORUM® polytetrafluoroethylene powder is established.