In the present study, PA6 polymers with and without solid lubricant inclusions were\ninvestigated against S1100QL steel surfaces that had different surface roughness values-a very\nhigh surface roughness (Rz approximately equal to 40 micron) and a low surface roughness (Rz approximately equal to 5 micron). Static and dynamic\nfriction coefficients were analysed under a series of nominal contact pressures (2.5 to 40 N/mm2)\nconsidering the influences of polymer water saturation, temperature, counter-body surface roughness\nand lubrication. Mechanisms for the observed influences of the respective parameters are provided\nand are interpreted from the view of the adhesive and deformative contributions to the friction force.
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