Polyamide (PA6/6) is often used as a tribological pair in abrasion prevalent applications such as hinges and sliders. PA6/6 is\nfrequently processed by injection moulding and extrusion process. It is known that these processes influence the polymers\nmechanical behaviour, but their influence on the polymers wear response has not been studied.Hence the present research attempts\nto study the influence of differentmanufacturing processes on tribological behaviour for PA6/6.Wear tests were performed on a pin\nabrading tester (DIN 50322). Abrasion resistance of both extruded and injection moulded PA6/6 were tested at different loads (20\nand 35N). Single-pass (nonoverlapping mode) and multipass testing (overlapping mode) were used to understand the influence of\nclogging of wear debris. It is evidenced that with increasing load the specific wear rate decreases; moreover, fine abrasives tend to\nreduce the wear rate. Inmultipass testing a transfer layer clogged on the counterface that acted as a protective agent and lowers wear\nrate. Poor mechanical strength of injection moulded polymers is apparently compensated by microstructural response for having\na similar wear behaviour between extruded and injection moulded PA 6/6. Hence a proper balance between microstructural and\nmechanical characteristics is an absolute must in PA 6/6 for better wear performance.
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