论文部分内容阅读
Both ASTM F138 and F1586 medical grade austenitic stainless steels have been widely used for joint prostheses and medical devices because of their low-cost,good formability and adequate biocompatibility.However,their wider applications are limited by their low wear resistance and relatively poor corrosion resistance for long-term applications.A novel low temperature plasma alloying technique that simultaneously introduces both nitrogen and carbon into the surface of austenitic stainless steels can successfully create a very hard and corrosion resistant diffused layer (i.e.hybrid C-N S-phase) on these alloys.In order to identify the optimum treatment conditions and to achieve combined improvements in wear and corrosion resistance,a series of surface treatments at different temperatures were carried out on ASTM F138 and ASTM F1586 together with the engineering grade AlSl 316 for comparison.The surface structure and chemical compositions were analysed using GDOES and XRD.