CoCrMo-based alloys are advanced metallic biomaterials widely employed in implantable medical devices, including dental implants as well as total hip and knee arthroplasties. The integration of cobalt with chromium and molybdenum yields a biphasic microstructure exhibiting superior mechanical strength, adequate toughness, and excellent fatigue resistance. Elevated chromium content promotes the development of a thin, stable passive oxide layer, which provides robust corrosion resistance in bodily fluids and enhances biocompatibility indirectly by minimizing metallic ion release. Nevertheless, tribo-corrosion within, coupled with potential liberation of Co/Cr particles and ions, poses significant challenges linked to localized inflammatory responses and the risk of aseptic implant loosening. Contemporary research strategies emphasize microstructural refinement via thermal treatments and additive manufacturing techniques, alongside surface modifications and microalloying (e.g., with Cu) to boost osseointegration, antibacterial performance, and longterm durability of CoCrMo implants. This study investigates the potential of alloying with Ag to further augment antiseptic properties.
Keywords: biomaterials, CoCrMo alloys, medical applications, microstructural and mechanical properties.