Direct growth of graphene on CoCrMo alloy by double-tube chemical vapor deposition

Graphene has attracted significant interest due to its unique properties and potential applications. In particular, graphene has sparked much attention in biomedical field due to its outstanding biocompatibility. Here we report on optimized double-tube chemical vapor deposition (DT-CVD) technique that was employed to facilitate the direct controlled growth of graphene on a cobalt-chromium-molybdenum (CoCrMo) alloy surface and tested its wear and corrosion resistance. In this study, we also explore the propose our hypothesis for the underlying growth mechanism. The number of layers and crystallinity of graphene grown on a CoCrMo alloy substrates were confirmed by Raman spectroscopy. The effect of the DT-CVD process on the microstructure and the morphology of the CoCrMo alloy surface was investigated by atomic force microscopy (AFM), scanning electron microscopy (SEM), X-ray photoelectron microscope (XPS), and X-ray diffraction (XRD). In addition, we verified the mechanical toughness of as-grown graphene on CoCrMo. Our new results demonstrate an alternative and potentially improved coating technology for graphene’s implementation into medical fields such as coating for devices, probes and implants.