Tribological and Surface Enhancement of CP Titanium via PVD-Deposited CrCN Thin Films

Commercially pure titanium (CP Ti) has gained significant attention for biomedical applications due to its favorable strength-to-weight ratio and excellent biocompatibility. Nonetheless, its inherent corrosion resistance remains insufficient for certain functional environments, necessitating surface modifications to enhance its durability. In this context, the present study focused on improving the tribological and surface characteristics of CP Ti by depositing chromium carbonitride (CrCN) films via physical vapor deposition (PVD). The morphological and structural differences between uncoated and coated specimens were analyzed through X-ray diffraction (XRD) and scanning electron microscopy (SEM). Furthermore, a comparative assessment of wear performance was conducted using a pin-on-disk tribometer. The findings revealed that the CrCN-coated samples demonstrated superior wear resistance, which was attributed to their increased surface hardness and reduced roughness compared to the uncoated specimens.