Growth kinetics and mechanical properties of boride layers formed at the surface of the ASTM F-75 biomedical alloy

Finally, the mechanical characterization of the cobalt boride layers was evaluated by indentation techniques with applied loads of 0.98 N and 50 mN, respectively. According to the nanoindentation tests, a maximum hardness value (30 GPa) and a maximum Young's modulus (380 GPa) were obtained near the surface region (5 μm) of the borided cobalt alloy.