Table 3.

Comparison of hardness values with known ceramic binary systems.

System	H [GPa]	Method	Refs.
Ti-Zr-Mo-C	24–34	Coatings (DC magnetron)	This work
Ti-Nb-C	20–25	Bulk (hot press)	Fides et al. [76]
Ti-Nb-C	26–29	Coatings (laser cladding)	Sun et al. [77]
Ti-Mo-C	8–10	Coatings (RF magnetron)	Koutzaki et al. [7]
Ti-W-C	15–26	Coatings (RF magnetron)	Koutzaki et al. [7]
Ti-Zr-C	26–33	Coatings (DC magnetron)	Pogrebnjak et al. [70]
Ti-Zr-C	14–34	Coatings (DC magnetron)	Rodríguez-Hernández et al. [78]