Zirconium nitride is widely used as a coating material due to its exceptional hardness and wear resistance. It is applied in the manufacturing of cutting tools, drills, and end mills to enhance their durability and performance. In the aerospace industry, it serves as a protective layer on turbine blades and other components exposed to high temperatures and corrosive environments. The electronics sector utilizes zirconium nitride in thin-film applications, such as diffusion barriers in semiconductor devices, to prevent unwanted diffusion of metals into silicon. Additionally, it is employed in decorative coatings for watches and jewelry, providing a gold-like appearance with improved scratch resistance. Its biocompatibility also makes it suitable for medical implants and devices.