Tantalum nitride is widely used in the semiconductor industry as a diffusion barrier in integrated circuits, preventing copper from migrating into silicon layers. It is also employed in thin-film resistors due to its excellent thermal stability and resistance to oxidation. In the field of coatings, tantalum nitride is applied to cutting tools and mechanical parts to enhance wear resistance and extend their lifespan. Additionally, it is utilized in optical coatings for its ability to improve durability and performance in harsh environments. Its biocompatibility makes it suitable for medical implants, where it provides corrosion resistance and long-term stability.