Titanium Nitride (TiN) is a widely utilized metal layer coating known for its exceptional hardness, wear resistance, and decorative appeal. Employed in various applications ranging from cutting tools to decorative finishes, TiN coatings are designed to enhance surface durability and performance. By reducing friction, minimizing wear, and providing resistance to corrosion, TiN coatings significantly extend the lifespan of tools and components, thus improving operational efficiency and reducing maintenance costs. Additionally, the distinctive gold-colored appearance of TiN coatings adds aesthetic value to products, making them popular in decorative applications such as jewelry, watches, and architectural finishes. With its versatility and reliability, TiN coating remains a staple choice across industries including automotive, aerospace, electronics, and general manufacturing, where robust performance and visual appeal are essential.