What is DLC coating?
Diamond-like carbon (DLC) coatings are nanocomposite layers that mimic the properties of natural diamond, offering low friction, high hardness, and exceptional corrosion resistance. The structure and performance of DLC coatings depend on the ratio of SP3 (diamond) and SP2 (carbon) bonds, as well as the inclusion of elements like hydrogen, silicon, or metals.
DLC coatings are deposited using techniques like PVD arc, PVD sputtering, and PACVD processes, which can be tailored to produce hydrogenated or non-hydrogenated variants with specific performance characteristics. These coatings are environmentally friendly and help reduce friction, wear, fretting, galling, and corrosion. Additionally, DLC coatings can alter electrical conductivity and wettability.
DLC coatings play important roles specifically in optical components. They offer a perfect blend of aesthetics and performance across various industries, including automotive, aerospace, electronics, and medical devices.