The two types of PVD (Physical Vapor Deposition) are occlusive and functional.
Occlusive PVD involves creating a very thin layer of material through the process of physical vapor deposition. It is a broad technique that encompasses various specific techniques. The goal of occlusive PVD is to create a barrier or seal on the surface of a material. This type of PVD coating is commonly used for applications where corrosion resistance, wear resistance, or chemical resistance is required.
Functional PVD, on the other hand, also involves creating a thin layer of material through physical vapor deposition. However, the purpose of functional PVD is to enhance the functionality or performance of the material. This can include improving its hardness, lubricity, or optical properties. Functional PVD coatings are commonly used in industries such as automotive, aerospace, and electronics.
It is important to note that PVD and CVD (Chemical Vapor Deposition) are two different methods of applying coatings to the surface of a material. PVD is based on physical vapor deposition, while CVD is based on chemical vapor deposition. The materials they can deposit, the conditions under which they are applied, and the properties of the coatings they produce can differ.
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