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Plasma spray can be used to produce coatings. of virtually any metallic, cermet, or ceramic ma-. terial. The coatings are used for most of the types. of applications described in a subsequent section. The transferred plasma-arc process adds to. plasma spray the capability of substrate surface heat-. ing and melting. Figure 7 is a schematic repre-. sentation of the process.
The coating serves multiple purposes, such as enabling medical devices to be implanted into the body with less resistance, due to its biocompatibility. Vapor Deposition Polymerization. The process by which a layer of parylene is effectively applied to a product is called vapor deposition polymerization. The entire process is carried out at room temperature in a closed-system vacuum chamber. First, dimerâa powdery materialâis heated inside a vaporizer.