
Coating Processes
The purpose of applying a coating may be decorative, functional, or both. The coating itself may be an all-over coating, completely covering the substrate, or it may only cover parts of the substrate. Functional coatings may be applied to change the surface properties of the substrate, such as adhesion, wetability, corrosion resistance, or wear resistance. In other cases, e.g. semiconductor device fabrication, the coating adds a completely new property such as a magnetic response or electrical conductivity and forms an essential part of the finished product. A major consideration for most coating processes is that the coating is to be applied at a controlled thickness, and a number of different processes are in use to achieve this control, ranging from a simple brush for painting a wall, to some very expensive machinery applying coatings in the electronics industry. Through our up-to-date machinery we can offer to the client four different coatings processes: metallization, thermal spraying, plasma spraying, and HVOF. Common to each process is the aim of improving the surface properties of the substrate. Materials used as a coating:
- Carbides
- Ceramics
- Metals
- Stellite Alloys