With the help of coatings work pieces obtain specific surfaces properties, the carrier material does not have. Modern surface technology is characterized by a variety of coating methods with a wide range of applications. It begins with a simple coat of paint to embellish a surface and ends with complex systems, e.g. multilayer ceramic on carbide tools, plasma-enhanced deposited from the gas phase.
Each coating process and produced coating layer has to demonstrate, that the used coating technique is suitable. Ultimately, a coating will be successful if its properties are a better and cheaper alternative.