Technology

How PVD coatings work

PVD technology

PVD is an abbreviation for Physical Vapour Deposition.

The application of PVD hard material coatings gives the component not only special properties such as brilliant, shiny colours, but also ensures excellent wear protection and a low coefficient of friction. This increases the tool life many times over.

In the PVD process the high-purity solid coating material is dissolved by means of cathodic arc deposition. The supply of reactive gases such as nitrogen causes a bond with the metal vapours and is deposited as a thin, firmly adhering coating on the components.

The coating temperature is normally about 500 °C, but low-temperature processes are also possible for some coatings.