PVD (Physical Vapour Deposition) coatings are thin layer ceramic compounds, typically just a few microns thick, which are deposited on the surface of the material at a temperature of 200ºC to 450ºC.
Vacuum offers arc evaporation and electron beam PVD, two technologies with different characteristics, each suited to different applications.
In most cases, parts must be heat treated before undergoing PVD.
The process is used for coating:
- Tool steels;
- Stainless steels;
- High speed steels;
- Complex geometry applications
- Excellent resistance to wear and abrasion
- Reduced coefficient of friction
- Very high surface hardness
- Resistance to hot oxidation
- Non-porous barriers for improved corrosion resistance
- Increased assembly force
- Pre-grinding not required
- Increased resistance to thermal cycles and shock
- Electrical resistivity