Titanium aluminium nitride

Four important compositions (metal content 100 wt.%) are deposited in industrial scale by physical vapor deposition methods: The fundamental reasons why TiAlN coatings outperform pure Titanium nitride (TiN) coatings are considered to be: The age hardening phenomenon has been shown to originate in a mismatch in the quantum mechanical electronic structure of TiN and AlN.

Selected properties of Al66Ti34N are: One commercial coating type used to improve the wear resistance of tungsten carbide tools is the AlTiN-Saturn from Sulzer Metaplas.

[6] The coatings are sometimes doped with at least one of the elements carbon, silicon, boron, oxygen and yttrium in order to improve selected properties for specific applications.

One derivative of TiAlN coating technology is the nanocomposite TiAlSiN (titanium aluminium silicon nitride) which was developed by SHM in the Czech Republic and now marketed by Platit of Switzerland.

The nanocomposite TiAlSiN coating exhibits superhard hardness and outstanding high temperature workability.