Low hardness on AlTiN Coating
02-05-2021, 02:32 PM,
Lightbulb  Low hardness on AlTiN Coating
Hello everyone,

we have an issue with one of our PVD coatings: AlTiN.
In literature and on PVD suppliers websites you can see that AlTiN coatings can reach hardness around 3000-3500 HV (~30-35 GPa), but our coating has a hardness around 1500-1800 HV, does anyone have any idea why?

Some info:
-Target: AlTi 67/33 at%
-Deposition method: cathodic arc

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