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For increasing temperatures due to downsizing, materials are pushed beyond their limits. PVD coatings help to extend the limits even further by reducing wear.

Turbo Chargers
Solution Coating material Coating technology Coating hardness HIT [GPa] Coefficient of friction (dry) vs. steel Max. service temp. [°C] Process temperature [°C]
MoN Sputter / Arc 15 – 35 depending on application - 800 -
CrN / a-C:H PACVD ~15-25 0.1 - 0.2 300 < 250

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