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Valves

Customer Challenge:
Soot deposition on sealing areas of the valve resulting in reduced compression and lower efficiency.

Oerlikon Solution:
Applying CrN coating to prevent adhesions on the surface/sealing area, ensuring high engine efficiency and reliability.

Solution Coating material Coating technology Coating hardness HIT [GPa] Coefficient of friction (dry) vs. steel Max. service temp. [°C] Process temperature [°C]
CrN Sputter 18 +/-3 ~0.5 700 < 250
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CrN / a-C:H PACVD ~15-25 0.1 - 0.2 300 < 250
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