Laser-Arc Evaporation
for Tribological Coatings

Laser-Arc evaporation is an efficient coating process based on a vacuum arc discharge. The precise control over the timing and location of the discharge enables its use as a linear coating source in larger production equipment. This technology is particularly suitable for the deposition of carbon layers.

Material is removed from the cathode (e.g., carbon) by a pulsed vacuum arc discharge. A laser is used to ignite this discharge, and the position of the discharge is controlled by varying the point of impact of the laser. Very high pulse currents lead to a high proportion of ionized cathode material.

With this technology, tetrahedral-amorphous carbon (ta-C) coatings up to 30 µm can be deposited. To maintain not only the high hardness but also the low coefficients of friction, post-treatment (polishing) of the coatings is recommended. 

Additionally, particle filters can also be integrated between the system and the coating unit. These coatings can be used for a wide variety of tribological applications.

Would you like to learn more? Then click on the content below or contact us directly.

High hardness of the coating

through extremely low hydrogen content

High elasticity (Young's modulus)

through high sp3/sp2 ratio

Suited for sensitive polymer materials

through low coating temperatures down to < 180 °C

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28.02.2024 - 01.03.2024
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