DLC
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Catalog excerpts

plasma coating

Substrat Substrat The advantages of our PECVD - process • low deposition temperature • easy masking of parts • integrated cleaning of the parts • de-coating is possible in the same plasma system • 3D - coating possible • Very environment friendly technology structure of graphite structure of diamond What are carbon layers? Carbon has different modifications. As graphite it is very soft and black. Diamond, however, is the hardest material we know. Carbon layers combine a mixture of these both characteristics. Due to that the structure is amorphous. DLC layers have a...

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Friction mechanism The outstanding tribological behaviour of DLC coatings depend on different effects of interaction between coating and surface. 1. Graphitization: During the run-in phase small particles of graphite are detached from the surface. These particles act as an interlayer between the friction partners. 2. Transfer film: The graphite film transfers to the friction partner which smoothens the surface roughness. 3. Passivation: Open chemical bonds on the surface become bound with OH - groups. Therefore the surface gets passivated. + Protection against adhesive wear and...

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