Scratch Resistance

Usually materials with a big hardness are characterized by a good scratch resistance against subjects made from materials od lower hardness. An exception are soft elastic materials which are scratch resistant because they are able to rebound elastically after beeing deformed by objects of bigger hardness.

Scratch resistance of non elastic materials can be improved by plasma coating the surface with scratch resistant layers. A prefered method is coating with DLC (Diamond Like Carbon) layers by CVD / PACVD techniques.



DLC Layers
Even plastics can be treated scratch resistant with CLC-layers.