Diamond-like carbon (DLC) can be used as a tribological coatings in mechani
cal engineering to reduce friction and wear. As well as the amorphous carbo
n nitride system (CNx), it is also interesting for various applications in
the hard-disk and microsystems industries. Here, examples of the influence
of film thickness and substrate on the mechanical and tribological properti
es of thin CNx and DLC films in the low-load regime are analyzed and discus
sed.