Patent ID: 9631270
Date: 2017-04-25
CPC Classifications: C23C,Y10T

Claim:
1. A multi-layer coating having carbon as the main component, wherein the carbon in the coating is mostly present in sp 2 -hybridized form, the coating comprising: at least one first element selected from a first group consisting of the transition metals from groups 3 to 10 (new IUPAC nomenclature) of the periodic table of the elements, and at least one further element from a further group consisting of silicon, germanium, aluminum and the transition metals from groups 3 to 10 (new IUPAC nomenclature) of the periodic table of the elements, with the proviso that the at least one further element is not the same as the first element, wherein the cumulative fraction of this at least one further element in the coating is between 0.1 at % and 5 at % and the cumulative fraction of the at least one first element is between 0.5 at % and 10 at %, wherein the coating is formed by a layer system comprising individual layers of different compositions directly deposited on one another, wherein: