Component, in particular for a valve train system, and method for producing a component of this type

A valve train system component, comprising:

• a substrate;
• a layer system applied at least in parts to the substrate;
• wherein the layer system comprises a friction-reducing and wear-reducing protective layer that forms a component surface, the protective layer has a first sub-layer made of:
• doped tetrahedral amorphous carbon which comprises sp3-hybridized carbon having a mole fraction of greater than 50%,
• oxygen in a concentration in a range from 0.1 at % to 3.0 at %,
• hydrogen in a concentration in a range from 0.1 at % to 15 at %, and
• one or more of the following dopants in a concentration in a range from 0.03 at % to 15 at %:
• chromium, molybdenum, tungsten, silicon, copper, niobium, zirconium, vanadium, nickel, iron, silver, hafnium, fluorine, boron or nitrogen;
• and
• wherein the layer system has an adhesive layer arranged between the substrate and the protective laver, and an intermediate layer arranged between the adhesive layer and the protective layer, the intermediate layer being at least one of a carbide, carbonitride of a metal or transition metal, or a non-metal.