Patent ID: 8161925

Claim:
A valve drive for an internal combustion engine, having a gas exchange valve and having a valve actuating element which has a contact face for an end face on a valve shank of the gas exchange valve which is actuated in the opening and closing direction by the valve actuating element, wherein the contact face and/or the end face is provided with a wear prevention layer which is composed of at least one metal-free amorphous hydrocarbon layer with sp 2 and sp 3 hybridized carbon, and wherein the amorphous hydrocarbon layer has a hydrogen proportion of a maximum of 16 atom %, wherein at least one adhesion-promoting layer and/or at least one intermediate layer is provided under the amorphous hydrocarbon layer, and wherein the at least one intermediate layer is formed as a metal-containing hydrocarbon layer, whose metal components are composed of W, Ti, Hf, or Ge or a combination thereof, and has a thickness of approximately 0.5 μm to 2.0 μm.