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AssigneeOerlikon Surface Solutions AG, PfäFfikon
InventorsJürgen Becker, Martin Grischke, Astrid Gies
Estimating the term…
The present invention relates to a coating for sliding parts that allows using diamond like carbon (DLC) or DLC-comprising coatings in combination with Molybdenum- and/or Zinc-comprising lubricants in such a manner that enhanced reduction of wear and friction in comparison to the state of the art is attained. The coating system according to the present invention comprises at least a metal-comprising carbon layer of the type Me-C/a)-C:X, whose element composition can be expressed as (MeaC1-a)1-bXb with 0.3≦a≦0.6 and 0<b≦0.3, where Me is a metal or a combination of different metals and X is an element different from Me and different from C or X is a mixture of elements different from Me and which doesn't contain C. Me can be preferably Chromium (Cr) or Molybdenum (Mo) and X can be preferably hydrogen (H) or a mixture of silicon and hydrogen (Si+H).
A sliding component for tribological contact under lubricated conditions, the sliding component comprising a coating at least partially in contact with a fluid lubricant, the coating being a metal doping modified DLC coating and comprising one or more function layers having an element composition of (MeaC1-a)1-bXb, 0.3=<a=<0.6, 0<b=<0.3, a being the atomic fraction of Me if only Me and C are considered for the element composition, b being the atomic fraction of X if Me, C, and X are considered for the element composition, Me consisting of materials selected from the group consisting of chromium, molybdenum, and a mixture of two or more metals consisting essentially of one of chromium and molybdenum, C being carbon, X consisting of materials selected from the group consisting of hydrogen, silicon, nitrogen, boron, and a mixture of elements consisting essentially of one or more of the group consisting of hydrogen, silicon, nitrogen, and boron, the fluid lubricant comprising one of molybdenum, zinc, and a combination thereof,
Dependencies are inferred from the claim text.