US 12,292,119 B2
Sliding element, in particular piston ring
Gregor Englberger, Dresden (DE); Marcus Kennedy, Dusseldorf (DE); and Yuriy Ivanov, Burscheid (DE)
Assigned to FEDERAL-MOGUL BURSCHEID GMBH, Burscheid (DE)
Appl. No. 18/245,620
Filed by FEDERAL-MOGUL BURSCHEID GMBH, Burscheid (DE)
PCT Filed Sep. 10, 2021, PCT No. PCT/EP2021/074986
§ 371(c)(1), (2) Date Mar. 16, 2023,
PCT Pub. No. WO2022/058249, PCT Pub. Date Mar. 24, 2022.
Claims priority of application No. 10 2020 124 180.1 (DE), filed on Sep. 16, 2020.
Prior Publication US 2023/0332686 A1, Oct. 19, 2023
Int. Cl. F16J 9/26 (2006.01)
CPC F16J 9/26 (2013.01) 17 Claims
 
1. A sliding element with a coating having the following layers from the inside to the outside:
an adhesive layer
a carbon-containing functional layer, and
an outer amorphous DLC layer,
wherein the layer thickness of the carbon-containing functional layer is at least 70%, of the total layer thickness of the coating, and
the Young's modulus ratio of carbon-containing functional layer to outer amorphous DLC layer is 1.2 or more.