Method for coating a sliding element and sliding element, in particular a piston ring or cylinder liner of an internal combustion engine
AssigneeFederal-Mogul Burscheid GmbH
InventorsSteffen Hoppe, Manfred Fischer, Marcus Kennedy
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Abstract
In a method for coating a sliding element, in particular a piston ring or a cylinder liner of an internal combustion engine, DLC phases are embedded into a hard material layer as said hard material layer is deposited. A sliding element, such as a piston ring or a cylinder liner of an internal combustion engine, comprises a hard material layer with embedded DLC phases.
Claims9
A coated sliding element comprising a sliding element and a hard material layer, the hard material layer comprises chromium nitride (CrN) with diamond-like carbon (DLC) phases embedded therein, wherein the CrN with the DLC phases embedded therein forms the outermost surface of the coated sliding element,
- wherein the content of the DLC phases is increased at the outermost surface and/or in the uppermost 1 to 2 microns of the hard material layer as compared to the remaining portion of the layer, and wherein the sliding element is a piston ring or a cylinder liner for an internal combustion engine.
A coated sliding element comprising a sliding element and a hard material layer, wherein the hard material layer forms an outermost surface of the coated sliding element and the hard material layer consist essentially of chromium nitride (CrN) with diamond-like carbon (DLC) phases embedded therein;
- wherein the content of DLC phases is increased at the outermost surface and/or in the uppermost 1 to 2 microns of the hard material layer as compared to the remaining portion of the layer, and wherein the sliding element is a piston ring or a cylinder liner for an internal combustion engine.
Dependencies are inferred from the claim text.