US 9,809,885 B2
Method for coating a sliding element and sliding element, in particular a piston ring or cylinder liner of an internal combustion engine
Steffen Hoppe, Overath (DE); Manfred Fischer, Leichlingen (DE); and Marcus Kennedy, Dusseldorf (DE)
Assigned to Federal-Mogul Burscheid GmbH, Burscheid (DE)
Appl. No. 13/124,709
Filed by Steffen Hoppe, Overath (DE); Manfred Fischer, Leichlingen (DE); and Marcus Kennedy, Dusseldorf (DE)
PCT Filed Oct. 15, 2009, PCT No. PCT/EP2009/063472
§ 371(c)(1), (2), (4) Date Jul. 11, 2011,
PCT Pub. No. WO2010/043669, PCT Pub. Date Apr. 22, 2010.
Claims priority of application No. 10 2008 042 896 (DE), filed on Oct. 16, 2008.
Prior Publication US 2011/0256366 A1, Oct. 20, 2011
Int. Cl. B32B 7/02 (2006.01); F02F 1/00 (2006.01); F16J 9/26 (2006.01); C23C 30/00 (2006.01); C23C 28/04 (2006.01); F16J 10/04 (2006.01); C23C 28/00 (2006.01)
CPC C23C 30/00 (2013.01) [C23C 28/046 (2013.01); C23C 28/343 (2013.01); C23C 30/005 (2013.01); F16J 9/26 (2013.01); F16J 10/04 (2013.01); C23C 28/34 (2013.01); Y10T 428/12486 (2015.01); Y10T 428/12493 (2015.01); Y10T 428/2495 (2015.01)] 9 Claims
 
1. 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.