Patent · US Active

Sliding element, in particular a piston ring, having a coating

US9488275B2 · kind B2 · utility

6Cited by

1References

9Claims

0Family size

Assignee

Federal-Mogul Burscheid GmbH · DE

Inventors

Yuriy Ivanov · Bensberg, DE
Marcus Kennedy · Düsseldorf, DE
Ralf Lammers · Wermelskirchen, DE
Michael Zinnabold · Burscheid, DE

Key dates

Filing date	Jan 8, 2014
Grant date	Nov 8, 2016
Priority date	—
Expiry date	Jan 8, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23C28/347
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The invention relates to a sliding element, in particular a piston ring, having at least one running surface. The running surface comprises a coating, which from the inside to the outside has at least one first adhesive layer, a hard hydrogen-free DLC layer, a second adhesive layer, a soft hydrogen-containing, metal and/or metal carbide-containing DLC layer, which is softer than the hard hydrogen-free DLC layer, and a hard hydrogen-containing DLC layer, which is harder than the soft hydrogen-containing, metal and/or metal carbide containing DLC layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.