Patent · US Active

Sliding element having a coating

US9611543B2 · kind B2 · utility

1Cited by

20References

16Claims

0Family size

Assignee

Federal-Mogul Burscheid GmbH · DE

Inventors

Marcus Kennedy · Düsseldorf, DE
Michael Zinnabold · Burscheid, DE

Key dates

Filing date	May 11, 2010
Grant date	Apr 4, 2017
Priority date	—
Expiry date	Jun 12, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23C30/005
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The invention relates to a sliding element, such as a piston ring, having a coating on at least one running surface, which comprises, from the inside out, an adhesive layer (10), a metal-containing, preferably tungsten-containing, DLC layer (12), and a metal-free DLC layer (14), and is characterized in that the ratio of the thickness of the metal-free DLC layer to the thickness of the metal-containing DLC layer ranges from 0.7 to 1.5 and/or to the overall thickness of the coating ranges from 0.4 to 0.6.

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