Sliding element in an internal combustion engine, in particular a piston ring

US8652620B2 · kind B2 · utility

Assignee

• Federal-Mogul Burscheid GmbH · DE

Inventors

• Manfred Fischer · Leichlingen, DE
• Steffen Hoppe · Overath, DE

Key dates

• Filing date: Aug 26, 2009
• Grant date: Feb 18, 2014
• Expiry date: May 26, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24983
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A sliding element in an internal combustion engine has a coating which has the following layers from the outside inwards: a first carbon-based layer, a second carbon-based layer which is harder and/or has a smaller proportion of hydrogen than the first carbon-based layer, a PVD layer and a bonding layer.