Piston ring

US8273469B2 · kind B2 · utility

Assignee

• Federal-Mogul Burscheid GmbH · DE

Inventors

• Steffen Hoppe · Overath, DE
• Manfred Fischer · Leichlingen, DE
• Christiane Bauer · Burscheid, DE
• Ralf Lammers · Wermelskirchen, DE

Key dates

• Filing date: Jun 12, 2008
• Grant date: Sep 25, 2012
• Expiry date: May 28, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/265
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Disclosed is a piston ring comprising a supporting material and a wear-resistant coating. The wear-resistant coating is composed of a ternary system A-B—N which is applied using a PVD process and in which A and B each represent an element form the group encompassing Ti, Zr, Hf, V, Nb, Ta, Cr, Mo W, Al, Si and C, wherein A≠B and N represents nitrogen. The thickness of the wear-resistant coating amounts to ≧3 μm.