Patent · US Active

Wear protection layer for piston rings

US9487855B2 · kind B2 · utility

0Cited by

2References

13Claims

0Family size

Assignee

Federal-Mogul Burscheid GmbH · DE

Inventors

Michael Zinnabold · Burscheid, DE
Marcus Kennedy · Düsseldorf, DE
Marc-Manuel Matz · Friedberg, DE

Key dates

Filing date	Mar 19, 2012
Grant date	Nov 8, 2016
Priority date	—
Expiry date	May 10, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16J9/26
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The present invention relates to a wear-resistant layer, which is preferably used on piston rings for internal combustion engines. The wear-resistant layer comprises: 15-25% by weight iron (Fe), 10-25% by weight tungsten carbide (WC), 30-40% by weight chromium (Cr), 10-25% by weight nickel (Ni), 10-25% by weight molybdenum (Mo), 1-10% by weight carbon (C), 0.1-2% by weight silicon (Si), wherein Cr is present in elemental form and/or as a carbide in the form of Cr2C3. A method for applying the wear resistant layer and a piston ring having such a wear resistant layer are also disclosed.

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