Precipitates copper-zinc alloy with nickel silicide

US4954187A · kind A · utility

Assignee

• Diehl GmbH & Co. · DE

Inventors

• Norbert Gaag · Achern, DE
• Peter Ruchel · Achern, DE

Key dates

• Filing date: Oct 20, 1988
• Grant date: Sep 4, 1990
• Expiry date: Oct 20, 2008

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D23/025
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Utilization of a copper-zinc alloy for semifinished materials and semi-manufactured articles; especially synchronizing rings. The copper-zinc alloy is essentially constituted of 50 to 65% copper, 1 to 6% aluminum, 0.5 to 5% silicon, 5 to 8% nickel, as well as selectively 0 to 1% iron, 0 to 2% lead, 0 to 2% manganese, all in percent by weight, with zince as the remainder, as well as unavoidable impurities, whereby the nickel is overwhelmingly present in an intermetallic composition with silicon (nickel-silicide). The silicides are in round, uniformly distributed fine precipitate form.