Nickel-based monocrystalline superalloy, in particular for the blades of a turbomachine

US4900511A · kind A · utility

Assignee

• OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AÉROSPATIALES · FR

Inventors

• Tasadduq Khan · Vélizy-Villacoublay, FR
• Pierre Caron · Les Ulis, FR
• Jean-Louis Raffestin · Les Ulis, FR

Key dates

• Filing date: Dec 6, 1988
• Grant date: Feb 13, 1990
• Expiry date: Dec 6, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C30B29/52
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A low density superalloy having good resistance to oxidation has the following composition by weight: PA0 Co: 5.0 to 6.0% PA0 W: 4.8 to 5.2% PA0 Cr: 7.8 to 8.3% PA0 Al: 5.8 to 6.1% PA0 Ta: 3.3 to 3.7% PA0 Mo: 2.1 to 2.4% PA0 Ti: 1.8 to 2.2% PA0 B: .ltoreq.10 ppm PA0 Zr: .ltoreq.50 ppm PA0 Ni: balance to 100%.