High-strength, soft-magnetic iron-cobalt-vanadium alloy

US7582171B2 · kind B2 · utility

Assignee

• Vacuumschmelze GmbH & Co. KG · DE

Inventors

• Joachim Gerster · Alzenau, DE
• Johannes Tenbrink · Alzenau, DE

Key dates

• Filing date: May 7, 2004
• Grant date: Sep 1, 2009
• Expiry date: Oct 3, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C19/07
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A high-strength, soft-magnetic iron-cobalt-vanadium alloy selection is proposed, consisting of 35.0≦Co≦55.0% by weight, 0.75≦V≦2.5% by weight, O≦Ta+2×Nb≦0.8% by weight, 0.3<Zr≦1.5% by weight, remainder Fe and melting-related and/or incidental impurities. This zirconium-containing alloy selection has excellent mechanical properties, in particular a very high yield strength, high inductances and particularly low coercive forces. It is eminently suitable for use as a material for magnetic bearings used in the aircraft industry.