Soft magnetic alloy and method for producing a soft magnetic alloy

US9243304B2 · kind B2 · utility

Assignee

• Vacuumschmelze GmbH & Co. KG · DE

Inventors

• Witold Pieper · Frankfurt, DE
• Niklas Volbers · Bruchköbel, DE
• Joachim Gerster · Alzenau, DE

Key dates

• Filing date: Jun 29, 2012
• Grant date: Jan 26, 2016
• Expiry date: Jun 29, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01F1/14708
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A soft magnetic alloy is provided that consists essentially of 47 weight percent≦Co≦50 weight percent, 1 weight percent≦V≦3 weight percent, 0 weight percent≦Ni≦0.25 weight percent, 0 weight percent≦C≦0.007 weight percent, 0 weight percent≦Mn≦0.1 weight percent, 0 weight percent≦Si≦0.1 weight percent, at least one of niobium and tantalum in amounts of x weight percent of niobium, y weight percent of tantalum, remainder Fe. The alloy includes 0 weight percent≦x<0.15 weight percent, 0 weight percent≦y≦0.3 weight percent and 0.14 weight percent≦(y+2x)≦0.3 weight percent. The soft magnetic alloy has been annealed at a temperature in the range of 730° C. to 880° C. for a time of 1 to 6 hours and comprises a yield strength in the range of 200 MPa to 450 MPa and a coercive field strength of 0.3 A/cm to 1.5 A/cm.