Method employing tension control and lower-cost alloy composition annealing amorphous alloys with shorter annealing time

US6254695A · kind A · utility

Assignee

• Vacuumschmelze GmbH & Co. KG · DE

Inventors

• Giselher Herzer · Bruchköbel, DE
• Robert Schulz · Lampertheim, DE

Key dates

• Filing date: Aug 13, 1998
• Grant date: Jul 3, 2001
• Expiry date: Aug 13, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21D8/0252
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A ferromagnetic resonator for use in a marker in a magnetomechanical electronic article surveillance system has improved properties and can be manufactured at higher annealing speeds and reduced raw material cost by virtue of being continuously annealed in the simultaneous presence of a magnetic field perpendicular to the ribbon axis and a tensile stress applied along the ribbon axis and by providing an amorphous magnetic alloy containing iron, cobalt and nickel in which the portion of iron is more than about 15 at % and less than about 30 at %.