Alloy, magnet core and method for producing a strip from an alloy

US10347405B2 · kind B2 · utility

Assignee

• Vacuumschmelze GmbH & Co. KG · DE

Inventors

• Giselher Herzer · Bruchköbel, DE
• Mie Marsilius · Hainstadt, DE
• Christian Polak · Blankenbach, DE

Key dates

• Filing date: Oct 11, 2013
• Grant date: Jul 9, 2019
• Expiry date: Jun 11, 2035

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01F41/02
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

An alloy of Fe100-a-b-c-d-x-y-zCuaNbbMcTdSixByZz and up to 1 atomic % impurities; M is one or more of Mo or Ta, T is one or more of V, Cr, Co or Ni and Z is one or more of C, P or Ge, wherein 0.0 atomic %≤a<1.5 atomic %, 0.0 atomic %≤b<3.0 atomic %, 0.2 atomic %≤c≤4.0 atomic %, 0.0 atomic %≤d<5.0 atomic %, 12.0 atomic %<x<18.0 atomic %, 5.0 atomic %<y<12.0 atomic % and 0.0 atomic %≤z<2.0 atomic %, and wherein 2.0 atomic %≤(b+c)≤4.0 atomic %, produced in the form of a strip and having a nanocrystalline structure in which at least 50% by volume of the grains have an average size of less than 100 nm, a remanence ratio Jr/Js<0.02, Jr being the remanent polarization and Js being the saturation polarization, and a coercitive field strength Hc which is less than 1% of the anisotropic field strength Ha and/or less than 10 A/m.