Magnet core

US10604406B2 · kind B2 · utility

Assignee

• Vacuumschmelze GmbH & Co. KG · DE

Inventors

• Giselher Herzer · Bruchköbel, DE
• Detlef Otte · Gelnhausen, DE

Key dates

• Filing date: Sep 27, 2005
• Grant date: Mar 31, 2020
• Expiry date: Sep 5, 2027

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01F41/0206
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A magnet core has a linear B-H loop, a high modulability with alternating current and direct current, a relative permeability of more than 500 but less than 15,000, and a saturation magnetostriction λs of less than 15 ppm, and is made of a ferromagnetic alloy, at least 50 percent of which consist of fine crystalline parts having an average particle size of 100 nm or less (nanocrystalline alloy) and which is characterized by formula FeaCobNicCudMeSifBgXh, wherein M represents at least one of the elements V, Nb, Ta, Ti, Mo, W, Zr, Cr, Mn, and Hf, a, b, c, d, e, f, g are indicated in atomic percent, X represents the elements P, Ge, C and commercially available impurities, and a, b, c, d, e, f, g, h satisfy the following conditions: 0<=b<=40; 2<c<20; 0.5<=d<=2; 1<=e<=6; 6.5<=f<=18; 5<=g<=14; h<5 atomic percent; 5<=b+c<=45, and a+b+c+d+e+f+g+h=100.