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Properties:

Alloy:

VAC Products:

VITROVAC

The homogeneous and isotropic structure of amorphous metals are ideal for good soft magnetic properties. The characteristic low coercitivity field strengths and high permeabilities outperform the best crystalline nIckel-iron (NiFe) alloys.

The magnetostriction-free amorphous cobalt-based VITROVAC® alloys achieve peak values. By combining a unique alloy selection with an adapted heat treatment, hysteresis loops can be customized to meet the specific needs of each application.

The production of amorphous metals requires a manufacturing technology that operates on the basis of the necessary cooling rates, which is known as rapid solidification.

The nature of the production process is the reason why amorphous alloys are offered only in the form of thin metal foils or circular tape cores made from them. Subsequently, tapes can be made for screening or magnet heads as well as sectioned or punched parts for special electrical engineering applications.

Overview

VAC-product 

Applications

Benefits 

VITROVAC 6006

electronic article surveillance tags 

high remanence ratio

VITROVAC 6025

magnet heads, magnetic field sensors, 
chokes, transformers, 
electronic article surveillance tags 

very high permeability,
low losses 

VITROVAC 6030 

transformers, magnetic switches, 
electronic article surveillance tags 

higher saturation induction Bs,
low losses

VITROVAC 6155

signal transformers, magnetic switches, 
chokes, power transformers, 
electronic article surveillance tags 

higher saturation induction Bs
low losses 

Typical data of amorphous Co-based alloys:

  • strip thickness: t = 17…25 µm (computed average thickness from weight)
  • strip width: w= 0.7…50 mm
  • Vickers hardness: HV 0.05 = 800…1000
  • operating temperature: 80 … 120 °C 
  • temperature coefficient: TK= 1…2 %/100 K
  • Young's modulus: 100…150 GPa
  • tensile strength: 1000…1700 MPa

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Last update: 06.05.2014