Neodymium-Iron-Boron magnets

Neodymium iron boron magnets (NdFeB)

masetec-magnete_ndfeb

The high-energy magnets consisting of neodymium, iron and boron are characterized among other things by the fact that they can be used in a space-saving way. masetec offers a large selection of NdFeB magnets.

Use of NdFeB magnets

NdFeB magnets are particularly suitable for sensor technology or in electric motors and generators due to their stable and high magnetic effect at low heat development. They are even used in wind power plants. One reason for using NdFeB magnets is their high holding strength, even with small sizes, and their low cost. This saves space and money.

Design of NdFeB magnets

NdFeB magnets consist of neodymium, iron and boron. The excellent magnetic properties and low-cost production possibility of this compound was discovered in the 1970s.

Production of NdFeB magnets

The components of NdFeB magnets are finely ground and pressed under the influence of a strong magnetic field. Sintering stabilizes the magnetic effect. The strength of the magnet is determined by the energy density. Due to the occurrence of the raw materials, most of the NdFeB magnets are manufactured in Asia.

Coatings on NdFeB magnets

NdFeB magnets are coated with nickel and copper or nickel and gold. An additional surface coating with zinc or nickel provides for a higher corrosion resistance.

Magnet selection guide

LOWHIGH

Energy product

FerriteAlNiCoSmCoNdFeB

Costs

FerriteAlNiCoNdFeBSmCo

Max. Operating Temperature

NdFeBFerriteSmCoAlNiCo

Corrosion Resistance

NdFeBSmCoAlNiCoFerrite

Resistance to demagnetization

AlNiCoFerriteNdFeBSmCo

Mechanical strength

FerriteSmCoNdFeBAlNiCo

Temperature coefficient

AlNiCoSmCoNdFeBFerrite

Advantages Neodymium and NdFeB

  • Exceptionally high energy density at room temperature
  • Considerable coercivity
  • Especially stable against demagnetizing fields

Caution with NdFeB magnets

  • For use in humid or aggressive atmospheres, a coating is indispensable as corrosion protection
  • Not unlimited temperature stability
  • High temperature coefficient

Safety Instructions

Here you can find out what you have to pay attention to when handling magnets – just download the pdf file.

Magnetisations

Download our information sheet about magnetisation as pdf-file here.

Selection Guide Magnets

Our practical information sheet will help you select the right magnets.

We are looking forward to your inquiry.