Ferrite

The development of this family of magnets was announced in 1952 (isotropic) and 1954 (anisotropic). Also known as Ceramic Magnets, the Ferrite is manufactured in two compositions Strontium Carbonate and Barium based (BaFe2O3).

The process consists of milling the raw materials compound with the powder wet or dry pressed in a die under the influence of a magnetic field. After that, the pressed compacts are sintered in ovens at high temperatures.

Nowadays, a ceramic magnet (Ferrite) is the cheapest magnetic material available. It is very hard and brittle; they can be cut by using diamond tools.

Ferrite has high resistance against corrosion, acids, salts, lubricants, gases. No coating is needed for surface protection.