VAC has been working on the magnetic properties of special metallic materials and their applications for over 70 years. In 1973 VAC had already started producing permanent magnets on a rare-earth-cobalt base using powder metallurgical methods.
The product range of rare-earth magnets covers a carefully balanced program of materials with different magnetic properties. As a result, it is relatively easy to select a material suitable for any specific application.
VACOMAX® is the permanent magnet material of rare-earths and cobalt. These magnets feature especially high coercivities with simultaneously high saturation and excellent temperature and corrosion stability.
VACODYM® is the permanent magnet material offering the highest energy densities currently available. The excellent magnetic properties of this material group can be traced to the strongly magnetic matrix phase Nd2Fe14B featuring very high saturation polarization and high magnetic anisotropy. A ductile neodymium-rich bonding phase at the grain boundaries provides these magnets with good mechanical properties.
The magnetic properties are largely determined by the prematerial and the production process. Magnets can be produced in three different ways. These three methods are identified by the letters HR, TP, or AP in the alloy code. HR (high remanence) refers to the isostatically pressed magnet. In the die pressed design VAC differentiate between TP (transverse pressed) and AP (axial pressed).