Rare-Earth NdFeB Permanent Magnets
NdFeB Magnets made of MPCO NEODYM
Rare-Earth NdFeB Permanent Magnets for Highest Energy Density Requirements
Permanent Magnets made of NEODYM with various coatings
Neodymium-Iron-Boron magnets made of MPCO have the highest energy density available today. NEODYM alloys are anisotropic material grades.
Our NEODYM Alloys made of Neodymium-Iron-Boron
Up to ten times higher energy densities in comparison to ferrites
Existing magnet systems can be improved
New design principles are realized and new fields of application are opened
New alloy classes can be used for working temperatures above 200 °C (depending on coercivity) and working point
Magnets out of NEODYM are produced by sintering using powder metallurgical processes. The excellent magnetic properties of NEODYM are traced to the strongly magnetic matrix phase Nd2Fe14B with very high saturation polarization and high magnetic anisotropy. A ductile neodymium-rich bonding phase at the grain boundaries gives these magnets good magnetical properties.
Depending on form, quantities, dimensions, tolerances and magnetic properties the magnets are produced out of bigger (isostatically) pressed blocks or die-pressed.
The magnetic properties are influenced by the alloy composition and the pressing. Different positions for back pat method. Three different processes are possbile which are reflected in the alloy name with the letters HR, TP or AP. HR (High Remanence) refers to isostatically pressed magnets. In die-pressed design we differentiate between TP (Transverse-Pressed) and AP (Axial-Pressed)
When die-pressing, the powder particles are aligned by strong magnetic fields parallel (axial field for AP-grades) or perpendicular (transverse fields for TP-grades) to the direction of pressing depending on the geometry of the part. Isostatically or transverse-field pressed parts have an about 5 to 8 % higher remanence compared to axial-field pressed magnets.
With the estaBLIshed grain boundary diffusion process the coercivity of such magnets can be increased up to a maximum of 600 kA/m (depending from the thickness of the permanent magnet).
Linear and servo motors
Aircraft application with high energy density
Automotive applications (e.g. electric power steering, sensors, etc.)
Scientific applications (wigglers, beam guiding systems and undulators)