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SINTERING/ HEAT TREATMENT

Die pressed parts out of neodymium iron boron (Nd-Fe-B) or samarium cobalt (Sm-Co) alloy powders are densified into Netshape-magnets in vacuum sintering furnaces. During this process the texture from the pressing process is retained.

After sintering, the microstructure is optimised with regard to magnetic properties by heat treatment by means of:

  • Temperature and duration of annealing
  • Nature and pressure of the inert gas atmosphere and
  • Cooling speed
Vacuum sintering furnace
Schematic microstructure of sintered magnets

Last update: 02.07.2012

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