Corrosion protection and processing of magnet powders

Corrosion protection and process methods

Processing routes have been identified for the production of complex shaped magnets. Possible routes have been narrowed down to those deemed most promising. This includes two routes for shaping the unsintered magnet, two binder systems for the magnet production, and two coating systems for magnet raw material to minimize oxygen and carbon uptake during processing. Testing of subcomponents is progressing using substitute materials for NdFeB. Thus stainless steel is utilised for testing binder systems and pure iron is utilised for initial tests of protective coatings.

The photo shows iron shots protected by a coating compatible with magnet production (right) together with unprotected iron shots (left).

Contact: Martin Brorholt Sørensen,, +45 7220 2099