After the parts have been printed, they need to be separated from the building platform. This is typically done by mechanical cutting or via electric discharge machining.
To reach the optimal microstructure and high coercivity of Nd-Fe-B magnets, post-process heat treatments are applied after 3D-printing.
Even as 3D-printing is a near-net-shape manufacturing process, surfaces requiring precise dimensions or excellent surface finish need to be machined to tolerances.
Magnets are coated either with nickel or epoxy based coatings to provide protection against corrosion
Finally, the magnets are magnetized
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.