Recycled additively manufactured printed rare earth magnets with no wastage

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 Schematics of the recycling process of AM bonded magnets

Schematics of the recycling process of AM bonded magnets

This CMI-funded research was conducted at Ames Laboratory and Oak Ridge National Laboratory, in a collaboration between CMI projects Additive Manufacturing of Polymer Bonded Magnets (2.1.11) and Recovery of Critical Materials from Dilute Electronic Waste Streams (3.3.13). 

Achievement:
Successfully demonstrated recycling of additively manufactured (AM) rare earth magnets with nearly 100% yield and no magnet degradation

Significance and Impact:

  • Reduced manufacturing wastage and potentially offset any rare earth element demand and low production costs
  • Research advances efforts to ensure sustainability in critical materials by forming a close loop supply chain

Details and Next Steps:

  • Remanent magnetization and saturation magnetization increased by 4% and 6.5% respectively, due to enhanced density by 6% while coercivity and energy product were retained from the original additive printed bonded magnets
  • Being extended to anisotropic AM gap magnets
Energy product vs. T of recycled AM bonded magnets
Energy product vs. T of recycled AM bonded magnets