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Oliver Gutfleisch, Konrad Güth, Thomas George Woodcock and Ludwig Schultz Recycling Used Nd-Fe-B Sintered Magnets via a Hydrogen-Based Route to Produce Anisotropic, Resin Bonded Magnets Advanced Energy Materials 3

Article first published online: 24 SEP 2012 | DOI: 10.1002/aenm.201200337

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Hydrogen processing (HD + HDDR) is used to recycle Nd-Fe-B sintered magnets yielding anisotropic resin bonded magnets (RBM). HD produces single-crystalline powders from the sintered magnets. HDDR improves the magnetic properties by producing ultrafine grained, highly textured polycrystals. RBM produced from optimally processed recycled material shows comparable magnetic properties to non-recycled RBM.

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