Decarbonisation
Degassing Window for Jet-Milled HPMS NdFeB Powder Recycled from Wind-Turbine Magnets: Hydrogen Desorption and Magnetic Recovery
Hydrogen processing of magnetic scrap (HPMS) is a promising short-loop route for recycling end-of-life NdFeB permanent magnets; however, the resulting hydrogenated powder requires vacuum degassing before reuse. This study defines a phenomenological degassing window for HPMS jet-milled powder from end-of-life wind-turbine magnets by screening degassing temperature (650–900 °C), heating rate (1–3 °C/min), and dwell time (5–60 min) under vacuum. Pressure–temperature…