Processing of NdFeB Magnetic Material
AssigneeThe University of Birmingham
InventorsAllan Walton, Neil Rowson, Enrique Herraiz Lalana
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Abstract
A method of processing NdFeB magnetic powder comprises: providing a source of hydrogenated NdFeB powder (101, 102, 103); feeding said powder into an inlet of a cyclone separator (104); separating the powder into an overflow enriched in Nd-rich grain boundary phase and an underflow enriched in NdxFeyBHz matrix phase particles (106); optionally feeding the underflow back into the inlet of the cyclone separator whereby to further enrich the underflow in the NdxFeyBHz matrix phase particles (108a); and collecting the underflow (108).
Claims7
A method of processing NdFeB magnetic powder comprising:
- (i) providing a source of hydrogenated NdFeB powder;
- (ii) feeding said powder into an inlet of a cyclone separator;
- (iii) separating the powder into an overflow enriched in Nd-rich grain boundary phase and an underflow enriched in NdxFeyBHz matrix phase particles;
- (iv) optionally feeding the underflow back into the inlet of the cyclone separator whereby to further enrich the underflow in the NdxFeyBHz matrix phase particles;
- and
- (v) collecting the underflow.
Dependencies are inferred from the claim text.