| Combustion Driven Compaction of Nanostructured SmCo/Fe |
| Exchange spring magnetic materials can potentially increase the energy-products of permanent magnets | |
| Powder consolidation has the ability to form composite magnets with arbitrary 3D shapes and sizes, less $ for expensive hard phase, possibility of mechanical fiber reinforcements | |
| Approach |
| Challenges for compacted nanocomposites |
| Powder Precursors |
| Sm2Co17 (= Sm(Co0.67Fe0.234Cu0.07Zr0.024)7.5)* or SmCo5 for the hard phase [d ~ 1 mm] | |
| High crystallinity acicular-Fe nanoparticles for soft phase [length ~ 200 nm, d ~ 20 nm] | |
| SmCo and Fe powder precursors were mixed together by gentle milling |
| Acicular Fe Nanoparticles |
| Consolidation Methods |
| Combustion Driven Compaction |
| Different Compaction Methods |
| X-ray Diffraction and CDC |
| Different Compaction Methods |
| Pre-Alignment of Powder |
| CDC and Alignment |
| CDC: via green-compact |
| Estimating Alignment Retention |
| Estimate alignment retained during compaction (CDC), using X-ray Pole Figure analysis | |
| For a particular Bragg angle, diffraction from corresponding plane is recorded | |
| Pole Figures |
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