New size sorting technology for superconducting powders

A new technique is being developed to make it possible to achieve defect-free particle size sorting of the precursor powders for multi-filament superconductors, Nb/sub 3/Sn, Bi-2212 and Bi-2223. Sharp cutoff is critical in the effort to achieve small filament size in multi-filament composites of Nb/...

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Veröffentlicht in:	IEEE transactions on applied superconductivity 2003-06, Vol.13 (2), p.3494-3497
Hauptverfasser:	Fu, X.K., Gupta, A., McIntyre, P.M., Phares, D.J.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Current density Electrical engineering. Electrical power engineering Electromagnets Electronics Exact sciences and technology Iron Multifilamentary superconductors Niobium Particle accelerators Powders Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Sorting Superconducting devices Superconducting filaments and wires Superconductivity Tin Various equipment and components
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Beschreibung
Zusammenfassung:	A new technique is being developed to make it possible to achieve defect-free particle size sorting of the precursor powders for multi-filament superconductors, Nb/sub 3/Sn, Bi-2212 and Bi-2223. Sharp cutoff is critical in the effort to achieve small filament size in multi-filament composites of Nb/sub 3/Sn, Bi-2212 and Bi-2223. Accelerator Technology Corp. (ATC) has developed an approach using a slot-geometry virtual impactor to critically remove the coarse particles. Representative Fe/sub 2/O/sub 3/ and Bi-2212 powders were chosen to evaluate its performance. The results show that a sharp cutoff /spl sim/3 microns separation has achieved in both two powders.
ISSN:	1051-8223 1558-2515
DOI:	10.1109/TASC.2003.812378