THE DEVELOPMENT OF NB3SN SUPERCONDUCTOR WITH MICRON SIZE FILAMENTS, HIGH CURRENT DENSITIES AND LOW MAGNITIZATION

Award Information
Agency:
Department of Energy
Amount:
$456,000.00
Program:
SBIR
Contract:
N/A
Solitcitation Year:
N/A
Solicitation Number:
N/A
Branch:
N/A
Award Year:
1987
Phase:
Phase II
Agency Tracking Number:
3449
Solicitation Topic Code:
N/A
Small Business Information
Intermagnetics General
1875 Thomaston Avenue, Waterbury, CT, 06704
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
N/A
Principal Investigator
 Gennady Ozeryasky
 Principal Investigator
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract
MAGNETIC FUSION REQUIRES THE DEVELOPMENT OF LOW COST, HIGH FIELD SUPERCONDUCTORS SUCH AS NIOBIUM TIN FORUSE IN THE POLOIDAL AND TOROIDAL FIELD COILS. THE POLOIDAL SUPERCONDUCTOR IS REQUIRED TO HAVE LOW ELECTRICAL LOSS DURING THE OHMIC HEATING PULSES. THE "INTERNAL TIN" PROCESSFOR NIOBIUM TIN PROMISES TO BE THE LOW COST METHOD OF MANUFACTURE FOR FUTURE LARGE MAGNET REQUIREMENTS IN FUSHION AND HIGH ENERGY PHYSICS. LOW LOSS PULSED FUSION MAGNETS REQUIRE SUPERCONDUCTOR WITH FILAMENTS IN THE MICRON RANGE THAT ARE WEAKLY IF NOT COMPLETELY UNCOUPLED. TO MAXIMIZE THE CURRENT DENSITY IN THE "INTERNAL TIN" PROCESS AND HENCE REDUCE COST PER AMPERE METER FOR THE SUPERCONDUCTOR REQUIRESMATRIX TO NIOBIUM RATIOS SMALLER THAN 3 TO 1. FILAMENT SPACING AT THESE RATIOS BECOME EXTREMELY SMALL. THEREFORE FILAMENT SHAPE, UNIFORMITY, AND SPACING MUST BE MAINTAINED TO MINIMIZE FILAMENT BRIDGING DURING REACTION. THE PROPOSEDWORK FOCUSES ON INVESTIGATING THE EFFECT OF BILLET DESIGNS, THERMOMECHANICAL PROCESSING PARAMETERS, AND STRENGTH RATIOS OF THE MATRIX AND NIOBIUM ON THE SYMMETRY AND UNIFORMITY OF THE FILAMENTS. IMPROVEMENTS WILL ALLOW SUBSTANTIAL INCREASES IN CURRENT DENSITY AND THE ELIMINATION OF FILAMENTBRIDGING. THE RESULTING CONDUCTORS WILL ALSO BE MORE SUITABLE FOR APPLICATIONS SUCH AS; PULSED FIELDS, A.C. MOTORS AND GENERATORS, AND HIGH ENERGY PHYSICS MAGNETS.

* information listed above is at the time of submission.

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