Composite ceramic superconducting wires for electric-motor applications. Quarterly report No. 7, 1 January-31 March 1990

Technical Report · Mon Apr 30 00:00:00 EDT 1990

OSTI ID:6617436

Halloran, J W

Silver clad polycrystalline Y-123 wire is being fabricated with a continuous reel-to-reel process. Scale-up activities are underway to produce enough wire for the field coils of the HTSC motor. We have produced green HTSC fiber is kilometer lengths, and sintered wires up to 166 meters long. The 77K Jc values are 1000-2800 A/sq cm in self field. To improve Jc of the Y-123 wire, development began on directional crystallization, including preliminary work at A.D. Little and Oak Ridge National Lab. Large lots of BiSCCO material were produced to fabricated fibers and sintered polycrystalline BiSSCO wire as rolled tape. Work continued in collaboration with Sandia and Los Alamos National Laboratories on rapid thermal processing of Y-123, with most emphasis on characterizing the rapid oxygenation effect. The design of the HTSC homopolar motor has been improved to increase the output from field coils by using six smaller coils, each with separately optimized current. Motor construction is in progress. Preliminary design is underway on a DC heteropolar motor with HTSC field windings and armature and a brushless trapped flux permanent magnet DC motor, in which the field is produced by trapped flux in an HTSC rotor.

• Research Organization: Ceramics Process Systems Corp., Milford, MA (USA)
• OSTI ID: 6617436
• Report Number(s): AD-A-222085/3/XAB; CPS--90-010; CNN: N00014-88-C-0512; DARPA Order-9525
• Country of Publication: United States
• Language: English

Related Subjects

426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CERAMICS
COMPOSITE MATERIALS
CONSTRUCTION
CRITICAL CURRENT
CRYSTALLIZATION
CURRENTS
DESIGN
DOCUMENT TYPES
ELECTRIC CURRENTS
ELECTRIC MOTORS
ELEMENTS
ENERGY
FABRICATION
HEAT
MATERIALS
MOTORS
NONMETALS
OPTIMIZATION
OXYGEN
PHASE TRANSFORMATIONS
PROCESSING
PROGRESS REPORT
SCALING LAWS
SINTERING
SUPERCONDUCTING WIRES
SUPERCONDUCTORS
USES
WIRES