Composite ceramic superconducting wires for electric-motor applications. Quarterly report No. 2, 30 September-30 December 1988

Technical Report · Fri Dec 30 04:00:00 EST 1988

OSTI ID:5920241

Halloran, J W

This is the Second Quarterly report on a project to develop HTSC wire for an HTSC motor. The raw material for fiber production is an improved YBa/sub 2/Cu/sub 3/O(7-x) powder. Continuous spools of green YBa/sub 2/Cu/sub 3/O(7-x) fiber are being produced. The major effort in fiber spinning is aimed at improving fiber quality and reducing fiber. Binder burnout and sintering has been intensively investigated. Fiber sintering fibers is done by the rapid zone sintering method. A continuous furnace received near the end of this Quarter will be used for continuous sintering. Continuous silver-coated green fiber is produced. Progress was made toward continuous cladding using the mechanical cladding concept. The melt spinning process was successfully applied to YBa/sub 2/Cu/sub 3/O(7-x) powders at 50 vol% solids loadings. The cladding work centered on mechanical cladding of silver-treated filaments by solder bonding to copper strips. Aluminum deposits on YBa/sub 2/Cu/sub 3/O(7-x) filament surfaces were produced by MOCVD at ATM, but the superconductivity was degraded. Electrical characterization work focused on methods of making low-resistance contacts on YBa/sub 2/Cu/sub 3/O(7-x) filaments. Emerson Motor Division has begun work on DC heteropolar and homopolar motor designs. The mechanical stresses on conventional copper wires during winding were characterized to determine the mechanical parameters of motor building.

• Research Organization: Ceramics Process Systems Corp., Cambridge, MA (USA)
• OSTI ID: 5920241
• Report Number(s): AD-A-204532/6/XAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
360603 -- Materials-- Properties
420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BINDERS
BONDING
BURNOUT
CERAMICS
CHALCOGENIDES
CLADDING
COMPOSITE MATERIALS
COPPER COMPOUNDS
CUPRATES
DEPOSITION
DOCUMENT TYPES
ELECTRIC CONDUCTIVITY
ELECTRIC MOTORS
ELECTRICAL PROPERTIES
FABRICATION
FIBERS
FURNACES
JOINING
MATERIALS
MECHANICAL PROPERTIES
MOTORS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRODUCTION
PROGRESS REPORT
SINTERING
SOLDERING
STRESSES
SUPERCONDUCTING WIRES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
SURFACE COATING
TRANSITION ELEMENT COMPOUNDS
WELDING
WIRES
YTTRIUM COMPOUNDS