Composite Ceramic Superconducting Wires for Electric Motor Applications
Abstract
This report describes progress on developing Y-123 wire for an HTSC motor. The wire development involves synthesis of Y-123 powder, spinning polymer-containing 'green fiber', heat treating the fiber to produce metallized superconducting filaments, and characterizing the electrical properties. A melt spinning process was developed for producing 125-micron diameter green fiber containing 50 vol% Y-123. This fiber can be braided for producing transposed multifilamentary wire. A process was developed to coat green fiber with silver alloys which can be continuous sintering. A second process for multifilamentary ribbon wire is also being developed. The Y-123 filaments have 77 deg self-field Jc values up to 2600 A/cm2, but Jc is reduced to 10 A/cm squared at 800 G. Preliminary data is presented on mechanical properties. A DC homopolar motor with an iron magnetic circuit is being designed to operate with early HTSC wire. Keywords: Superconductor; Ceramic; Motor.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 07, 1989
- Accession Number
- ADA210345
Entities
People
- John W. Holloran