Fabrication of superconducting joints for Ag-clad BSCCO conductors

Journal Article · Sun Jun 01 04:00:00 EDT 1997 · Advances in Cryogenic Engineering

OSTI ID:482085

Iyer, A N; Huang, J Y; Jammy, R ^[1]

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1. Argonne National Lab., IL (United States); and others

Potential applications of high-T{sub c} superconductors include motors, generators, transmission cables, magnets, etc. At present, resistive connections are used to connect various high-T{sub c} components for such applications. However, to improve efficiency, it is imperative that the resistive connection be replaced by a true superconducting joint. Using a novel etching technique, the authors have fabricated superconducting lap and butt joints between Ag-clad BSCCO conductors. The Ag sheath from one side of the tape was selectively etched to expose the underlying superconductor core. Joints were formed by bringing the two tapes together and heat treating them. Detailed microstructural analysis and current transport measurements of the joints have been performed. Critical current (I{sub c}) through a monofilament lap- and butt-joint were 10 and 23 A, respectively. I{sub c} within the joint for mono- and multifilament conductors were 37 and 21 A, respectively. Additionally, effects of various joint configurations, processing techniques, and strain on the transport property of the joint are also being studied.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 482085
• Report Number(s): CONF-950722--
• Journal Information: Advances in Cryogenic Engineering, Journal Name: Advances in Cryogenic Engineering Vol. 42B; ISSN ACYEAC; ISSN 0065-2482
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
ELECTRIC CONTACTS
FABRICATION
HIGH-TC SUPERCONDUCTORS
STRONTIUM OXIDES
SUPERCONDUCTING WIRES