Stress/strain performance of sheathed bismuth-2223 superconductors

Technical Report · Fri Aug 01 04:00:00 EDT 1997

OSTI ID:537392

Vasanthamohan, N; Singh, J P; Khanna, G; Lanagan, M T ^[1]

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1. Argonne National Lab., IL (United States). Energy Technology Div.

Besides possessing high current transport properties, superconductors employed in several applications must also be capable of retaining those properties when subjected to stresses and strains. This paper explores the potential for Consil, an alloy containing Ag, 0.25 wt% Ni and 0.25 wt.% Mg, to serve as a potential sheathing material in the processing of BSCCO (2223) superconductors. Strain tolerance measurements at 77 K and 0 Tesla indicate superior performance by Consil-sheathed tapes over tapes sheathed in commercially pure Ag. While the pure Ag undergoes an abrupt decrease in critical current (I{sub c}) beyond a certain strain level (0.2% strain), Consil-sheathed tapes show a more gradual decrease. However, despite their superior performance under strain, the Consil-sheathed tapes did not yield critical current density (J{sub c}) values that are normally obtained in Ag-sheathed tapes. The reason for this behavior has been attributed to poor phase conversion of the superconducting core inside the Consil sheath, even after extended sintering times (250 h).

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 537392
• Report Number(s): ANL/ET/CP--94365; CONF-970568--14; ON: DE97054157
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
EXPERIMENTAL DATA
HIGH-TC SUPERCONDUCTORS
MAGNESIUM ALLOYS
MECHANICAL PROPERTIES
MICROSTRUCTURE
NICKEL ALLOYS
SILVER ALLOYS
STRONTIUM OXIDES
SUPERCONDUCTING COMPOSITES
SUPERCONDUCTIVITY