High tensile Bi-2223 Ag-MgO sheathed oxide superconductor

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

OSTI ID:482090

Yamada, Y; Onoda, H; Yamamoto, K ^[1]

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1. Toshiba R&D Center, Kawasaki (Japan); and others

Ag-Mg(Ni)O sheathed mono-core and multifilamentary tapes have been fabricated to improve the mechanical property of powder-in-tube method (Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x}, Bi-2223, conductor. Fine Mg(Ni)O precipitates in the sheath increased the 0.2% yield strength of the conductor up to 190 MPa, which is comparable to the commercial Nb{sub 3}Sn conductor. The Ag-MgNiO sheathed multifilamentary conductor exhibited a good strain tolerance: critical current density, J{sub c} did not decreased much up to 0.2% of bending strain and retained 80% of the zero strain J{sub c} value at 0.5% of bending strain. The dependence of J{sub c} on magnetic field was measured at 4.2K. The Ag-MgO sheathed mono-core tape made by pressing showed J{sub c} value of 105 A/cm{sup 2} at 4.2K and 13T. The Ag-MgNiO sheathed multifilamentary tape made by rolling exhibited J{sub c} of 2.6x10{sup 4} A/cm{sup 2} at 4.2K and 12T. The present results of high yield strength, good strain tolerance and high values of J{sub c} are enough to the application to the high field magnet.

• OSTI ID: 482090
• Report Number(s): CONF-950722--
• Journal Information: Advances in Cryogenic Engineering, Journal Name: Advances in Cryogenic Engineering Vol. 42B; ISSN 0065-2482; ISSN ACYEAC
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
CRITICAL CURRENT
HIGH-TC SUPERCONDUCTORS
MAGNESIUM OXIDES
NICKEL OXIDES
SILVER
STRONTIUM OXIDES
SUPERCONDUCTING WIRES
TENSILE PROPERTIES
YIELD STRENGTH