A novel processing technique for fabrication of flexible YBa sub 2 Cu sub 3 O sub 7 minus sub x wire

Journal Article · Wed Nov 01 04:00:00 EST 1989 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.343921· OSTI ID:5259425

Samanta, S K; Samajdar, S; Durrant, W; Gupta, M ^[1]

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1. Plasticity Laboratory, Department of Mechanical Engineering and Applied Mechanics, The University of Michigan, 2250 G. G. Brown, Ann Arbor, Michigan 48109 (US)

A fabrication technique for producing flexible superconductor wire by extrusion of a composite of Ag{sub 2}O-YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} is reported. During the course of processing, the superconductive transition of the starting powder is maintained, thus obviating the need for subsequent heat treatment. This nonpoisoning behavior of Ag{sub 2}O is of significant technical importance. Scanning electron fractography reveals a mixed mode fracture behavior of the material and the evidence of ductility. Magnetic measurements on the extruded wires show an onset temperature of 91 K. Resistivity measurements indicate that the electrical resistance of the as-extruded wire essentially vanishes at liquid-nitrogen temperature.

• OSTI ID: 5259425
• Journal Information: Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 66:9; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COMPOSITE MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
EXTRUSION
FABRICATION
MATERIALS
MATERIALS WORKING
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCANNING ELECTRON MICROSCOPY
SILVER COMPOUNDS
SILVER OXIDES
SUPERCONDUCTING COMPOSITES
SUPERCONDUCTING WIRES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
WIRES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES