Critical current density of bronze-processed multifilamentary Nb/sub 3/Sn wires with magnesium addition to the matrix

Journal Article · Mon Oct 01 04:00:00 EDT 1984 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.94971· OSTI ID:6459700

Wu, I W; Dietderich, D R; Johnson-Walls, P E; Glazer, J; Holthuis, J T; Hassenzahl, W V; Morris, Jr, J W

The effects of the addition of magnesium to the bronze of a bronze-processed multifilamentary Nb/sub 3/Sn conductor were studied. The bronze composition was varied from Cu-6.7 Sn-0.0 Mg to Cu-6.7 Sn-0.62 Mg. The magnesium was found to refine the Nb/sub 3/Sn grain size and improve the critical current density of the superconductor. The most heavily doped wire had an optimum critical current density three to six times better than the Mg-free control wire at all fields.

• Research Organization: Materials and Molecular Research Division, Lawrence Berkeley Laboratory and Department of Materials Science and Mineral Engineering, University of California, Berkeley, California 94720
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6459700
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 45:7; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
420201 -- Engineering-- Cryogenic Equipment & Devices
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
BRONZE
CHEMICAL COMPOSITION
COPPER ALLOYS
COPPER BASE ALLOYS
CRITICAL CURRENT
CRYSTAL DOPING
CRYSTAL STRUCTURE
CURRENT DENSITY
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
GRAIN SIZE
HEAT TREATMENTS
MAGNESIUM ADDITIONS
MAGNESIUM ALLOYS
MICROSTRUCTURE
NIOBIUM ALLOYS
PHYSICAL PROPERTIES
SIZE
SUPERCONDUCTING WIRES
SUPERCONDUCTIVITY
TIN ALLOYS
WIRES