Magnetization measurements on multifilamentary No/sub 3/Sn and NbTi conductors

Conference · Fri Mar 01 04:00:00 EST 1985 · IEEE Trans. Magn.; (United States)

OSTI ID:6484814

Ghosh, A K; Robins, K E; Sampson, W B

The effective filament size has been determined for a number of high current Nb/sub 3/Sn multifilamentary composites. In most cases it is much larger than the nominal filament size. For the smallest filaments (..integral.. 1 micron) the effective size can be as much as a factor of forty times the nominal size. Samples made by the ''internal tin'', ''bronze route'', and ''jelly roll'' methods have been examined with filaments in the range one to ten microns. Rate dependent magnetization and ''flux'' jumping'' have been observed in some cases. NbTi composites ranging in filament size from nine to two hundred microns and with copper to super-conductor ratios between 1.6:1 and 7:1 have been examined in the same apparatus. Low field ''flux jumping'' was only observed in conductors with very large filaments and relatively little stabilizing copper.

• Research Organization: Brookhaven National Laboratory, Upton, NY
• OSTI ID: 6484814
• Report Number(s): CONF-840937-
• Conference Information: Journal Name: IEEE Trans. Magn.; (United States) Journal Volume: MAG 21:2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALLOYS
COMPOSITE MATERIALS
COPPER ADDITIONS
COPPER ALLOYS
CRITICAL CURRENT
CURRENTS
ELECTRIC CURRENTS
FABRICATION
FILAMENTS
MAGNETIC FLUX
MAGNETIZATION
MATERIALS
MEASURING INSTRUMENTS
MEASURING METHODS
NIOBIUM ALLOYS
SIZE
STABILIZATION
SUPERCONDUCTING WIRES
TIN ALLOYS
TITANIUM ALLOYS
WIRES