Magnetization measurements on multifilamentary Nb/sub 3/Sn and NbTi conductors

Conference · Sun Jan 01 04:00:00 EST 1984

OSTI ID:6419224

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 (approx. 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. 9 references, 6 figures, 3 tables.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6419224
• Report Number(s): BNL-35253; CONF-840937-13; ON: DE85001237
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALLOYS
COMPOSITE MATERIALS
CONSTRUCTION
FILAMENTS
INTERMETALLIC COMPOUNDS
MAGNETIZATION
MATERIALS
NIOBIUM COMPOUNDS
REFRACTORY METAL COMPOUNDS
SUPERCONDUCTORS
TIN COMPOUNDS
TRANSITION ELEMENT COMPOUNDS