Submicron multifilamentary high performance Nb/sub 3/Sn produced by powder metallurgy processing of large powders

Journal Article · Tue Mar 01 04:00:00 EST 1983 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.93973· OSTI ID:6385160

Otubo, J; Pourrahimi, S; Zhang, H; Thieme, C L.H.; Foner, S

Powder metallurgy processed submicron multifilamentary Nb/sub 3/Sn superconducting wires were fabricated starting with 250--500-..mu..m-diam powders. A multiple strand bundling procedure was used to simulate large scale production with actual areal reductions greater than 10/sup 6/ to achieve submicron fibers. Both external tin and tin core processing were successful. Typical Cu-36 wt.% Nb-Sn materials gave overall critical current densities of 8 x 10/sup 4/ A/cm/sup 2/ at 12 T, 3 x 10/sup 4/ A/cm/sup 2/ at 14 T, and 6 x 10/sup 3/ A/cm/sup 2/ at 16 T. These results demonstrate that particle size and billet size can be scaled from earlier laboratory scale to large scale fabrication to produce high performance materials.

• Research Organization: Francis Bitter National Magnet Laboratory and Plasma Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
• OSTI ID: 6385160
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 42:5; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
CRITICAL CURRENT
CURRENT DENSITY
CURRENTS
ELECTRIC CURRENTS
FABRICATION
FILAMENTS
METALLURGY
NIOBIUM ALLOYS
PERFORMANCE
POWDER METALLURGY
SCALING LAWS
SIMULATION
SIZE
SUPERCONDUCTING WIRES
TIN ALLOYS
WIRES