High critical currents in cold-powder-metallurgy-processed superconducting Cu-Nb-Sn composites

Journal Article · Fri Jun 01 04:00:00 EDT 1979 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.90665· OSTI ID:6182963

Fluekiger, R; Foner, S; McNiff, Jr, E J; Schwartz, B B

Cold-powder-metallurgy-processed superconducting Cu-Nb-Sn (discontinuous) multifilamentary composites have been fabricated. Overall critical current J/sub c/ comparable to the best in situ and commercial multifilamentary Nb/sub 3/Sn (scaled for the same Nb content) have been achieved. Values of J/sub c/ approximately 10/sup 5/ A/cm/sup 2/ at 12 T, 5 x 10/sup 4/ A/cm/sup 2/ at 14 T, and 2 x 10/sup 3/ A/cm/sup 2/ at 18 T are observed for a material with Cu--40 wt.% Nb--20 wt.% Sn with respect to Cu. The physical characteristics of the starting materials and some advantages of the cold-powder-metallurgy process are discussed.

• Research Organization: Francis Bitter National Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
• OSTI ID: 6182963
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 34:11; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPARATIVE EVALUATIONS
COMPOSITE MATERIALS
COPPER
CRITICAL CURRENT
CURRENTS
DATA
ELECTRIC CURRENTS
ELEMENTS
FABRICATION
FILAMENTS
INFORMATION
METALLURGY
METALS
NIOBIUM
POWDER METALLURGY
QUANTITY RATIO
REFRACTORY METALS
SUPERCONDUCTING COMPOSITES
TIN
TRANSITION ELEMENTS