Ductile alloy and process for preparing composite superconducting wire
- Ames, IA
An alloy for the commercial production of ductile superconducting wire is prepared by melting together copper and at least 15 weight percent niobium under non-oxygen-contaminating conditions, and rapidly cooling the melt to form a ductile composite consisting of discrete, randomly distributed and orientated dendritic-shaped particles of niobium in a copper matrix. As the wire is worked, the dendritric particles are realigned parallel to the longitudinal axis and when drawn form a plurality of very fine ductile superconductors in a ductile copper matrix. The drawn wire may be tin coated and wound into magnets or the like before diffusing the tin into the wire to react with the niobium. Impurities such as aluminum or gallium may be added to improve upper critical field characteristics.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA; Iowa State Univ., Ames, IA (United States)
- DOE Contract Number:
- W-7405-ENG-82
- Assignee:
- United States of America as represented by Department of Energy (Washington, DC)
- Patent Number(s):
- US 4378330
- OSTI ID:
- 864527
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
alloy
process
preparing
composite
superconducting
wire
commercial
production
prepared
melting
copper
15
weight
percent
niobium
non-oxygen-contaminating
conditions
rapidly
cooling
melt
form
consisting
discrete
randomly
distributed
orientated
dendritic-shaped
particles
matrix
dendritric
realigned
parallel
longitudinal
axis
drawn
plurality
fine
superconductors
coated
wound
magnets
diffusing
react
impurities
aluminum
gallium
added
improve
upper
critical
field
characteristics
composite superconducting
weight percent
longitudinal axis
superconducting wire
copper matrix
field characteristics
critical field
preparing composite
percent niobium
shaped particles
commercial product
rapidly cool
aligned parallel
conducting wire
drawn wire
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