Method of preparing composite superconducting wire
- Ames, IA
An improved method of preparing composite multifilament superconducting wire of Nb.sub.3 Sn in a copper matrix which eliminates the necessity of coating the drawn wire with tin. A generalized cylindrical billet of an alloy of copper containing at least 15 weight percent niobium, present in the copper as discrete, randomly distributed and oriented dendritic-shaped particles, is provided with at least one longitudinal opening which is filled with tin to form a composite drawing rod. The drawing rod is then drawn to form a ductile composite multifilament wire containing a filament of tin. The ductile wire containing the tin can then be wound into magnet coils or other devices before heating to diffuse the tin through the wire to react with the niobium forming Nb.sub.3 Sn. Also described is an improved method for making large billets of the copper-niobium alloy by consumable-arc casting.
- 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 United States (Washington, DC)
- Patent Number(s):
- US 4532703
- Application Number:
- 06/257,013
- OSTI ID:
- 865539
- Country of Publication:
- United States
- Language:
- English
Similar Records
Improved method of preparing composite superconducting wire
Method of preparing composite superconducting wire
Related Subjects
preparing
composite
superconducting
wire
improved
multifilament
nb
copper
matrix
eliminates
necessity
coating
drawn
generalized
cylindrical
billet
alloy
containing
15
weight
percent
niobium
discrete
randomly
distributed
oriented
dendritic-shaped
particles
provided
longitudinal
filled
form
drawing
rod
ductile
filament
wound
magnet
coils
devices
heating
diffuse
react
forming
described
billets
copper-niobium
consumable-arc
casting
magnet coils
composite superconducting
improved method
weight percent
superconducting wire
multifilament wire
copper matrix
preparing composite
percent niobium
copper containing
niobium alloy
shaped particles
conducting wire
drawn wire
/148/29/75/174/219/420/505/