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Strain tolerant microfilamentary superconducting wire

Patent ·
OSTI ID:868671
 [1];  [2];  [1];  [3];  [1]
  1. Ames, IA
  2. Tuscon, AZ
  3. Mankato, MN
+ Show Author Affiliations
A strain tolerant microfilamentary wire capable of carrying superconducting currents is provided comprising a plurality of discontinuous filaments formed from a high temperature superconducting material. The discontinuous filaments have a length at least several orders of magnitude greater than the filament diameter and are sufficiently strong while in an amorphous state to withstand compaction. A normal metal is interposed between and binds the discontinuous filaments to form a normal metal matrix capable of withstanding heat treatment for converting the filaments to a superconducting state. The geometry of the filaments within the normal metal matrix provides substantial filament-to-filament overlap, and the normal metal is sufficiently thin to allow supercurrent transfer between the overlapped discontinuous filaments but is also sufficiently thick to provide strain relief to the filaments.
Research Organization:
Ames Laboratory (AMES), Ames, IA; Iowa State University, Ames, IA (US)
DOE Contract Number:
W-7405-ENG-82
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA)
Patent Number(s):
US 5189260
Application Number:
07/651,551
OSTI ID:
868671
Country of Publication:
United States
Language:
English

References (4)

Superconducting critical currents for thick, clean superconductor—normal-metal—superconductor junctions journal July 1980
Remnant resistance in TSUEI'S composite superconductors journal March 1975
Crystallization of amorphous Bi cuprate fibers to superconducting Bi 2 Sr 2 Ca 1 Cu 2 O 8 journal February 1990
Preparation of superconducting Bi‐Sr‐Ca‐Cu‐O fibers journal July 1989

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/505/174/
allow
amorphous
binds
capable
carrying
carrying superconducting
compaction
comprising
conducting current
conducting material
conducting wire
continuous filament
converting
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diameter
discontinuous
discontinuous filaments
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filament-to-filament
filaments
filaments formed
form
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geometry
heat
heat treatment
interposed
length
magnitude
material
matrix
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matrix provides
metal
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microfilamentary
normal
normal metal
overlap
overlapped
plurality
provide
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provides substantial
relief
strain
strain tolerant
strong
substantial
sufficiently
sufficiently strong
sufficiently thick
superconducting
superconducting currents
superconducting material
superconducting wire
supercurrent
temperature
temperature superconducting
thick
tolerant
tolerant microfilamentary
transfer
treatment
wire
wire capable
withstand
withstanding