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Title: Method for producing strain tolerant multifilamentary oxide superconducting wire

Patent ·
OSTI ID:869396
 [1];  [2];  [1];  [3];  [1]
  1. Ames, IA
  2. Tucson, AZ
  3. Mankato, MN
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A strain tolerant multifilamentary 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 Univ., Ames, IA (United States)
DOE Contract Number:
W-7405-ENG-82
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA)
Patent Number(s):
US 5330969
Application Number:
US patent applicaiton 07/980,759
OSTI ID:
869396
Country of Publication:
United States
Language:
English

References (5)

Remnant resistance in TSUEI'S composite superconductors journal March 1975
Preparation of superconducting Bi‐Sr‐Ca‐Cu‐O fibers journal July 1989
Metallurgical Studies and Optimization of Critical Crrent Density in Bi–(Pb)–Sr–Ca–Cu–O Superconductors journal July 1989
Superconducting critical currents for thick, clean superconductor—normal-metal—superconductor junctions journal July 1980
Crystallization of amorphous Bi cuprate fibers to superconducting Bi 2 Sr 2 Ca 1 Cu 2 O 8 journal February 1990

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method
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multifilamentary
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capable
carrying
currents
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comprising
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discontinuous
filaments
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temperature
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length
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filament
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sufficiently
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amorphous
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overlap
allow
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continuous filament
strain tolerant
sufficiently thick
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normal metal
oxide superconducting
metal matrix
provided comprising
heat treatment
superconducting material
superconducting wire
temperature superconducting
discontinuous filaments
provides substantial
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matrix capable
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/505/29/174/427/