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Title: Method and etchant to join ag-clad BSSCO superconducting tape

Patent ·
OSTI ID:872192
 [1];  [2];  [3]
  1. Hinsdale, IL
  2. Downers Grove, IL
  3. Hsinchu, TW
+ Show Author Affiliations

A method of removing a silver cladding from high temperature superconducting material clad in silver (HTS) is disclosed. The silver clad HTS is contacted with an aqueous solution of HNO.sub.3 followed by an aqueous solution of NH.sub.4 OH and H.sub.2 O.sub.2 for a time sufficient to remove the silver cladding from the superconducting material without adversely affecting the superconducting properties of the superconducting material. A portion of the silver cladding may be masked with a material chemically impervious to HNO.sub.3 and to a combination of NH.sub.4 OH and H.sub.2 O.sub.2 to preserve the Ag coating. A silver clad superconductor is disclosed, made in accordance with the method discussed.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
DOE Contract Number:
W-31109-ENG-38
Assignee:
University of Chicago (Chicago, IL)
Patent Number(s):
US 5882536
OSTI ID:
872192
Country of Publication:
United States
Language:
English

References (8)

Melt-formed superconducting joints for Nb3Sn tape journal October 1993
Recent issues in fabrication of high-Tc magnets and long-length multifilament conductors journal March 1994
Superconducting joints formed between powder-in-tube Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub z//Ag tapes journal March 1993
Diffusion Bonding of Bi-Pb-Sr-Ca-Cu-O High- T c Superconductors journal August 1990
The powder-in-tube processing and properties of Bi-2223 journal September 1993
A study of joining Ag/BSCCO superconducting tapes journal February 1995
High temperature superconductor joins journal March 1991
Fabrication of superconducting joints for Bi-2212 pancake coils journal March 1993

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