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

Abstract

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.

Inventors:
 [1];  [2];  [3]
  1. Hinsdale, IL
  2. Downers Grove, IL
  3. Hsinchu, TW
Issue Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
OSTI Identifier:
872192
Patent Number(s):
5882536
Assignee:
University of Chicago (Chicago, IL)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; etchant; join; ag-clad; bssco; superconducting; tape; removing; silver; cladding; temperature; material; clad; disclosed; contacted; aqueous; solution; hno; followed; nh; oh; time; sufficient; remove; adversely; affecting; properties; portion; masked; chemically; impervious; combination; preserve; coating; superconductor; accordance; discussed; superconducting properties; conducting material; time sufficient; aqueous solution; superconducting material; temperature superconducting; adversely affect; adversely affecting; silver clad; superconducting tape; clad superconductor; /216/156/505/

Citation Formats

Balachandran, Uthamalingam, Iyer, Anand N, and Huang, Jiann Yuan. Method and etchant to join ag-clad BSSCO superconducting tape. United States: N. p., 1999. Web.
Balachandran, Uthamalingam, Iyer, Anand N, & Huang, Jiann Yuan. Method and etchant to join ag-clad BSSCO superconducting tape. United States.
Balachandran, Uthamalingam, Iyer, Anand N, and Huang, Jiann Yuan. Fri . "Method and etchant to join ag-clad BSSCO superconducting tape". United States. https://www.osti.gov/servlets/purl/872192.
@article{osti_872192,
title = {Method and etchant to join ag-clad BSSCO superconducting tape},
author = {Balachandran, Uthamalingam and Iyer, Anand N and Huang, Jiann Yuan},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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Works referenced in this record:

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