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Title: Preparation of superconductor precursor powders

Abstract

A process for the preparation of a precursor metallic powder composition for use in the subsequent formation of a superconductor. The process comprises the steps of providing an electrodeposition bath comprising an electrolyte medium and a cathode substrate electrode, and providing to the bath one or more soluble salts of one or more respective metals, such as nitrate salts of thallium, barium, calcium, and copper, which are capable of exhibiting superconductor properties upon subsequent appropriate treatment. The bath is continually energized to cause the metallic particles formed at the electrode to drop as a powder from the electrode into the bath, and this powder, which is a precursor powder for superconductor production, is recovered from the bath for subsequent treatment. The process permits direct inclusion of thallium in the preparation of the precursor powder, and yields an amorphous product mixed on an atomic scale to thereby impart inherent high reactivity. Superconductors which can be formed from the precursor powder include pellet and powder-in-tube products.

Inventors:
 [1];  [2]
  1. Littleton, CO
  2. Evergreen, CO
Issue Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
OSTI Identifier:
869877
Patent Number(s):
5413987
Assignee:
Midwest Research Institute (Kansas City, MO)
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
preparation; superconductor; precursor; powders; process; metallic; powder; composition; subsequent; formation; comprises; steps; providing; electrodeposition; bath; comprising; electrolyte; medium; cathode; substrate; electrode; soluble; salts; respective; metals; nitrate; thallium; barium; calcium; copper; capable; exhibiting; properties; appropriate; treatment; continually; energized; particles; formed; drop; production; recovered; permits; direct; inclusion; yields; amorphous; product; mixed; atomic; scale; impart; inherent; reactivity; superconductors; pellet; powder-in-tube; products; soluble salts; process permits; metallic particles; superconductor precursor; process comprises; precursor powder; soluble salt; precursor powders; metallic powder; nitrate salts; substrate electrode; subsequent formation; subsequent appropriate; bath comprising; atomic scale; particles formed; electrodeposition bath; permits direct; articles formed; appropriate treatment; nitrate salt; respective metal; superconductor product; precursor metallic; powder composition; product mix; /505/205/

Citation Formats

Bhattacharya, Raghunath, and Blaugher, Richard D. Preparation of superconductor precursor powders. United States: N. p., 1995. Web.
Bhattacharya, Raghunath, & Blaugher, Richard D. Preparation of superconductor precursor powders. United States.
Bhattacharya, Raghunath, and Blaugher, Richard D. Sun . "Preparation of superconductor precursor powders". United States. https://www.osti.gov/servlets/purl/869877.
@article{osti_869877,
title = {Preparation of superconductor precursor powders},
author = {Bhattacharya, Raghunath and Blaugher, Richard D},
abstractNote = {A process for the preparation of a precursor metallic powder composition for use in the subsequent formation of a superconductor. The process comprises the steps of providing an electrodeposition bath comprising an electrolyte medium and a cathode substrate electrode, and providing to the bath one or more soluble salts of one or more respective metals, such as nitrate salts of thallium, barium, calcium, and copper, which are capable of exhibiting superconductor properties upon subsequent appropriate treatment. The bath is continually energized to cause the metallic particles formed at the electrode to drop as a powder from the electrode into the bath, and this powder, which is a precursor powder for superconductor production, is recovered from the bath for subsequent treatment. The process permits direct inclusion of thallium in the preparation of the precursor powder, and yields an amorphous product mixed on an atomic scale to thereby impart inherent high reactivity. Superconductors which can be formed from the precursor powder include pellet and powder-in-tube products.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {1}
}

Patent:

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