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Title: Preparation of superconductor precursor powders

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.
 [1];  [2]
  1. (Littleton, CO)
  2. (Evergreen, CO)
Issue Date:
OSTI Identifier:
Midwest Research Institute (Kansas City, MO) NREL
Patent Number(s):
US 5413987
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Country of Publication:
United States
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