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Title: Method for producing microcomposite powders using a soap solution

A method for producing microcomposite powders for use in superconducting and non-superconducting applications. A particular method to produce microcomposite powders for use in superconducting applications includes the steps of: (a) preparing a solution including ammonium soap; (b) dissolving a preselected amount of a soluble metallic such as silver nitrate in the solution including ammonium soap to form a first solution; (c) adding a primary phase material such as a single phase YBC superconducting material in particle form to the first solution; (d) preparing a second solution formed from a mixture of a weak acid and an alkyl-mono-ether; (e) adding the second solution to the first solution to form a resultant mixture; (f) allowing the resultant mixture to set until the resultant mixture begins to cloud and thicken into a gel precipitating around individual particles of the primary phase material; (g) thereafter drying the resultant mixture to form a YBC superconducting material/silver nitrate precursor powder; and (h) calcining the YBC superconducting material/silver nitrate precursor powder to convert the silver nitrate to silver and thereby form a YBC/silver microcomposite powder wherein the silver is substantially uniformly dispersed in the matrix of the YBC material.
Inventors:
 [1];  [2]
  1. (Coker, AL)
  2. (Mobile, AL)
Issue Date:
OSTI Identifier:
870247
Assignee:
United States of America as represented by Secretary of (Washington, DC) NETL
Patent Number(s):
US 5482918
Research Org:
National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
Country of Publication:
United States
Language:
English
Subject:
method; producing; microcomposite; powders; soap; solution; superconducting; non-superconducting; applications; particular; produce; steps; preparing; including; ammonium; dissolving; preselected; amount; soluble; metallic; silver; nitrate; form; adding; primary; phase; material; single; ybc; particle; formed; mixture; weak; acid; alkyl-mono-ether; resultant; allowing; set; begins; cloud; thicken; precipitating; individual; particles; thereafter; drying; precursor; powder; calcining; convert; substantially; uniformly; dispersed; matrix; resultant mixture; silver nitrate; solution including; individual particle; particle form; substantially uniformly; conducting material; substantially uniform; superconducting material; single phase; precursor powder; soluble metal; composite powders; weak acid; uniformly dispersed; phase material; solution form; microcomposite powders; individual particles; selected amount; uniformly disperse; thereafter drying; microcomposite powder; producing microcomposite; /505/252/427/428/

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