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AssigneeAmerican Superconductor Corporation
InventorsLawrence J. Masur, Donald R. Parker, Eric R. Podtburg, Peter R. Roberts, Ronald D. Parrella, Gilbert N. Riley, Jr., Steven Hancock
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The invention features high performing composite superconducting oxide articles that can be produced from OPIT precursors substantially without poisoning the superconductor. In general, the superconducting oxide is substantially surrounded by a matrix material. The matrix material contains a first constraining material including a noble metal and a second metal. The second metal is a relatively reducing metal which lowers the overall oxygen activity of the matrix material and the article at a precursor process point prior to oxidation of the second metal. The second metal is substantially converted to a metal oxide dispersed in the matrix during or prior to a first phase conversion heat treatment but after formation of the composite, creating an ODS matrix.
A composite superconducting article comprising:
A composite superconducting article comprising an oxide superconductor substantially surrounded by a first constraining material wherein said first constraining material includes a noble metal and a metal oxide, wherein said metal oxide includes a metal including aluminum, magnesium, sodium, potassium, calcium, strontium, barium, yttrium, scandium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, dysprosium, erbium, ytterbium, lutetium, titanium, zirconium, hafnium, vanadium, niobium, tantalum, silicon, germanium, tin, lead, gallium, indium, thallium, manganese, antimony, or zinc, and the first constraining material contains less than 0.5 volume percent of said metal oxides,
A composite superconducting article comprising an oxide superconductor substantially surrounded by a matrix including a first constraining material which includes a noble metal and a metal oxide, wherein said matrix contains less than 0.3 volume percent of metal oxide particles including said metal oxides,
A composite superconducting article comprising a plurality of filaments including an oxide superconductor, said plurality of filaments substantially surrounded by a first constraining material wherein said first constraining material consists essentially of silver and a metal oxide, wherein said metal oxide is an oxide of aluminum, magnesium, sodium, potassium, calcium, strontium, barium, yttrium, scandium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, dysprosium, erbium, ytterbium, lutetium, titanium, zirconium, hafnium, vanadium, niobium, tantalum, silicon, germanium, tin, lead, gallium, indium, thallium, manganese, antimony, or zinc, and the first constraining material contains less than 0.3 volume percent of said metal oxides,
Dependencies are inferred from the claim text.