American Superconductor Corporation

Steven Hancock

Gilbert N Riley, Jr

Peter R Roberts

Eric R Podtburg

Lawrence J Masur

Ronald D Parrella

Donald R Parker

Qi Li

Craig J Christopherson

Christopher A Craven

Peter D Antaya

Kenneth L DeMoranville

Jeffrey Michael Seuntjens

Jennifer H Garrant

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.

Performance of oxide dispersion strengthened superconductor composites

A multifilamentary superconductor composite having a high fill factor is formed from a plurality of stacked monofilament precursor elements, each of which includes a low density superconductor precursor monofilament. The precursor elements all have substantially the same dimensions and characteristics, and are stacked in a rectilinear configuration and consolidated to provide a multifilamentary precursor composite. The composite is thereafter thermomechanically processed to provide a superconductor composite in which each monofilament is less than about 50 microns thick.

Fine uniform filament superconductors

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Worcester, MA, United States of America

Steven Hancock