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US 6,784,362 B1Granted
Polymer encapsulated ceramic superconductors
AssigneeAmerican Superconductor Corporation
InventorsDavid M. Buczek, Marco Nassi
Life of this patent
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Abstract
The invention features a superconducting ceramic conductor for use in a preselected fluid cryogen. The conductor includes a composite ceramic superconducting wire having an outer surface along its length and a sealing structure hermetically surrounding the outer surface to prevent the cryogen from infiltrating into the wire and degrading its superconducting properties. The sealing. structure includes a cured polymer layer encircling the outside surface of the wire.
Claims21
A superconducting article, comprising:
- a ceramic superconductor in the form of a superconducting tape, the ceramic superconductor having a length and an outer surface along its length;
- and
- a sealing structure comprising a cured polymer layer encircling the outer surface of the ceramic superconductor, the cured polymer layer being configured to form a seal to prevent a cryogenic fluid at a pressure of about one atmosphere from infiltrating into the ceramic superconductor through the outer surface of the ceramic superconductor,
- wherein the superconducting article is in the form of a cable.
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A superconducting article, comprising:
- a ceramic superconductor in the form of a superconducting tape, the ceramic superconductor having a length and an outer surface along its length;
- and
- a sealing structure comprising a cured polymer layer that is applied to the outer surface of the ceramic superconductor to form a seal that permits the article to withstand thermal cycling when exposed to a fluid cryogen at a pressure of at least about one atmosphere without degrading the current carrying capability of the ceramic superconductor by more than 10%.
- wherein the superconducting article is in the form of a cable.
1 more element
Dependencies are inferred from the claim text.