Protection of oxide superconductors from degradation
AssigneeBritish Technology Group Limited
InventorsStuart B. Lyon, Beverley J. Hepburn
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Abstract
A method of treating an oxide superconductor to prevent degradation thereof comprises treating the superconductor with a solution of a metal which is capable of being oxidized by the superconductor to form on those regions of the surface area of the superconductor treated with the solution an insulating, non-porous protective film of an oxide which is stable against further oxidation.
Claims16
A method of treating an oxide superconductor to prevent degradation thereof characterized in that it comprises dipping the superconductor in a solution of metal ions, selected from the group consisting of Mn.sup.2+, Ti.sup.3+, Pb.sup.2+ and Sn.sup.2+, having a pH of less than 6 and simultaneously applying an external potential to form on those regions of the surface area of the superconductor treated with the solution an insulating, non-porous protective film of an oxide which is stable against further oxidation.
A method of treating an oxide superconductor to prevent degradation thereof characterized in that it comprises dipping the superconductor in a solution of metal ions, selected from the group consisting of Mn.sup.2+, Ti.sup.3+, Pb.sup.2+ and Sn.sup.2+, having a pH of less than 6 and simultaneously applying an external voltage to oxidize said metal.
A method of treating an oxide superconductor to prevent degradation thereof as claimed in any one of the preceding claims characterised in that the time for which the superconductor is treated with the treatment solution is in the range 1 to 10 minutes.
Dependencies are inferred from the claim text.