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US 5,180,707 AGranted
Method for synthesis of high T.sub.c superconducting materials by oxidation and press coating of metallic precursor alloys
AssigneeMassachusetts Institute of Technology
InventorsWei Gao, John B. Vander Sande
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Abstract
A superconductor oxide composite is prepared using a press coating technique. The coated layers on various substrates exhibit good adhesion, textured microstructure, and improved J.sub.c.
Claims32
A method for synthesis of oxide superconductor composites comprising:
- preparing a metallic precursor alloy containing metallic constituents of the oxide superconductor and a noble metal;
- oxidizing the precursor alloy;
- press coating the oxidized precursor onto a substrate at a temperature and pressure sufficient to obtain an adherent oxide superconductor composite;
- and
- reannealing the oxide superconductor composite.
2 more elements
A method for synthesis of a Bi--Pb--Sr--Ca--Cu--O superconductor composite comprising:
- preparing a metallic precursor BiPbSrCaCu/noble metal precursor alloy;
- oxidizing the precursor alloy;
- press coating the oxidized precursor onto a substrate at a pressure sufficient to obtain an adherent Bi--Pb--Sr--Ca--Cu--O superconductor composite;
- and reannealing the Bi--Pb--Sr--Ca--Cu--O superconductor composite.
1 more element
A method for synthesis of oxide superconductor composites comprising:
- press coating the oxidized precursor/noble metal composite onto a substrate at a temperature and pressure sufficient to obtain an adherent oxide superconductor composite;
- and
- reannealing the oxide superconductor composite.
A method for synthesis of a textured oxide superconductor composites comprising:
- preparing a metallic precursor alloy containing metallic constituents of the oxide superconductor and a noble metal;
- oxidizing the precursor alloy;
- pressure coating the oxidized precursor onto a substrate at a temperature and pressure sufficient to obtain an adherent oxide superconductor composite;
- annealing the oxide superconductor composite;
- and
- subjecting the oxide superconductor composite to repeated pressing and annealing steps in order to optimize texture.
3 more elements
Dependencies are inferred from the claim text.