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US 10,453,590 B2Granted
Superconductor and method for superconductor manufacturing
AssigneeUniversity of Houston System
InventorVenkat Selvamanickam
Life of this patent
Estimating the term…
Abstract
Disclosed is a superconducting article comprising a silver overlayer consisting of no more than about 20% of grains over about 1 μm, having a minimum Vickers micro-hardness value of about 100, and a porosity of less than about 1%. A method of manufacturing a superconducting tape is disclosed as comprising, deposition of silver, oxygenation at about 400° C. for about 30 minutes, slitting, deposition of silver at a temperature of less than about 250° C., and application of copper.
Claims17
A superconducting tape comprising:
- a substrate;
- a biaxially-textured buffer layer overlying the substrate;
- a superconducting film on the buffer layer;
- and
- a silver layer deposited on the superconducting film, comprising:
- an oxygenated first silver layer comprising a porosity of less than about 1%, and
- a second silver layer formed on the first silver layer, wherein the second silver layer is not oxygenated,
- wherein the silver layer comprises less than about 20% of silver grains over about 1 μm in size.
5 more elements
A superconducting tape comprising:
- a substrate;
- a biaxially-textured buffer layer overlying the substrate;
- a superconducting film on the buffer layer;
- and
- a silver layer deposited on the superconducting film, comprising:
- an oxygenated first silver layer, and
- a final silver layer disposed above the first silver layer, wherein the final silver layer is not oxygenated.
4 more elements
A superconducting tape comprising:
- a substrate;
- a biaxially-textured buffer layer overlying the substrate;
- a superconducting film on the buffer layer;
- and
- a silver layer deposited on the superconducting film, comprising:
- a first silver layer comprising a porosity of less than about 1%, and
- a second silver layer deposited on the first silver layer, wherein the second silver layer is not oxygenated, and wherein the silver layer comprises less than about 20% of silver grains over about 1 μm in size.
4 more elements
A superconducting tape comprising:
- a substrate;
- a biaxially-textured buffer layer overlying the substrate;
- a superconducting film on the buffer layer;
- and
- a silver layer deposited on the superconducting film, comprising:
- a first silver layer, and
- a final silver layer disposed above the first silver layer, wherein the final silver layer is not oxygenated;
- wherein the first silver layer comprises a porosity of less than about 1%.
5 more elements
A superconducting tape comprising:
- a substrate;
- a biaxially-textured buffer layer overlying the substrate;
- a superconducting film on the buffer layer;
- and
- a silver layer deposited on the superconducting film, comprising:
- a first silver layer, and
- a final silver layer disposed above the first silver layer, wherein the final silver layer is not oxygenated;
- wherein the silver layer has a minimum Vickers micro-hardness value of about 100.
5 more elements
A superconducting tape comprising:
- a substrate;
- a biaxially-textured buffer layer overlying the substrate;
- a superconducting film on the buffer layer;
- and
- a silver layer deposited on the superconducting film, comprising:
- an oxygenated first silver layer;
- and
- a second silver layer deposited on the first silver layer, wherein the second silver layer is not oxygenated.
5 more elements
A superconducting tape comprising:
- a substrate;
- a biaxially-textured buffer layer overlying the substrate;
- a superconducting film on the buffer layer;
- and
- a silver layer deposited on the superconducting film, comprising:
- a first silver layer;
- and
- a second silver layer deposited on the first silver layer, wherein the second silver layer is not oxygenated;
- wherein the first silver layer comprises a porosity of less than about 1%.
6 more elements
A superconducting tape comprising:
- a substrate;
- a biaxially-textured buffer layer overlying the substrate;
- a superconducting film on the buffer layer;
- and
- a silver layer deposited on the superconducting film, comprising:
- a first silver layer;
- and
- a second silver layer deposited on the first silver layer, wherein the second silver layer is not oxygenated;
- wherein the silver layer has a minimum Vickers micro-hardness value of about 100.
6 more elements
A superconducting tape comprising:
- a substrate;
- a biaxially-textured buffer layer overlying the substrate;
- a superconducting film on the buffer layer;
- and
- a silver layer deposited on the superconducting film, comprising:
- an oxygenated first silver layer and a final silver layer, wherein the final silver layer is not oxygenated.
3 more elements
A superconducting tape comprising:
- a substrate;
- a biaxially-textured buffer layer overlying the substrate;
- a superconducting film on the buffer layer;
- and
- a silver layer deposited on the superconducting film, comprising:
- a first silver layer and a final silver layer,
- wherein the final silver layer is not oxygenated;
- and
- wherein the first silver layer comprises a porosity of less than about 1%.
6 more elements
A superconducting tape comprising:
- a substrate;
- a biaxially-textured buffer layer overlying the substrate;
- a superconducting film on the buffer layer;
- and
- a silver layer deposited on the superconducting film, comprising:
- a first silver layer and a final silver layer,
- wherein the final silver layer is not oxygenated;
- and
- wherein the silver layer has a minimum Vickers micro-hardness value of about 100.
6 more elements
Dependencies are inferred from the claim text.