Wafer scale production of superconducting magnesium diboride thin films with high transition temperature
US-2023120408-A1 · Apr 20, 2023 · US
Co-extrusion printing of filaments for superconducting wire
US2018309041A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018309041-A1 |
| Application number | US-201816017051-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 25, 2018 |
| Priority date | Apr 29, 2015 |
| Publication date | Oct 25, 2018 |
| Grant date | — |
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Abstract
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A method of manufacturing a superconducting tape includes forming a slurry of superconducting material, forming a slurry of sacrificial material, extruding the slurries of superconducting and sacrificial materials as interdigitated stripes onto a substrate, and removing the sacrificial material to form superconducting filaments.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method of manufacturing a superconducting metal tape, comprising: forming a slurry of superconducting material; forming a slurry of sacrificial material; extruding the slurries of superconducting and sacrificial materials as interdigitated stripes onto a metal substrate; and removing the sacrificial material to form superconducting filaments. 2 . The method of claim 1 , further comprising forming the metal tape into a rotor for a synchronous machine. 3 . The method of claim 1 , wherein forming a first slurry of superconducting material comprises wherein mixing a superconductive powder into an organic solvent with a binder. 4 . The method of claim 3 , wherein mixing a superconducting powder into an organic solvent comprises mixing magnesium diboride powder into butyl carbitol. 5 . The method of claim 3 , wherein mixing a superconducting powder into an organic solvent comprises mixing magnesium diboride powder and chemical dopants into butyl carbitol 6 . The method of claim 1 , wherein forming a second slurry of sacrificial material comprises mixing a binder into a solvent. 7 . The method of claim 6 , wherein mixing a binder into a solvent comprises dissolving a cellulose binder into an organic solvent. 8 . The method of claim 1 , wherein removing the sacrificial material comprises heating the substrate and slurries to a temperature in the range of 700-800° C. 9 . The method of claim 1 , further comprising removing excess liquid from the first slurry separately from removing the sacrificial material. 10 . The method of claim 1 , wherein forming a slurry of superconducting material comprises forming two slurries of superconducting material and extruding the slurries of superconducting and sacrificial material comprises extruding the two slurries of superconducting material as adjacent stripes. 11 . The method of claim 10 , further comprising allowing the two slurries of superconducting material to react and form a superconducting compound. 12 . The method of claim 1 , wherein forming a slurry of superconducting material comprises mixing powders of two different materials to form the slurry, and removing the sacrificial material comprises sintering the slurries, which causes the powders to form a superconducting compound. 13 . The method of claim 1 , further comprising coating the substrate with a buffer layer prior to extruding the slurries. 14 . The method of claim 1 , further comprising coating the stripes of superconducting material with a top layer.
Assignees
Inventors
Classifications
Electricity · mapped topic
- H01L39/2487Primary
Electricity · mapped topic
- H10N60/202Primary
comprising metal borides, e.g. MgB2 · CPC title
- H10N60/0856Primary
of devices comprising metal borides, e.g. MgB2 · CPC title
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Frequently asked questions
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- What does patent US2018309041A1 cover?
- A method of manufacturing a superconducting tape includes forming a slurry of superconducting material, forming a slurry of sacrificial material, extruding the slurries of superconducting and sacrificial materials as interdigitated stripes onto a substrate, and removing the sacrificial material to form superconducting filaments.
- Who is the assignee on this patent?
- Palo Alto Res Ct Inc, Energy To Power Solutions E2P
- What technology area does this patent fall under?
- Primary CPC classification H01L39/2487. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Oct 25 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).