GB1029424A - Improvements in superconductors - Google Patents
Improvements in superconductorsInfo
- Publication number
- GB1029424A GB1029424A GB6528/63A GB652863A GB1029424A GB 1029424 A GB1029424 A GB 1029424A GB 6528/63 A GB6528/63 A GB 6528/63A GB 652863 A GB652863 A GB 652863A GB 1029424 A GB1029424 A GB 1029424A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heating
- foil
- spiral
- nb3sn
- foils
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000002887 superconductor Substances 0.000 title abstract 3
- 239000011888 foil Substances 0.000 abstract 12
- 238000010438 heat treatment Methods 0.000 abstract 10
- 230000009467 reduction Effects 0.000 abstract 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 4
- 229910000657 niobium-tin Inorganic materials 0.000 abstract 4
- 229910052786 argon Inorganic materials 0.000 abstract 2
- 239000000919 ceramic Substances 0.000 abstract 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 238000005097 cold rolling Methods 0.000 abstract 2
- 239000011261 inert gas Substances 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 2
- 238000005096 rolling process Methods 0.000 abstract 2
- 238000004804 winding Methods 0.000 abstract 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/01—Manufacture or treatment
- H10N60/0184—Manufacture or treatment of devices comprising intermetallic compounds of type A-15, e.g. Nb3Sn
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/20—Permanent superconducting devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Laminated Bodies (AREA)
Abstract
A non-brittle and bendable superconductor is formed by mechanically reducing a planer Nb supporting member, e.g. by rolling or by using swaging apparatus or dies, simultaneously or thereafter applying a layer of Sn to the Nb supporting surface, heating the Sn and Nb, e.g. at 800 to 1100 DEG C., and controlling the duration of heating and controlling the temperature above the melting point of Sn to form a Nb3Sn stratum at the Nb-Sn interface. The mechanical reduction increases the wettability of the Nb to molten Sn. Wettability may be further improved by using a reducing agent such as Mg as part of the Sn coating. Nb may be rolled down to foil and clad with Sn foil by cold rolling reductions. Reduction in thickness may be in excess of 95% e.g. 98%. The cladded combination of Nb and Sn which may be in ribbon form may be folded along its centre line to sandwich the Sn and wound into a tight spiral for heating in an inert gas. Afterwards, the spiral is unwound ready for fabrication. To prevent Sn leaking during heating, the ribbon, prior to winding into a spiral and heating, may be coated at least in part with a refractory wash such as MgO. In Example 1, vacuum annealed Nb foils are sandwiched with Sn foils, rolled and heated in argon at 950 DEG C. for 30 minutes. In Example 2, a Nb foil is placed over the Sn of a Nb foil clad with Sn. The product is locked between ceramic blocks and heated in a vacuum furnace at 973 DEG C. for 60 minutes. The Nb3Sn may be used in making solenoids or in shielding and containing magnetic fields.ALSO:A non-brittle and bendable superconductor is formed by mechanically reducing a planar Nb supporting member, e.g. by rolling or by using swaging apparatus or dies, simultaneously or thereafter applying a layer of Sn to the Nb supporting surface, heating the Sn and Nb, e.g. at 800 DEG to 1100 DEG C., and controlling the duration of heating and controlling the temperature above the melting point of Sn to form a Nb3Sn stratum at the Nb-Sn interface. The mechanical reduction increases the wettability of the Nb to molten Sn. Wettability may be further improved by using a reducing agent such as Mg as part of the Sn coating. Nb may be rolled down to foil and clad with Sn foil by cold rolling reductions. Reduction in thickness may be in excess of 95%, e.g. 98%. The cladded combination of Nb and Sn which may be in ribbon form may be folded along its centre line to sandwich the Sn and wound into a tight spiral for heating in an inert gas. Afterwards, the spiral is unwound ready for fabrication. To prevent Sn leaking during heating, the ribbon, prior to winding into a spiral and heating, may be coated at least in part with a refractory wash such as MgO. In Example 1, vacuum annealed Nb foils are sandwiched with Sn foils, rolled and heated in argon at 950 DEG C. for 30 minutes. In Example 2, a Nb foil is placed over the Sn of a Nb foil clad with Sn. The product is locked between ceramic blocks and heated in a vacuum furnace at 973 DEG C. for 60 minutes. The Nb3Sn may be used in making solenoids or in shielding and containing magnetic fields.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US188177A US3293076A (en) | 1962-04-17 | 1962-04-17 | Process of forming a superconductor |
| US193281A US3293009A (en) | 1962-05-08 | 1962-05-08 | Niobium stannide superconductor product |
| US207320A US3218693A (en) | 1962-07-03 | 1962-07-03 | Process of making niobium stannide superconductors |
| US225784A US3296684A (en) | 1962-09-24 | 1962-09-24 | Method of forming intermetallic superconductors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1029424A true GB1029424A (en) | 1966-05-11 |
Family
ID=27497743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6528/63A Expired GB1029424A (en) | 1962-04-17 | 1963-02-18 | Improvements in superconductors |
Country Status (6)
| Country | Link |
|---|---|
| CH (1) | CH460968A (en) |
| DE (1) | DE1298829B (en) |
| FR (1) | FR83596E (en) |
| GB (1) | GB1029424A (en) |
| NL (1) | NL291618A (en) |
| SE (1) | SE327006B (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1065688B (en) * | 1959-09-17 | Tiltmann Langley Limited Redhill Surrey (Großbritannien) | Brush for use in tinning metal surfaces | |
| DE689880C (en) * | 1938-06-10 | 1940-04-05 | Kloeckner Humboldt Deutz Akt G | Process for tinning slide bearings |
-
0
- NL NL291618D patent/NL291618A/xx unknown
-
1963
- 1963-02-18 GB GB6528/63A patent/GB1029424A/en not_active Expired
- 1963-04-04 DE DEN22986A patent/DE1298829B/en active Pending
- 1963-04-10 CH CH456363A patent/CH460968A/en unknown
- 1963-05-07 FR FR933990A patent/FR83596E/en not_active Expired
- 1963-05-08 SE SE05048/63A patent/SE327006B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE327006B (en) | 1970-08-10 |
| CH460968A (en) | 1968-08-15 |
| NL291618A (en) | |
| FR83596E (en) | 1964-09-04 |
| DE1298829B (en) | 1969-07-03 |
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