GB995710A - Improvements in or relating to superconductive materials - Google Patents

Improvements in or relating to superconductive materials

Info

Publication number
GB995710A
GB995710A GB35464/63A GB3546463A GB995710A GB 995710 A GB995710 A GB 995710A GB 35464/63 A GB35464/63 A GB 35464/63A GB 3546463 A GB3546463 A GB 3546463A GB 995710 A GB995710 A GB 995710A
Authority
GB
United Kingdom
Prior art keywords
super
sheath
lead
conductor
aluminium
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
Application number
GB35464/63A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB995710A publication Critical patent/GB995710A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H10N60/01—Manufacture or treatment
    • H10N60/0128—Manufacture or treatment of composite superconductor filaments
    • 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

Abstract

995710 Super-conductors INTERNATIONAL BUSINESS MACHINES CORPORATION 9 Sept 1963 [10 Sept 1962] 35464/63 Headings H1A AS and A4D A super-conductive composite electrical conductor is made by placing a metal superconductive at a given temperature in a sheath of metal which is not super-conducting at that temperature, reducing the cross-sectional area to form a unit conductor, grouping a plurality of units into a bundle and reducing the overall cross-section of the bundle. By repeated applications of this process filaments of super-conductor may be produced whose diameter is of the same order as the magnetic field penetration depth of the super-conductor. The diameter reduction may be achieved by swaging or drawing. In one embodiment the filaments are of lead and the sheath of aluminium. As the number of applications of the process increases, the resulting wire tends to take on super-conducting properties intermediate those of the two materials involved, e.g. a transition temperature of 3À4‹K was achieved, as compared with 7À2‹K for lead and 1À1‹K for aluminium. The method may therefore be used in the production of cryotron switching devices operating at specific temperatures. For producing a device having a high critical field, the electrons both of the filament material and the sheath material should have a small mean free path. In the ultimate limit the sheath material can be an insulator e.g. silver chloride. The filament material may be lead. In another such device the sheath may be an aluminium-zinc alloy and the filaments may be of a lead-bismuth alloy.
GB35464/63A 1962-09-10 1963-09-09 Improvements in or relating to superconductive materials Expired GB995710A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22239662A 1962-09-10 1962-09-10

Publications (1)

Publication Number Publication Date
GB995710A true GB995710A (en) 1965-06-23

Family

ID=22832010

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35464/63A Expired GB995710A (en) 1962-09-10 1963-09-09 Improvements in or relating to superconductive materials

Country Status (3)

Country Link
JP (1) JPS425739B1 (en)
CH (1) CH436504A (en)
GB (1) GB995710A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1640505B1 (en) * 1966-01-27 1971-09-30 Imp Metal Ind Kynoch Ltd METHOD FOR MANUFACTURING A COMPOSITE ELECTRICAL CONDUCTOR
DE1765286B1 (en) * 1967-04-27 1971-12-02 Imp Metal Ind Kynoch Ltd METHOD FOR MANUFACTURING SUPRAL CONDUCTORS
US3702373A (en) * 1971-03-05 1972-11-07 Comp Generale Electricite Intrinsically stable superconductive conductor
US3996661A (en) * 1973-06-22 1976-12-14 Siemens Aktiengesellschaft Method for the manufacture of a superconductor having an intermetallic two element compound

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1640505B1 (en) * 1966-01-27 1971-09-30 Imp Metal Ind Kynoch Ltd METHOD FOR MANUFACTURING A COMPOSITE ELECTRICAL CONDUCTOR
DE1765286B1 (en) * 1967-04-27 1971-12-02 Imp Metal Ind Kynoch Ltd METHOD FOR MANUFACTURING SUPRAL CONDUCTORS
US3702373A (en) * 1971-03-05 1972-11-07 Comp Generale Electricite Intrinsically stable superconductive conductor
US3996661A (en) * 1973-06-22 1976-12-14 Siemens Aktiengesellschaft Method for the manufacture of a superconductor having an intermetallic two element compound

Also Published As

Publication number Publication date
CH436504A (en) 1967-05-31
JPS425739B1 (en) 1967-03-08

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