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Title: Improved method of preparing composite superconducting wire

Abstract

An improved method of preparing composite multifilament superconducting wire of Nb/sub 3/Sn in a copper matrix eliminates the necessity of coating the drawn wire with tin. A generalized cylindrical billet of an alloy of copper containing at least 15 weight percent niobium, present in the copper as discrete, randomly distributed and oriented dendritic-shaped particles, is provided with at least one longitudinal opening which is filled with tin to form a composite drawing rod. The drawing rod is then drawn to form a ductile composite multifilament wire containing a filament of tin. The ductile wire containing the tin can then be wound into magnet coils or other devices before heating to diffuse the tin through the wire to react with the niobium forming Nb/sub 3/Sn. Also described is an improved method for making large billets of the copper-niobium alloy by consumable-arc casting.

Inventors:
; ; ; ; ;
Issue Date:
OSTI Identifier:
6927535
Assignee:
Dept. of Energy TIC; ERA-06-004029; EDB-81-001938
DOE Contract Number:  
W-7405-ENG-82
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; SUPERCONDUCTING WIRES; FABRICATION; COPPER ALLOYS; MAGNET COILS; NIOBIUM ALLOYS; SURFACE COATING; TIN ALLOYS; ALLOYS; DEPOSITION; ELECTRIC COILS; ELECTRICAL EQUIPMENT; EQUIPMENT; WIRES 420201* -- Engineering-- Cryogenic Equipment & Devices

Citation Formats

Verhoeven, J.D., Gibson, E.D., Finnemore, D.K., Ostenson, J.E., Schmidt, F.A., and Owen, C.V. Improved method of preparing composite superconducting wire. United States: N. p., 1979. Web.
Verhoeven, J.D., Gibson, E.D., Finnemore, D.K., Ostenson, J.E., Schmidt, F.A., & Owen, C.V. Improved method of preparing composite superconducting wire. United States.
Verhoeven, J.D., Gibson, E.D., Finnemore, D.K., Ostenson, J.E., Schmidt, F.A., and Owen, C.V. Wed . "Improved method of preparing composite superconducting wire". United States.
@article{osti_6927535,
title = {Improved method of preparing composite superconducting wire},
author = {Verhoeven, J.D. and Gibson, E.D. and Finnemore, D.K. and Ostenson, J.E. and Schmidt, F.A. and Owen, C.V.},
abstractNote = {An improved method of preparing composite multifilament superconducting wire of Nb/sub 3/Sn in a copper matrix eliminates the necessity of coating the drawn wire with tin. A generalized cylindrical billet of an alloy of copper containing at least 15 weight percent niobium, present in the copper as discrete, randomly distributed and oriented dendritic-shaped particles, is provided with at least one longitudinal opening which is filled with tin to form a composite drawing rod. The drawing rod is then drawn to form a ductile composite multifilament wire containing a filament of tin. The ductile wire containing the tin can then be wound into magnet coils or other devices before heating to diffuse the tin through the wire to react with the niobium forming Nb/sub 3/Sn. Also described is an improved method for making large billets of the copper-niobium alloy by consumable-arc casting.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {10}
}