Method of preparing composite superconducting wire
An improved method of preparing composite multifilament superconducting wire of Nb/sub 3/Sn in a copper matrix which 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.
- Assignee:
- The United States of America as represented by the United States Department of Energy
- Patent Number(s):
- US 4532703
- Application Number:
- TRN: 85-026976
- OSTI ID:
- 6486219
- Resource Relation:
- Patent File Date: Filed date 24 Apr 1981; Other Information: PAT-APPL-257013
- Country of Publication:
- United States
- Language:
- English
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Improved method of preparing composite superconducting wire
Method of preparing composite superconducting wire
Related Subjects
GENERAL PHYSICS
36 MATERIALS SCIENCE
SUPERCONDUCTING WIRES
CHEMICAL COMPOSITION
FABRICATION
COPPER ALLOYS
DUCTILITY
FILAMENTS
MAGNET COILS
NIOBIUM ALLOYS
QUANTITY RATIO
RODS
SUPERCONDUCTING COMPOSITES
TIN ALLOYS
ALLOYS
COMPOSITE MATERIALS
ELECTRIC COILS
ELECTRICAL EQUIPMENT
EQUIPMENT
MATERIALS
MECHANICAL PROPERTIES
TENSILE PROPERTIES
WIRES
420201* - Engineering- Cryogenic Equipment & Devices
360101 - Metals & Alloys- Preparation & Fabrication