Optimization of in situ Nb/sub 3/Sn-Cu wire

Conference · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6075586

Sue, J J; Verhoeven, J D; Gibson, E D; Ostenson, J E; Finnemore, D K

In this paper we report on two aspects of our efforts to optimize large scale in situ Nb/sub 3/Sn-Cu superconductor wire. First, results will be presented which show that the as-drawn Nb filament size is critical in optimizing J/sub c/ values and depends upon the temperature of the Sn diffusion anneal. Second, laboratory size experiments show that utilizing C containers for ingot preparation results in a small C contamination and significantly lower J/sub c/ values. In order to scale-up the in situ process we have previously developed arc casting techniques capable of producing 30 kgm ingots utilizing graphite lined Cu molds. Results are presented here on efforts to reduce C contamination in these large castings by utilizing ceramic coatings on the graphite liner.

• Research Organization: Ames Lab., IA (USA)
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6075586
• Report Number(s): IS-M-342; CONF-810835-35; ON: DE82003106
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
COPPER ALLOYS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FABRICATION
NIOBIUM COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTING WIRES
TIN COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WIRES