Title :
Properties of multifilamentary Nb/sub 3/Sn fiber-reinforced superconductors for high field pulsed magnets
Author :
Tateishi, H. ; Arai, K. ; Agatsuma, K.
Author_Institution :
Electrotech. Lab., Tsukuba, Japan
fDate :
6/1/1995 12:00:00 AM
Abstract :
We are developing Nb/sub 3/Sn fiber-reinforced superconductors (FRS) for high field pulsed magnets. Multifilamentary FRS are fabricated by sputtering niobium and bronze around 22 tungsten fibers of 20-/spl mu/m diameter. The conductors are then heat-treated in an electric furnace and are solder-filled after plating copper chemically. Critical current densities of FRS have been measured up to 14.5 T. We have investigated the effect of heat-treatment conditions, tin concentration of bronze and titanium addition into niobium. Tensile stress-strain measurement showed that FRS has excellent stress toughness.<>
Keywords :
critical current density (superconductivity); fibre reinforced composites; heat treatment; multifilamentary superconductors; niobium alloys; sputter deposition; stress-strain relations; superconducting device testing; superconducting magnets; tensile strength; tin alloys; type II superconductors; 14.5 T; 20 mum; Nb/sub 3/Sn; bronze; critical current densities; electric furnace; heat-treatment; high field pulsed magnets; multifilamentary fiber-reinforced superconductors; solder-filling; sputtering; stress toughness; tensile stress-strain measurement; type II superconductors; Conductors; Furnaces; Magnets; Multifilamentary superconductors; Niobium; Resistance heating; Sputtering; Tensile stress; Tin; Tungsten;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
