Improvements in critical current densities of internal tin diffusion process Nb/sub 3/Sn wires by additions of third elements

Conference · Fri Mar 01 04:00:00 EST 1985 · IEEE Trans. Magn.; (United States)

OSTI ID:6388447

Yoshizaki, K; Fujiwara, F; Hashimoto, Y; Imaizumi, M; Miyashita, S; Tayuchi, O; Wakata, M

Improvements in critical current densities of internal tin diffusion process Nb/sub 3/Sn multifilamentary wires have been attempted by indium and titanium additions. The Nb/sub 3/Sn wires with the indium addition to the Sn core and the titanium addition to the Cu matrix have been fabricated. The indium addition increases critical current density (Jc) at each field compared with pure Nb/sub 3/Sn wire, and Jc at higher fields increases with increasing filament diameter. An overall Jc of 6.2x10/sup 4/ A/cm/sup 2/ at 12T and 4.2K is obtained for the 4.2..mu..m-filament indium addition wire reacted at 750/sup 0/ C-50h. The titanium addition increases the Nb/sub 3/Sn layer growth rate and Jc in fields over 13T. An overall Jc of 3.0x10/sup 4/ A/cm/sup 2/ at 15T and 4.2K is obtained for the 11.7..mu..mfilament titanium addition wire. Moreover, the simultaneous indium addition to the titanium addition wire produces further improvement in Jc. The indium and titanium addition Nb/sub 3/Sn wires are the most favorable superconductors for generating magnetic field over 10T.

• Research Organization: Materials and Electronic Device Laboratory, Mitsubishi Electric Corporation Miyashimo, Sagamihara, Kanagawa
• OSTI ID: 6388447
• Report Number(s): CONF-840937-
• Conference Information: Journal Name: IEEE Trans. Magn.; (United States) Journal Volume: MAG 21:2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALLOYS
CRITICAL CURRENT
CURRENT DENSITY
CURRENTS
DIFFUSION
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELEMENTS
FABRICATION
FILAMENTS
INDIUM
METALLURGICAL EFFECTS
METALS
NIOBIUM ALLOYS
PERFORMANCE
PHYSICAL PROPERTIES
SUPERCONDUCTING WIRES
SUPERCONDUCTIVITY
THERMAL DIFFUSION
TIN ALLOYS
TITANIUM
TRANSITION ELEMENTS
WIRES