Effects of the IV a element additions on composite-processed Nb/sub 3/Sn

Conference · Fri Jan 01 04:00:00 EST 1982 · Adv. Cryog. Eng.; (United States)

OSTI ID:6268787

Tachikawa, K; SeKine, H; Tijima, Y

This study, aimed at the research being done to improve the critical current density of composite-processed Nb/sub 3/Sn in high magnetic fields, gives a review of results recently achieved on the effects of IVa elements addition to Nb/sub 3/ with a Cu-Sn or Cu-Sn-Ga matrix. Titanium has also been added to the matrix. Experimental procedures are given; the metallurgical aspects and the compositions of the Nb/sub 3/Sn layer with different core and matrix are analyzed. It is found that: IVa elements added to the niobium core increase the growth rate of Nb/sub 3/Sn two three times and prevent the grain coarsening of Nb/sub 3/Sn at high reaction temperatures; the addition of titanium or hafnium increases the H /SUB c2/ by about 4 T; the addition of titanium to the matrix improves the high-field properties of Nb/sub 3/Sn without deteriorating the ductility of the core; a simultaneous addition of hafnium and gallium is most effective in enhancing the critical current density in high fields. Results for zirconium addition are also presented.

• Research Organization: National Research Institute for Metals, Ibaraki
• OSTI ID: 6268787
• Report Number(s): CONF-810835-
• Conference Information: Journal Name: Adv. Cryog. Eng.; (United States) Journal Volume: 28
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
CRITICAL FIELD
CRYOGENICS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
GALLIUM ADDITIONS
GALLIUM ALLOYS
HAFNIUM ADDITIONS
HAFNIUM ALLOYS
MAGNETIC FIELDS
METALLURGICAL EFFECTS
NIOBIUM ALLOYS
PHYSICAL PROPERTIES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TIN ALLOYS
TITANIUM ADDITIONS
TITANIUM ALLOYS
WIRES
ZIRCONIUM ADDITIONS
ZIRCONIUM ALLOYS