Multifilamentary niobium tin superconductor tape

Conference · Sat Mar 01 04:00:00 EDT 1975 · IEEE Trans. Magn., v. MAG-11, no. 2, pp. 283-286

OSTI ID:4103793

Brisbin, P H; Coles, W D

An effective method for the fabrication of multifilamentary Nb$sub 3$Sn tape was developed. Filamentary superconductive paths are produced in otherwise standard commercial superconductor tape by the chemical milling of separator slots through the Nb$sub 3$Sn layer. The present multifilament configuration features a matrix of ten parallel helical superconducting paths along the length of the tape; filament width and interfilament separation are approximately 1.2 mm and 0.4 mm respectively. Thirty-five multifilamentary tapes 0.4 m long were produced. Complete arrays of continuous, fully defined filaments were reliably formed. Tapes tested as small pancake coils (6 to 10 T) demonstrated the integrity and continuity of the matrix and showed that critical current was sustained in direct proportion to retained superconductor. Interesting behavioral differences resulted from filamentization: critical current anisotropy was reversed, and the slope of the I/sub c/ versus H curve was reduced. Other tests found qualitative evidence of substantially improved stability in the multifilamentary tape. (auth)

• Research Organization: Intermagnetics General Corp., Guilderland, NY
• NSA Number: NSA-33-017697
• OSTI ID: 4103793
• Conference Information: Journal Name: IEEE Trans. Magn., v. MAG-11, no. 2, pp. 283-286
• Country of Publication: United States
• Language: English

Related Subjects

*NIOBIUM BASE ALLOYS-- SUPERCONDUCTIVITY
*SUPERCONDUCTING FILMS-- FABRICATION
*TIN ALLOYS-- SUPERCONDUCTIVITY
360101* --Materials--Metals & Alloys--Preparation & Fabrication
CRITICAL CURRENT
FILAMENTS
FILMS
N42220 --Engineering--Facilities & Equipment--Cryogenic & Superconducting Equipment & Devices
N50220* --Metals
Ceramics
& Other Materials--Metals & Alloys--Preparation & Fabrication
N50230 --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
SHEETS