NDLI: <formula formulatype=inline><tex Notation=TeX>${rm Nb}_{3}{rm Sn}$</tex></formula> Superconductors Made by an Economical Tubular Process

Content Provider	IEEE Xplore Digital Library
Author	Gregory, E. Tomsic, M. Xuan Peng Sumption, M.D. Ghosh, A.
Copyright Year	2002
Abstract	The tubular technique for economical production of Nb₃Sn material with large numbers of subelements is being explored further by Supergenics I LLC and Hyper Tech Research Inc. The number of subelements has been raised to 271 (246 + 25) by increasing the size at which the restacking is carried out. The product exhibited no fabrication problems and was drawn down and tested at a wire diameter of 0.42 mm, where the subelements are 18 mum in diameter. Heat treatment of a 271 subelement restack has been varied and a pre heat treatment of 48 h at 575degC followed by long times at 635degC has been shown to be advantageous. Restacks with 217 subelements have been subjected to both compositional and heat treatment changes and the best results, closely approaching those found on PIT materials, have been found on samples given 500 h at 625degC.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	2602
Ending Page	2605
Page Count	4
File Size	2035604
File Format	PDF
ISSN	10518223
Volume Number	19
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Tin Superconductivity Heat treatment Niobium Superconducting materials Fabrication Stability Production Testing Wire tubular superconductors Copper niobium tantalum tin
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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