Title :
Changes of Tc, Jc and stoichiometry of Nb3Sn phase formed during internal tin diffusion process
Author :
Glowacki, Bartek A.
Author_Institution :
Interdisciplinary Res. Centre in Superconductivity, Cambridge Univ., UK
fDate :
7/1/1996 12:00:00 AM
Abstract :
A multifilamentary wire containing 6660 Nb filaments was manufactured by the internal tin process. Studies on the formation of the Nb3Sn layers in relation to Tc, Jc and conductor morphology are presented. The results were discussed on the base of microscopic observations of the development of Cu-Sn phases during multi-stage diffusion processes. Magnetic properties, in correlation with cross-sectional microstructure were studied in order to define the inter-filamentary bridging during heat treatment
Keywords :
critical current density (superconductivity); crystal microstructure; crystal morphology; diffusion; heat treatment; multifilamentary superconductors; niobium alloys; stoichiometry; superconducting materials; superconducting transition temperature; tin alloys; Nb3Sn; Nb3Sn phase; conductor morphology; critical current density; cross-sectional microstructure; heat treatment; inter-filamentary bridging; internal Sn diffusion process; internal tin diffusion process; magnetic properties; multi-stage diffusion processes; multifilamentary wire; stoichiometry; superconducting transition temperature; Conductors; Diffusion processes; Magnetic properties; Manufacturing processes; Microscopy; Microstructure; Morphology; Niobium; Tin; Wire;
Journal_Title :
Magnetics, IEEE Transactions on
