NDLI: Studies On Preparation And Characterization Of Hts Current Leads Using Multifilamentary Ag And Ag-Alloy Sheathed (Bi,Pb)-2223 Superconducting Tapes

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Studies On Preparation And Characterization Of Hts Current Leads Using Multifilamentary Ag And Ag-Alloy Sheathed (Bi,Pb)-2223 Superconducting Tapes

Content Provider	CUSAT-Thesis
Advisor	Dr.Syamaprasad,U
Researcher	Aloysius, R P
Abstract	The application vistas of superconductors have widened verymuch since the discovery of high TC superconductors (HTS) as many of theapplications can be realised at 77 K rather than going down to 4.2 K, theliquid He temperature. One such application is the HTS current lead which isused to connect a superconducting system with a room temperature powersource. Minimising heat leak to the cryogenic environment is the mainadvantage of introducing current leads into superconducting systems. Theproperties of HTSS likes zero resistance (avoiding joule heating) and verylow thermal conductivity (minimized conductive heat transfer) make themideal candidates to be used as current leads. There are two forms of HTScurrent leads. (i) bulk form (tube or rod) prepared either from YBCO orBSCCO and (ii) tape form prepared from Bi-2223 multifilamentary tapes.The tape form of current leads has many advantages with respect to themechanical and thermal stability related criteria. Crucial information onvarious aspects of HTS current lead development are not available in theliterature as those are kept proprietary by various companies around theworld. The present work has been undertaken to tailor the properties ofmultifilamentary tapes for the current lead application and to optimise theprocessing parameters of the same for enhanced critical current density andfield tolerance. Also it is the aim of the present investigation is to prepareprototype current leads engineered for operation in conduction cooled modeand test them for operational stability
File Format	PDF
Language	English
Publisher Institution	Cochin University Of Science And Technology
Access Restriction	Open
Subject Keyword	superconductivity High -Tc superconductors BSCCO system HTS current leads 2223 phase.
Content Type	Text
Educational Degree	Doctor of Philosophy (Ph.D.)
Resource Type	Thesis

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