Paper Titles
Effect of Co Doping on the Superconducting Properties of Overdoped (Lu0.8Ca0.2)Ba2Cu3Oz
p.108
Scaling of Resistivities in MgB2
p.113
Transport Properties over Critical Currents for Ag-Sheathed Bi2Sr2CaCu2O8 Superconductors with Different E-J Dependence
p.118
Progress of YBCO Coated Conductor in JAPN and Recent Advance of PLD and IBAD Method
p.124
MgB2 Composite Superconductors Made by Ex Situ and In Situ Process
p.131
Fabrication and Evaluation of Ag-Bi2223 Composite Tapes with Interfilamentary Resistive Barriers
p.137
Preparation and Properties of Advanced MgB2 Wires and Tapes
p.143
Sol-Gel Ink-Jet Printing Technique for Synthesis of Buffer Layers of Coated Conductors
p.153
Fabrication of Bi2Sr2Can-1CunOy / Al2O3-Particles on MgO Films by rf Magnetron Sputtering Method
p.159

MgB2 Composite Superconductors Made by Ex Situ and In Situ Process

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Abstract:

Generally, two basic routes called as in-situ and ex-situ process are used for composite MgB2 wires now. Mentioned processes have been used for making of single-core composite wires. The applied heat treatment parameters influence the microstructure of MgB2 phase, critical temperature and critical current density, but it has also decisive effect on the MgB2/metal reaction. It was found that the transport current densities are much more sensitive to the used sheath material than critical temperatures. The main factors limiting the transport current density are cracks introduced by deformation and porosity caused by the boron diffusion in ex-situ and in-situ wires, respectively.

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Periodical:

Advances in Science and Technology (Volume 47)

Pages:

131-136

DOI:

https://doi.org/10.4028/www.scientific.net/AST.47.131

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Online since:

October 2006

Authors:

Pavol Kováč, I. Hušek, T. Melišek

Keywords:

Critical Current, Critical Temperature, Ex Situ Process, In Situ Process, MgB2 Superconductor

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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