Stability of multi-core MgB2/Ti/Cu/SS wires
Stability of 19-filaments MgB2/Ti/Cu/SS wires carrying the transport currents has been examined. Properties of two identical wires annealed at 600 °C/2.5 h and 800 °C/0.5 h were compared. It was found that annealing conditions influence not only the current carrying capacity of MgB2 filaments but al...
| Autores: | , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2011 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/54108 |
| Acesso em linha: | http://hdl.handle.net/10261/54108 |
| Access Level: | acceso abierto |
| Resumo: | Stability of 19-filaments MgB2/Ti/Cu/SS wires carrying the transport currents has been examined. Properties of two identical wires annealed at 600 °C/2.5 h and 800 °C/0.5 h were compared. It was found that annealing conditions influence not only the current carrying capacity of MgB2 filaments but also affect the inter-diffusion at Ti/Cu and Cu/SS interfaces, which is worsening the electrical and thermal conductivities of composite elements. Consequently, differences in wire's resistances and I-V quenches were measured, which are correlating well with experimentally estimated minimum quench energy and normal zone propagation velocity. © 2010 Elsevier Ltd. All rights reserved. |
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