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Contenido archivado el 2024-04-19

FABRICATION OF HIGH TEMPERATURE SUPERCONDUCTING WIRES AND TAPES

CORDIS proporciona enlaces a los documentos públicos y las publicaciones de los proyectos de los programas marco HORIZONTE.

Los enlaces a los documentos y las publicaciones de los proyectos del Séptimo Programa Marco, así como los enlaces a algunos tipos de resultados específicos, como conjuntos de datos y «software», se obtienen dinámicamente de OpenAIRE .

Resultados aprovechables

Improving the properties of long wires and tapes fabricated from high temperature superconducting ceramics will enable the assembly of demonstrator devices generating significant magnetic fields at 77 K. This can only be achieved by fabricating composite superconducting wire with very uniform properties, substantially improved mechanical strength to resist degradation by Lorentz forces in operation, and in which the problem of flux creep at temperatures above 30K has been reduced. These problems are addressed by development of novel cladding materials for improved mechanical integrity, and the design of new composite superconducting core materials with increased flux pinning by carefully controlled precipitation and mechanical deformation processes. Work so far includes the investigation of each stage in the processes required to fabricate superconducting coils from TI-1223 superconducting material; including powder synthesis and composition, mechanical processing, the relationship between microstructure and superconducting properties and strategies for achieving grain alignment in order to optimize a process route. A novel melt process for T1-1223 tapes has been studied in detail. The technical aspects of coil fabrication have also been investigated and the properties of some demonstrator coils measured over a wide range of magnetic fields. Engineering critical current values over 3000 Acm{-2} have been reproducibly achieved, and demonstrator coils more than 10 m in length have been tested in high magnetic fields.

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