Core microstructure and strain state analysis in MgB2 wires with different metal sheaths

 

Autores
Sobrero, Cesar Enrique; Malachevsky, Maria Teresa; Serquis, Adriana Cristina
Tipo de recurso
artículo
Estado
Versión publicada
Año de publicación
2015
País
Argentina
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio
CONICET Digital (CONICET)
Descripción
We present a detailed analysis of the effect of the sheath materials on the microstructure, and superconducting properties of MgB2 wires produced by the powder-in-tube method (PIT). We reduced commercial MgB2 powder by attrition milling in nitrogen atmosphere using tungsten carbide balls and obtained powders with grain sizes lower than 150 nm and different strains states through this process. Several Ti, Sstainless steel and copper monofilamentary wires were prepared using these powders by the PIT method. We investigated different thermal treatments and mechanical paths during the processing of the wires for the enhancement of the critical currents. The superconducting properties were determined by magnetization measurements in a SQUID magnetometer. The correlation between the thermal treatments, structure and superconducting properties is discussed.
Idioma
inglés
OAI Identifier
oai:ri.conicet.gov.ar:11336/43928
Enlace del recurso
http://hdl.handle.net/11336/43928
Nivel de acceso
Acceso abierto
Materia
MAGNESIUM DIBORIDE
WIRES
SHEATH MATERIALS
Recubrimientos y Películas
Ingeniería de los Materiales
INGENIERÍAS Y TECNOLOGÍAS