{"id":71740,"date":"2004-10-12T00:00:00","date_gmt":"2004-10-12T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/superconducting-joints-of-melt-textured-ybco-monoliths-preparation-microstructure-and-critical-currents\/"},"modified":"2004-10-12T00:00:00","modified_gmt":"2004-10-12T00:00:00","slug":"superconducting-joints-of-melt-textured-ybco-monoliths-preparation-microstructure-and-critical-currents","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/superconducting-joints-of-melt-textured-ybco-monoliths-preparation-microstructure-and-critical-currents\/","title":{"rendered":"Superconducting joints of melt-textured ybco monoliths: preparation, microstructure and critical currents"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Simona Iliescu Adriana <\/strong><\/h2>\n<p>El objetivo general de este trabajo ha sido el de obtener muestras superconductoras de alta temperatura de ybco cuyas geometr\u00edas y dimensiones superen a las obtenidas mediante t\u00e9cnicas de crecimiento cristalino. Estos materiales pueden ser integrados en maquinaria el\u00e9ctirca, sistemas de levitaic\u00f3n o limitaciones de corriente. Este objetivo ha promovido la investigaci\u00f3n hacia m\u00e9todos que permiten unir dos o m\u00e1s monodominios del material superconductor de alta temperatura ybco mediante un proceso de soldificaci\u00f3n por fundido utilizando agetnes soldantes cuyos puntos de fusi\u00f3n est\u00e1n por debajo del punto de fusi\u00f3n del material que se quiere unir, el ybco.  el primer paso en obtener soldaduras superconductoras de alta temperatura del material ybco ha sido el de conseguir un agente soldante apropiado. hemos investigado dos materiales basados en plata met\u00e1lica. An\u00e1lisis microestructural, junto con medidas de magnetorresistencia y magnetometr\u00eda hall se han realizado con el fin de encontrar las condiciones \u00f3ptimas para conseguir soldaduras superconductoras de alta temperatura de alta calidad.  para entender el proceso de difusi\u00f3n de la planta en la matriz ybco, se ha realizado un\u00c2\u00bfdetallado estudio de la influencia de los par\u00e1metros del proceso de la soldadura en la microestructura y las propiedades f\u00edsicas de las uniones superconductoras, es decir la magnetizaci\u00f3n remanenete y la densidad de corriente critica, generadas mediante este m\u00e9todo. Se ha demostrado que estos par\u00e1metros influyen tanto en la microestructura como en la spropiedades superconductoras de las uniones artificiales. Para optimizar estos par\u00e1metros se han realizado dos tipos de experimentos: enfriamiento muy r\u00e1pido y crecimiento mediante enfriamiento lento.  utilizando los experimentos de enfriamiento muy r\u00e1pido hemos conseguido determinar cuales son los par\u00e1metros que controlan la difusi\u00f3n de la plata en la matriz del material ybco. Se ha demostrado qu<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Superconducting joints of melt-textured ybco monoliths: preparation, microstructure and critical currents<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Superconducting joints of melt-textured ybco monoliths: preparation, microstructure and critical currents <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Simona Iliescu Adriana <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 10\/12\/2004<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Xavier Obradors Berenguer<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Antonio Veira jose <\/li>\n<li>angel Angurel Luis (vocal)<\/li>\n<li>david Cardwell (vocal)<\/li>\n<li>xavier Granados (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Simona Iliescu Adriana El objetivo general de este trabajo ha sido el de obtener muestras superconductoras de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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