{"id":80594,"date":"2018-03-10T00:04:19","date_gmt":"2018-03-10T00:04:19","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/orden-y-desorden-de-defectos-puntuales-y-su-influencia-en-las-propiedades-mecanicas-del-sistema-y203-zr02\/"},"modified":"2018-03-10T00:04:19","modified_gmt":"2018-03-10T00:04:19","slug":"orden-y-desorden-de-defectos-puntuales-y-su-influencia-en-las-propiedades-mecanicas-del-sistema-y203-zr02","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/orden-y-desorden-de-defectos-puntuales-y-su-influencia-en-las-propiedades-mecanicas-del-sistema-y203-zr02\/","title":{"rendered":"\u00aborden y desorden de defectos puntuales y su influencia en las propiedades mec\u00e1nicas del sistema y203-zr02\u00bb"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Angela Gallardo Lopez <\/strong><\/h2>\n<p>En este trabajo se han investigado las propiedades mec\u00e1nicas a alta temperatura de monocristales de y2o3-zro2(circonia itriada) con alto contenido en itria(24 a 32 mol%). El motivo principal de este estudio fue la observaci\u00f3n de anomal\u00edas mec\u00e1nicas en este rango de composici\u00f3n, imposibles de explicar con los modelos con que se contaba hasta el momento.  asi, mediante experimentos de deformaci\u00f3n en compresi\u00f3n uniaxial se han estimado los par\u00e1metros mec\u00e1nicos que caracter\u00edzan el comportamiento del material; exponente de tensi\u00f3n, energ\u00eda de activaci\u00f3n y l\u00edmite el\u00e1stico.  la microscop\u00eda electronica de transmisi\u00f3n ha permitido el an\u00e1lisis de la subestructura de dislocaciones, principal responsable de la deformaci\u00f3n pl\u00e1stica. Con todo esto se ha logrado elaborar un modelo te\u00f3rico de deformaci\u00f3n que consigne explicar las anomal\u00edas mec\u00e1nicas que dieron pie a este estudio.  paralelamente, se ha alcanzado a resolver con \u00e9xito el problema de las fases en el material. Partiendo de patrones de difracci\u00f3n de electrones con dispersi\u00f3n difusa observados experimentalmente, y con la ayuda de la simulaci\u00f3n por ordenador, se ha descubierto el estado previo hacia una superestructura de tipo zr3y4o12 en este rango de composiciones.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>\u00aborden y desorden de defectos puntuales y su influencia en las propiedades mec\u00e1nicas del sistema y203-zr02\u00bb<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 \u00aborden y desorden de defectos puntuales y su influencia en las propiedades mec\u00e1nicas del sistema y203-zr02\u00bb <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Angela Gallardo Lopez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Sevilla<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 14\/09\/1999<\/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>Arturo Dom\u00ednguez Rodr\u00edguez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: rafael M\u00e1rquez delgado <\/li>\n<li> San Juan  nu\u00f1ez Jos\u00e9 M\u00aa (vocal)<\/li>\n<li>\u00f3scar Antonio Ruano mari\u00f1o (vocal)<\/li>\n<li>Fernando Guiberteau cabanillas (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Angela Gallardo Lopez En este trabajo se han investigado las propiedades mec\u00e1nicas a alta temperatura de monocristales [&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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