{"id":83791,"date":"2018-03-10T00:08:00","date_gmt":"2018-03-10T00:08:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/sonoelectroquimica-influencia-del-transporte-de-materia-en-la-electrodeposicion-de-plomo-sobre-un-sustrato-de-cobre\/"},"modified":"2018-03-10T00:08:00","modified_gmt":"2018-03-10T00:08:00","slug":"sonoelectroquimica-influencia-del-transporte-de-materia-en-la-electrodeposicion-de-plomo-sobre-un-sustrato-de-cobre","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/sonoelectroquimica-influencia-del-transporte-de-materia-en-la-electrodeposicion-de-plomo-sobre-un-sustrato-de-cobre\/","title":{"rendered":"Sonoelectroquimica: influencia del transporte de materia en la electrodeposicion de plomo sobre un sustrato de cobre"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Elena Agullo Sanchez <\/strong><\/h2>\n<p>En esta tesis se ha estudiado la influencia de tres tipos diferentes de agitaci\u00f3n (mec\u00e1nica, ultras\u00f3nica y la combinaci\u00f3n de ambas) sobre el coeficiente de transporte de materia y sobre las caracter\u00edsticas del dep\u00f3sito de plomo sobre electrodos de cobre.  los resultados obtenidos muestran que los ultrasonidos siempre proporcionan mayores velocidades de transporte de materia que la agitaci\u00f3n mec\u00e1nica.  por otra parte, las mejores condiciones de electrodeposici\u00f3n (tanto sobre el soporte de cobre plano como sobre la esponja de cobre tridimensional) se obtuvieron a 35\u00c2\u00ba c utilizando la combinaci\u00f3n de los ultrasonidos y la agitaci\u00f3n mec\u00e1nica. Los ultrasonidos aumentan la calidad del dep\u00f3sito mediante la disminuci\u00f3n del n\u00famero y el tama\u00f1o de dendritas. Sin embargo, el tiempo de electrodeposici\u00f3n excesivamente grande empleado con las agitaciones ultras\u00f3nicas y combinada, o tiempo de sonicaci\u00f3n, origina dep\u00f3sitos esponjosos con mala adherencia.  cuando la electrodeposici\u00f3n se realiz\u00f3 sobre el soporte tridimensional (en el que se utilizaban densidades de corriente m\u00e1s peque\u00f1as) el plomo, a la vez que se est\u00e1 depositando sobre la esponja, se disuelve debido a la acci\u00f3n corrosiva de la disoluci\u00f3n fluorob\u00f3rica de trabajo. La corrosi\u00f3n es menos notable para los dep\u00f3sitos realizados con las agitaciones ultras\u00f3nica y combinada, porque en estos el recubrimiento es liso, lo que le hace tener una superficie de contacto peque\u00f1a y, por lo tanto, el ataque de la disoluci\u00f3n se da a una avelocidad menor.  por \u00faltimo, en la reducci\u00f3n electroqu\u00edmica de l-cistina a l-ciste\u00edna, los resultados obtenidos con elelctrodo tridimensional de plomo obtenido en este trabajo aumentan, con respecto a la l\u00e1mina de plomo, en un 10% para la conversi\u00f3n en materia, en un 5% para el rendimiento en corriente, y en un 20% para la producci\u00f3n.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Sonoelectroquimica: influencia del transporte de materia en la electrodeposicion de plomo sobre un sustrato de cobre<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Sonoelectroquimica: influencia del transporte de materia en la electrodeposicion de plomo sobre un sustrato de cobre <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Elena Agullo Sanchez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Alicante<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 17\/03\/2000<\/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>Antonio Aldaz Riera<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Juan  manuel P\u00e9rez mart\u00ednez <\/li>\n<li>toribio Fernandez otero (vocal)<\/li>\n<li>enrique Fatas lahoz (vocal)<\/li>\n<li>Miguel Molina sabio (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Elena Agullo Sanchez En esta tesis se ha estudiado la influencia de tres tipos diferentes de agitaci\u00f3n [&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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