http://www.ub.edu/cmematerials/ca/taxocsv0/vitrocer%C3%A0mica ca http://www.ub.edu/cmematerials/ca/content/vitrocer%C3%A0mica <div class="field-group-tabs-wrapper field-group-tabs group-tab2 "><h2 class="element-invisible">Pestanyes verticals</h2><div class="vertical-tabs-panes"><input class="vertical-tabs-active-tab" type="hidden" /> <fieldset class="field-group-tab group-dades-generals collapsible collapsed form-wrapper" id="node_materials_rss_group_dades_generals"><legend><span class="fieldset-legend">Dades generals</span></legend><div class="fieldset-wrapper"><div class="field field-name-field-classificaci- field-type-taxonomy-term-reference field-label-above"><div class="field-label">Classificació:&nbsp;</div><div class="field-items"><div class="field-item even"><a href="/cmematerials/ca/taxocsv0/cer%C3%A0mic" typeof="skos:Concept" property="rdfs:label skos:prefLabel">Ceràmic</a></div><div class="field-item odd"><a href="/cmematerials/ca/taxocsv0/vidre" typeof="skos:Concept" property="rdfs:label skos:prefLabel">Vidre</a></div><div class="field-item even"><a href="/cmematerials/ca/taxocsv0/vitrocer%C3%A0mica" typeof="skos:Concept" property="rdfs:label skos:prefLabel">Vitroceràmica</a></div></div></div><div class="field field-name-field-primeres-materies field-type-text field-label-above"><div class="field-label">Primeres matèries:&nbsp;</div><div class="field-items"><div class="field-item even"><p>SiO₂, Al₂O₃, LiO i TiO₂.</p> </div></div></div><div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even" property="content:encoded"><p>La composició de la vitroceràmica obtinguda per FRX és:</p> <table border="1" cellpadding="1" cellspacing="1" style="width: 500px;"><tbody><tr><td>Component</td> <td>%</td> </tr><tr><td>SiO₂</td> <td>69</td> </tr><tr><td>Al₂O₃</td> <td>20</td> </tr><tr><td>ZrO₂</td> <td>2,4</td> </tr><tr><td>TiO₂</td> <td>1,7</td> </tr><tr><td>ZnO</td> <td>1,6</td> </tr><tr><td>BaO</td> <td>1,2</td> </tr></tbody></table><p><span style="line-height: 1.6em;">Òxids amb composició inferior al 1%: As₂O₃, Na₂O, K₂O, V₂O₅, Fe₂O₃ i HfO₂.</span></p> <p><strong>Productes : </strong>Silicat d'alumini i liti i òxid de titani.</p> </div></div></div></div></fieldset> <fieldset class="field-group-tab group-caracteritzacio collapsible collapsed form-wrapper" id="node_materials_rss_group_caracteritzacio"><legend><span class="fieldset-legend"> Caracterització</span></legend><div class="fieldset-wrapper"><div class="field-collection-container clearfix"><div class="field field-name-field-g-difracci-de-raigs-x field-type-field-collection field-label-above"><div class="field-label">Difracció de raigs-X:&nbsp;</div><div class="field-items"><div class="field-item even"><div class="field-collection-view clearfix view-mode-full field-collection-view-final"><div class="entity entity-field-collection-item field-collection-item-field-g-difracci-de-raigs-x clearfix" about="/cmematerials/ca/field-collection/field-g-difracci-de-raigs-x/858" typeof=""> <div class="content"> <div class="field field-name-field-difraccio-raigs-x field-type-image field-label-above"><div class="field-label">Difracció de raigs-X:&nbsp;</div><div class="field-items"><div class="field-item even"><img typeof="foaf:Image" src="http://www.ub.edu/cmematerials/sites/default/files/difraccio_de_raigs_x/Vitrocer%C3%A0mica_0.jpg" width="6052" height="3717" alt="" title="Difractograma de raigs X vitroceràmica" /></div></div></div> </div> </div> </div></div></div></div></div><div class="field-collection-container clearfix"><div class="field field-name-field-g-microscopia-optica field-type-field-collection field-label-above"><div class="field-label">Microscòpia òptica:&nbsp;</div><div class="field-items"><div class="field-item even"><div class="field-collection-view clearfix view-mode-full"><div class="entity entity-field-collection-item field-collection-item-field-g-microscopia-optica clearfix" about="/cmematerials/ca/field-collection/field-g-microscopia-optica/859" typeof=""> <div class="content"> <div class="field field-name-field-microscopia-optica field-type-image field-label-above"><div class="field-label"> Microscòpia òptica:&nbsp;</div><div class="field-items"><div class="field-item even"><img typeof="foaf:Image" src="http://www.ub.edu/cmematerials/sites/default/files/microscopia_optica/vitroceramica1_0.JPG" width="624" height="474" alt="" title="Macrografia Nº1" /></div></div></div> </div> </div> </div></div><div class="field-item odd"><div class="field-collection-view clearfix view-mode-full field-collection-view-final"><div class="entity entity-field-collection-item field-collection-item-field-g-microscopia-optica clearfix" about="/cmematerials/ca/field-collection/field-g-microscopia-optica/860" typeof=""> <div class="content"> <div class="field field-name-field-microscopia-optica field-type-image field-label-above"><div class="field-label"> Microscòpia òptica:&nbsp;</div><div class="field-items"><div class="field-item even"><img typeof="foaf:Image" src="http://www.ub.edu/cmematerials/sites/default/files/microscopia_optica/vitroceramica2_0.JPG" width="623" height="474" alt="" title="Macrografia Nº2" /></div></div></div> </div> </div> </div></div></div></div></div><div class="field-collection-container clearfix"><div class="field field-name-field-g-microscopia-electronica- field-type-field-collection field-label-above"><div class="field-label">Microscòpia electrònica de scanning:&nbsp;</div><div class="field-items"><div class="field-item even"><div class="field-collection-view clearfix view-mode-full"><div class="entity entity-field-collection-item field-collection-item-field-g-microscopia-electronica- clearfix" about="/cmematerials/ca/field-collection/field-g-microscopia-electronica-/861" typeof=""> <div class="content"> <div class="field field-name-field-microscopia-electronica-sc field-type-image field-label-above"><div class="field-label"> Microscòpia electrònica de rastreig:&nbsp;</div><div class="field-items"><div class="field-item even"><img typeof="foaf:Image" src="http://www.ub.edu/cmematerials/sites/default/files/microscopia_electronica_sc/Vitrocer%C3%A0mica_0.jpg" width="1473" height="1186" alt="" title="Micrografia Nº1" /></div></div></div> </div> </div> </div></div><div class="field-item odd"><div class="field-collection-view clearfix view-mode-full field-collection-view-final"><div class="entity entity-field-collection-item field-collection-item-field-g-microscopia-electronica- clearfix" about="/cmematerials/ca/field-collection/field-g-microscopia-electronica-/862" typeof=""> <div class="content"> <div class="field field-name-field-microscopia-electronica-sc field-type-image field-label-above"><div class="field-label"> Microscòpia electrònica de rastreig:&nbsp;</div><div class="field-items"><div class="field-item even"><img typeof="foaf:Image" src="http://www.ub.edu/cmematerials/sites/default/files/microscopia_electronica_sc/Vitrocer%C3%A0mica2_0.jpg" width="1475" height="1184" alt="" title="Micrografia Nº2" /></div></div></div><div class="field field-name-field-microscopia-electronica-de field-type-text-long field-label-above"><div class="field-label">Descripció:&nbsp;</div><div class="field-items"><div class="field-item even"><p><img alt="" src="http://www.ub.edu/cmematerials/sites/default/files/EDS/Vitrocer%C3%A0mica2.1.jpg" style="width: 697px; height: 385px;" /></p> <p>EDS 2. 1. matriu</p> <p><img alt="" src="http://www.ub.edu/cmematerials/sites/default/files/EDS/Vitrocer%C3%A0mica2.2.jpg" style="width: 697px; height: 385px;" /></p> <p>EDS 2. 2. part brillant</p> <p><img alt="" src="http://www.ub.edu/cmematerials/sites/default/files/EDS/Vitrocer%C3%A0mica2.3.jpg" style="width: 697px; height: 385px;" />​</p> <p>EDS 2.3. part clara</p> </div></div></div> </div> </div> </div></div></div></div></div></div></fieldset> <fieldset class="field-group-tab group-prgenerals collapsible collapsed form-wrapper" id="node_materials_rss_group_prgenerals"><legend><span class="fieldset-legend">Propietats generals</span></legend><div class="fieldset-wrapper"><div class="field field-name-field-densitat field-type-text field-label-above"><div class="field-label">Densitat:&nbsp;</div><div class="field-items"><div class="field-item even"><p> 2.6 g/cm³</p> </div></div></div></div></fieldset> <fieldset class="field-group-tab group-prmecaniques collapsible collapsed form-wrapper" id="node_materials_rss_group_prmecaniques"><legend><span class="fieldset-legend">Propietats mecàniques</span></legend><div class="fieldset-wrapper"><div class="field field-name-field-modul-elastic field-type-text field-label-above"><div class="field-label">Mòdul elàstic (GPa):&nbsp;</div><div class="field-items"><div class="field-item even"><p>120 GPa</p> </div></div></div><div class="field field-name-field-relacio-poisson field-type-text field-label-above"><div class="field-label">Coeficient de Poisson:&nbsp;</div><div class="field-items"><div class="field-item even"><p>0.25</p> </div></div></div><div class="field field-name-field-resis-mec-compressio field-type-text field-label-above"><div class="field-label">Resistència mecànica a compressió:&nbsp;</div><div class="field-items"><div class="field-item even"><p>123 - 370 MPa</p> </div></div></div><div class="field field-name-field-tenacitat-a-fractura field-type-text field-label-above"><div class="field-label">Tenacitat a fractura (KIc):&nbsp;</div><div class="field-items"><div class="field-item even"><p>1.6-2.1 MPa·m^1/2</p> </div></div></div><div class="field field-name-field-observaciones-pro-mecan field-type-text-with-summary field-label-above"><div class="field-label">Observacions:&nbsp;</div><div class="field-items"><div class="field-item even"><p>Mòdul de fractura : 250 MPa</p> </div></div></div></div></fieldset> <fieldset class="field-group-tab group-prtermiques collapsible collapsed form-wrapper" id="node_materials_rss_group_prtermiques"><legend><span class="fieldset-legend">Propietats tèrmiques</span></legend><div class="fieldset-wrapper"><div class="field field-name-field-coeficient-expan-lineal field-type-tablefield field-label-above"><div class="field-label">Coeficient de dilatació tèrmica lineal:&nbsp;</div><div class="field-items"><div class="field-item even"><div id="tablefield-wrapper-0" class="tablefield-wrapper"><table id="tablefield-0" class="tablefield sticky-enabled"> <thead><tr><th class="row_0 col_0"><p>A la temperatura de:</p> </th><th class="row_0 col_1"><p>Coeficient de dilatació tèrmica lineal</p> </th> </tr></thead> <tbody> <tr class="odd"><td class="row_1 col_0"><p>T_amb</p> </td><td class="row_1 col_1"><p>6.5·10^-6 /ºC</p> </td> </tr> </tbody> </table> </div></div></div></div><div class="field field-name-field-conductivitat-termica field-type-tablefield field-label-above"><div class="field-label">Conductivitat tèrmica:&nbsp;</div><div class="field-items"><div class="field-item even"><div id="tablefield-wrapper-0" class="tablefield-wrapper"><table id="tablefield-0" class="tablefield sticky-enabled"> <thead><tr><th class="row_0 col_0"><p>A la temperatura de:</p> </th><th class="row_0 col_1"><p>Conductivitat tèrmica</p> </th> </tr></thead> <tbody> <tr class="odd"><td class="row_1 col_0"><p>T_amb</p> </td><td class="row_1 col_1"><p>3.3 W/m·K</p> </td> </tr> </tbody> </table> </div></div></div></div><div class="field field-name-field-capacitat-calorifica-espec field-type-tablefield field-label-above"><div class="field-label">Capacitat calorífica específica:&nbsp;</div><div class="field-items"><div class="field-item even"><div id="tablefield-wrapper-0" class="tablefield-wrapper"><table id="tablefield-0" class="tablefield sticky-enabled"> <thead><tr><th class="row_0 col_0"><p>A la temperatura de:</p> </th><th class="row_0 col_1"><p>Capacitat calorífica específica</p> </th> </tr></thead> <tbody> <tr class="odd"><td class="row_1 col_0"><p>T_amb</p> </td><td class="row_1 col_1"><p> 975 J/kg K</p> </td> </tr> </tbody> </table> </div></div></div></div></div></fieldset> <fieldset class="field-group-htab group-prquimiques collapsible collapsed form-wrapper" id="node_materials_rss_group_prquimiques"><legend><span class="fieldset-legend">Propietats químiques</span></legend><div class="fieldset-wrapper"><div class="field field-name-field-obs-prop-quimi field-type-text-with-summary field-label-above"><div class="field-label">Observacions:&nbsp;</div><div class="field-items"><div class="field-item even"><p>Molt bona resistència a la corrosió</p> </div></div></div></div></fieldset> <fieldset class="field-group-htab group-obtencio collapsible collapsed form-wrapper" id="node_materials_rss_group_obtencio"><legend><span class="fieldset-legend">Obtenció</span></legend><div class="fieldset-wrapper"><div class="field-collection-container clearfix"><div class="field field-name-field-g-ima-obtencio field-type-field-collection field-label-above"><div class="field-label">Imatges:&nbsp;</div><div class="field-items"><div class="field-item even"><div class="field-collection-view clearfix view-mode-full field-collection-view-final"><div class="entity entity-field-collection-item field-collection-item-field-g-ima-obtencio clearfix" about="/cmematerials/ca/field-collection/field-g-ima-obtencio/799" typeof=""> <div class="content"> <div class="field field-name-field-ima-obtencio field-type-image field-label-above"><div class="field-label">Imatges:&nbsp;</div><div class="field-items"><div class="field-item even"><img typeof="foaf:Image" src="http://www.ub.edu/cmematerials/sites/default/files/ima_obtencio/Vitrocer%C3%A0mica.jpg" width="700" height="645" alt="" /></div></div></div><div class="field field-name-field-ima-obtencio-desc field-type-text-long field-label-above"><div class="field-label">Descripció:&nbsp;</div><div class="field-items"><div class="field-item even"><p>Tractament tèrmic per a l'obtenció de vitroceràmica.</p> <p>Observacions:</p> <p>(a) Refredament molt ràpid per evitar l'inici de la cristal · lització.</p> <p>(b) La velocitat de nucleació dels precipitats és elevada a baixes temperatures i la velocitat de creixement dels precipitats és elevada a temperatures altes.</p> <p>(c) Perfil del tractament tèrmic per a la fabricació de la vitroceràmica de la família <span style="font-family: Arial; font-size: 10pt; line-height: 15.6pt;"> Li</span><sub style="font-family: Arial; line-height: 15.6pt;">2</sub><span style="font-family: Arial; font-size: 10pt; line-height: 15.6pt;">O-Al</span><sub style="font-family: Arial; line-height: 15.6pt;">2</sub><span style="font-family: Arial; font-size: 10pt; line-height: 15.6pt;">0</span><sub style="font-family: Arial; line-height: 15.6pt;">3</sub><span style="font-family: Arial; font-size: 10pt; line-height: 15.6pt;">-Si0</span><sub style="font-family: Arial; line-height: 15.6pt;">2</sub><span style="font-family: Arial; font-size: 10pt; line-height: 15.6pt;">.</span></p> </div></div></div> </div> </div> </div></div></div></div></div></div></fieldset> <fieldset class="field-group-htab group-aplicacions collapsible collapsed form-wrapper" id="node_materials_rss_group_aplicacions"><legend><span class="fieldset-legend">Aplicacions</span></legend><div class="fieldset-wrapper"><div class="field-collection-container clearfix"><div class="field field-name-field-g-ima-aplicacions field-type-field-collection field-label-above"><div class="field-label">Imatges:&nbsp;</div><div class="field-items"><div class="field-item even"><div class="field-collection-view clearfix view-mode-full"><div class="entity entity-field-collection-item field-collection-item-field-g-ima-aplicacions clearfix" about="/cmematerials/ca/field-collection/field-g-ima-aplicacions/863" typeof=""> <div class="content"> <div class="field field-name-field-ima-aplicacions field-type-image field-label-above"><div class="field-label">Imatges:&nbsp;</div><div class="field-items"><div class="field-item even"><img typeof="foaf:Image" src="http://www.ub.edu/cmematerials/sites/default/files/ima_aplicacions/Vitrocer%C3%A0mica1.jpg" width="1674" height="1116" alt="" /></div></div></div> </div> </div> </div></div><div class="field-item odd"><div class="field-collection-view clearfix view-mode-full field-collection-view-final"><div class="entity entity-field-collection-item field-collection-item-field-g-ima-aplicacions clearfix" about="/cmematerials/ca/field-collection/field-g-ima-aplicacions/864" typeof=""> <div class="content"> <div class="field field-name-field-ima-aplicacions field-type-image field-label-above"><div class="field-label">Imatges:&nbsp;</div><div class="field-items"><div class="field-item even"><img typeof="foaf:Image" src="http://www.ub.edu/cmematerials/sites/default/files/ima_aplicacions/Vitrocer%C3%A0mica2_0.jpg" width="800" height="432" alt="" /></div></div></div><div class="field field-name-field-ima-aplicacions-desc field-type-text-long field-label-above"><div class="field-label">Descripció:&nbsp;</div><div class="field-items"><div class="field-item even"><p>Vitroceràmica en una cuina</p> </div></div></div> </div> </div> </div></div></div></div></div></div></fieldset> </div></div><ul class="links inline"><li class="translation_es first last"><a href="/cmematerials/es/content/vitrocer%C3%A1mica" title="Vitrocerámica" class="translation-link">Español</a></li> </ul> Fri, 31 May 2013 11:21:29 +0000 editor 111 at http://www.ub.edu/cmematerials http://www.ub.edu/cmematerials/ca/content/vitrocer%C3%A0mica#comments