http://www.ub.edu/cmematerials/ca/taxocsv0/coral ca http://www.ub.edu/cmematerials/ca/content/pigment-coral <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/d%C3%BAs-espec%C3%ADfic" typeof="skos:Concept" property="rdfs:label skos:prefLabel">D&#039;ús específic</a></div><div class="field-item even"><a href="/cmematerials/ca/taxocsv0/pigment" typeof="skos:Concept" property="rdfs:label skos:prefLabel">Pigment</a></div><div class="field-item odd"><a href="/cmematerials/ca/taxocsv0/zirc%C3%B3" typeof="skos:Concept" property="rdfs:label skos:prefLabel">Zircó</a></div><div class="field-item even"><a href="/cmematerials/ca/taxocsv0/coral" typeof="skos:Concept" property="rdfs:label skos:prefLabel">Coral</a></div></div></div><div class="field field-name-field-nomenclatura field-type-text field-label-above"><div class="field-label">Nomenclatura:&nbsp;</div><div class="field-items"><div class="field-item even"><p>Pigment rosa de ferro o pink-coral, DCMA 14-44-5</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><strong>Composició química : </strong>(Zr,Fe)SiO₄</p> <p>La composició del pigment coral 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>ZrO₂</td> <td>55</td> </tr><tr><td>SiO₂</td> <td>23</td> </tr><tr><td>Fe₂O₃</td> <td>17</td> </tr><tr><td>HfO₂</td> <td>2,2</td> </tr></tbody></table><p><span style="line-height: 1.6em;">Òxids amb composició inferior al 1%: Al₂O₃, Y₂O₃, MgO, ThO₂, Nb₂O₅, La..Lu.</span></p> <p><span style="line-height: 1.6em;">​</span><strong>Matèries primeres : </strong>S'obté per reacció de ZrO₂ amb òxids de ferro tipus Fe₂O₃(hematites) o FeO·OH·nH₂O (limonita) i SiO₂per obtenir l'estructura del zircó.</p> <p><strong>Productes :</strong> Pigment rosa coral de ferro en dissolusió sòlida (Zr,Fe)SiO₄ o ZrSiO₄amb inclusions. Pertany a la familia del zircó amb tetraedres de silici units per àtoms de Zr⁴⁺amb coordinació 8</p> <p><strong>Estructura de zircó </strong></p> <p><img alt="" src="http://www.ub.edu/cmematerials/sites/default/files/UnitatEstructural/Pigment%20coral.jpg" style="width: 425px; height: 415px;" /></p> <p><strong>Estructures cristal·lines : </strong>Rosa o pink-coral de ferro (Zr,Fe)SiO₄ (14-44-5) encara es discuteix si el ferro està de solució sòlida o es una inclusió o les dues hipòtesis a la vegada. Els clorurs i fluorurs de sodi catalitzen la reacció. Presenten gran estabilitat.</p> <p><strong>Observacions:</strong> L'estructura del zircó consisteix en cadenes alternades de tetraedres de SiO4 i dodecaedres de ZrO₈ que comparteixen una aresta en el eix c. Les cadenes estan unides lateralment compartint arestes entre dodecaedres, cada poliedre de ZrO₈comparteix dues arestes amb els grups SiO₄, quatre arestes amb els altre dos dodecaedres i forma cadenes de dodecaedres en la direcció de l'eix b. Els paràmetres de cel·la són: a=b= 0,6604 nm i c = 0,5979 nm.</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/441" 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/Pigment%20coral.jpg" width="5987" height="3728" alt="" /></div></div></div><div class="field field-name-field-difraccio-raigs-x-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>Presenta l'estructura del Zircó amb restes d'hematita.</p> </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-/442" 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/Pigment%20coral.jpg" width="1024" height="750" alt="" title="Microgafia Nº1" /></div></div></div> </div> </div> </div></div><div class="field-item odd"><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-/443" 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/Pigment%20coral2.jpg" width="1024" height="750" 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/Pigment%20coral1.jpg" style="width: 541px; height: 538px;" />​</p> </div></div></div> </div> </div> </div></div><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-/444" 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/Pigment%20coral3.jpg" width="1024" height="750" alt="" title="Micrografia Nº3" /></div></div></div> </div> </div> </div></div><div class="field-item odd"><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-/445" 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/Pigment%20coral4.jpg" width="1024" height="750" alt="" title="Micrografia Nº4" /></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/Pigment%20coral4.jpg" style="width: 541px; height: 535px;" />​</p> <p>EDS 4. partícula</p> </div></div></div> </div> </div> </div></div><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-microscopia-electronica- clearfix" about="/cmematerials/ca/field-collection/field-g-microscopia-electronica-/446" 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/Pigment%20coral5.jpg" width="1024" height="750" alt="" title="Micrografia Nº5" /></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/Pigment%20coral5.jpg" style="width: 541px; height: 538px;" />​</p> </div></div></div> </div> </div> </div></div></div></div></div></div></fieldset> <fieldset class="field-group-tab group-proptiques collapsible collapsed form-wrapper" id="node_materials_rss_group_proptiques"><legend><span class="fieldset-legend">Propietats òptiques</span></legend><div class="fieldset-wrapper"><div class="field field-name-field-observaciones-prop-optique 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><img alt="" src="http://www.ub.edu/cmematerials/sites/default/files/Pigments/Pigment%20coral.jpg" style="width: 622px; height: 474px;" /></p> <div><strong>Estandards de colors:</strong></div> <div> </div> <div> <table border="1" cellpadding="1" cellspacing="1" style="width: 500px;"><tbody><tr><td class="rtecenter">L*</td> <td class="rtecenter">36.09</td> </tr><tr><td class="rtecenter">a*</td> <td class="rtecenter">21.25</td> </tr><tr><td class="rtecenter">b*</td> <td class="rtecenter">12.30</td> </tr></tbody></table><p> </p> <table border="1" cellpadding="1" cellspacing="1" style="width: 500px;"><tbody><tr><td class="rtecenter">R </td> <td class="rtecenter">122,12</td> </tr><tr><td class="rtecenter">G</td> <td class="rtecenter">71,05</td> </tr><tr><td class="rtecenter">B</td> <td class="rtecenter">66,20</td> </tr></tbody></table></div> <p> </p> </div></div></div></div></fieldset> </div></div><ul class="links inline"><li class="translation_es first last"><a href="/cmematerials/es/content/pigmento-coral" title="Pigmento coral" class="translation-link">Español</a></li> </ul> Thu, 23 May 2013 07:55:05 +0000 editor 79 at http://www.ub.edu/cmematerials http://www.ub.edu/cmematerials/ca/content/pigment-coral#comments