{"id":45,"date":"2014-06-06T13:29:21","date_gmt":"2014-06-06T05:29:21","guid":{"rendered":"http:\/\/zirconia-ceramics.com\/?page_id=45"},"modified":"2014-06-06T13:46:03","modified_gmt":"2014-06-06T05:46:03","slug":"zro2-toughened-ceramic","status":"publish","type":"page","link":"https:\/\/zirconia-ceramics.com\/cs\/tvrzena-keramika-zro2\/","title":{"rendered":"Tvrzen\u00e1 keramika Zro2"},"content":{"rendered":"

Keramika z oxidu zirkoni\u010dit\u00e9ho (ZTA) vykazuje oproti keramice z oxidu hlinit\u00e9ho v\u00fdrazn\u00e9 zlep\u0161en\u00ed pevnosti a hou\u017eevnatosti.Typick\u00fd obsah je od 10% do 20% zirkonu. Kdy\u017e keramikou pror\u016fst\u00e1 trhlina, m\u011bn\u00ed se v oblasti trhliny rystalick\u00e1 struktura \u010d\u00e1stic zirkonu z metastabiln\u00ed tetragon\u00e1ln\u00ed f\u00e1ze na stabiln\u00ed monoklinickou f\u00e1zi. tato zm\u011bna zv\u011bt\u0161uje objem \u010d\u00e1stic p\u0159ibli\u017en\u011b o 3-4% a vyvol\u00e1v\u00e1 tlakov\u00e1 nap\u011bt\u00ed v matrici oxidu hlinit\u00e9ho. Tato nap\u011bt\u00ed n\u00e1sledn\u011b trhlinu uzav\u0159ou a p\u016fsob\u00ed jako energetick\u00e1 bari\u00e9ra dal\u0161\u00edho r\u016fstu trhliny. P\u0159\u00eddavek zirkonia do matrice oxidu hlinit\u00e9ho zvy\u0161uje lomovou hou\u017eevnatost dvojn\u00e1sobn\u011b a m\u016f\u017ee se zlep\u0161it a\u017e \u010dty\u0159n\u00e1sobn\u011b, zat\u00edmco pevnost se v\u00edce ne\u017e zdvojn\u00e1sob\u00ed. keramick\u00e9 sou\u010d\u00e1sti tvrzen\u00e9 Zro2 jsou dra\u017e\u0161\u00ed ne\u017e ty z alfa oxidu hlinit\u00e9ho. Maj\u00ed v\u0161ak cenov\u011b v\u00fdhodn\u00e9 \u0159e\u0161en\u00ed pro n\u00e1ro\u010dn\u00e1 prost\u0159ed\u00ed d\u00edky zv\u00fd\u0161en\u00e9 \u017eivotnosti a v\u00fdkonnosti sou\u010d\u00e1stek.<\/p>\n

m\u016f\u017eeme tak\u00e9 vyrobit keramiku ZTA (keramiku na b\u00e1zi oxidu zirkoni\u010dit\u00e9ho) podle va\u0161eho po\u017eadavku.<\/p>\n

N\u00ed\u017ee je fotografie pro ZTA keramick\u00e9 oblo\u017een\u00ed pro odoln\u00e9 proti opot\u0159eben\u00ed, kter\u00e9 obsahuj\u00ed asi 20% zirkonu a 80% alumina.The velikost je 150 * 100 * 50mm<\/p>\n

\"Zirkonov\u00e1<\/a><\/p>","protected":false},"excerpt":{"rendered":"

Zirconia Toughened Alumina (ZTA) ceramic show considerable improvement in strength and toughness over alumina ceramics.Typical content is from 10% to 20% zirconia. When a crack grows through the ceramic,the zirconia particles rystal structure in the region of the crack changes from the metastable tetragonal phase to the stable monoclinic phase.The change increases the volume of […]<\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-45","page","type-page","status-publish","czr-hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/zirconia-ceramics.com\/cs\/wp-json\/wp\/v2\/pages\/45"}],"collection":[{"href":"https:\/\/zirconia-ceramics.com\/cs\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/zirconia-ceramics.com\/cs\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/zirconia-ceramics.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zirconia-ceramics.com\/cs\/wp-json\/wp\/v2\/comments?post=45"}],"version-history":[{"count":6,"href":"https:\/\/zirconia-ceramics.com\/cs\/wp-json\/wp\/v2\/pages\/45\/revisions"}],"predecessor-version":[{"id":53,"href":"https:\/\/zirconia-ceramics.com\/cs\/wp-json\/wp\/v2\/pages\/45\/revisions\/53"}],"wp:attachment":[{"href":"https:\/\/zirconia-ceramics.com\/cs\/wp-json\/wp\/v2\/media?parent=45"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}