Cirkonijs pied\u0101v\u0101 progres\u012bvus materi\u0101lu risin\u0101jumus pla\u0161am r\u016bpniecisko lietojumu kl\u0101stam. T\u0101 sast\u0101vu daudzveid\u012bba, s\u0101kot no ZTA kompoz\u012btu br\u012bnumainaj\u0101m \u012bpa\u0161\u012bb\u0101m l\u012bdz Ce-TZP iztur\u012bgaj\u0101m \u012bpa\u0161\u012bb\u0101m, nodro\u0161ina augstas veiktsp\u0113jas risin\u0101jumus, kas atbilst da\u017e\u0101d\u0101m r\u016bpniec\u012bbas vajadz\u012bb\u0101m.<\/p>\n
Piedevas veid\u0101 ra\u017eotas cirkonija keramikas meh\u0101nisk\u0101s \u012bpa\u0161\u012bbas var ietekm\u0113t daudzi faktori, tostarp izejvielu suspensijas attiec\u012bba, porain\u012bba un aglomer\u0101ti, savienojums starp sl\u0101\u0146iem un sarau\u0161an\u0101s.<\/p>\n
Keramikas bloki ir arvien popul\u0101r\u0101ka zobu restaur\u0101cijas izv\u0113le, jo tie ir iztur\u012bg\u0101ki un iztur\u012bg\u0101ki nek\u0101 citi restaur\u0101cijas materi\u0101li. Keramikas bloki var lepoties ar\u012b ar zem\u0101ku termisk\u0101s izple\u0161an\u0101s koeficientu, kas noz\u012bm\u0113, ka tie neizple\u0161as un nesa\u0161aurin\u0101s, mainoties temperat\u016brai, t\u0101p\u0113c tie ir ide\u0101li piem\u0113roti izmanto\u0161anai viet\u0101s, kas pak\u013cautas temperat\u016bras sv\u0101rst\u012bb\u0101m, piem\u0113ram, kro\u0146i un finieri. Turkl\u0101t keramikas blokus ir viegl\u0101k t\u012br\u012bt nek\u0101 citus materi\u0101lus - v\u0113l viens faktors, kas padara keramiku par pievilc\u012bgu risin\u0101jumu zob\u0101rstniec\u012bbas vajadz\u012bb\u0101m, kur\u0101m nepiecie\u0161ama iztur\u012bba.<\/p>\n
Ar CAD\/CAM ra\u017eot\u0101s piln\u012bb\u0101 keramisk\u0101s prot\u0113zes var nodro\u0161in\u0101t pacientiem ilgsto\u0161u un skaistu rezult\u0101tu, ta\u010du ne visas keramikas ir vien\u0101das. Da\u017eas keramikas \u012bpa\u0161\u012bbas ir lab\u0101k biolo\u0123iski sader\u012bgas un est\u0113tiskas nek\u0101 citas, t\u0101p\u0113c ir svar\u012bgi izv\u0113l\u0113ties ide\u0101lu materi\u0101lu katra pacienta individu\u0101laj\u0101m vajadz\u012bb\u0101m. Litija disilik\u0101ts un cirkonija oks\u012bds pa\u0161laik ir divas popul\u0101ras alternat\u012bvas, ko izmanto restaurat\u012bvai \u0101rst\u0113\u0161anai.<\/p>\n
Ta\u010du, pateicoties CAD\/CAM tehnolo\u0123iju att\u012bst\u012bbai, zob\u0101rstiem tagad ir pieejamas pla\u0161\u0101kas iesp\u0113jas. ZrO (itrija stabiliz\u0113ts cirkonijs) ir \u0101rk\u0101rt\u012bgi ciets materi\u0101ls ar vien\u0101m no augst\u0101kaj\u0101m meh\u0101niskaj\u0101m \u012bpa\u0161\u012bb\u0101m, k\u0101das jebkad re\u0123istr\u0113tas zobu keramikai, un t\u0101 lieces iztur\u012bba sasniedz 100 MPa, kas noz\u012bm\u0113, ka tas ir iztur\u012bg\u0101ks pret l\u016bzumiem nek\u0101 PFM vai uz met\u0101la b\u0101zes izgatavoti kro\u0146i. Turkl\u0101t monol\u012btais ZrO nesatur neaizsarg\u0101tus sl\u0101\u0146us, kas to sakaus\u0113 ar t\u0101diem pamata konstrukcijas materi\u0101liem k\u0101 zelts vai porcel\u0101na pamata konstrukcijas materi\u0101li, kas \u013cauj to izgatavot, izmantojot CAD\/CAM sist\u0113mas.<\/p>\n
ZTA keramika ir uzlabots cirkonija r\u016bd\u012bta alum\u012bnija oks\u012bda hibr\u012bdmateri\u0101ls, kam piem\u012bt abu materi\u0101lu priek\u0161roc\u012bbas. Lai gan tai joproj\u0101m piem\u012bt izcila iztur\u012bba pret nodilumu un uzlabota ciet\u012bba\/ciet\u012bba, kas nodro\u0161ina liel\u0101ku veiktsp\u0113ju un ilg\u0101ku kalpo\u0161anas laiku, t\u0101s cirkonija r\u016bd\u012bt\u0101 strukt\u016bra nodro\u0161ina ZTA izcilu iztur\u012bbu pret koroziju, \u013caujot tai iztur\u0113t vidi, kas var\u0113tu izn\u012bcin\u0101t citu keramiku.<\/p>\n
ZTA keramikas v\u0101rpst\u0101m, kas izgatavotas no alum\u012bnija oks\u012bda un cirkonija, ir visaugst\u0101k\u0101 padeves iztur\u012bba starp vis\u0101m progres\u012bv\u0101kaj\u0101m r\u016bpnieciskaj\u0101m keramikas izstr\u0101d\u0101jumiem, kas \u013cauj t\u0101m ilgsto\u0161i iztur\u0113t augst\u0101kas temperat\u016bras, pirms rodas boj\u0101jumi. \u0160\u012b priek\u0161roc\u012bba padara ZTA v\u0101rpstas \u012bpa\u0161i piem\u0113rotas meh\u0101niskaj\u0101m iek\u0101rt\u0101m, kur nodiluma un nolietojuma spiediens laika gait\u0101 izraisa sprieguma noguruma boj\u0101jumus.<\/p>\n
Cirkonija oks\u012bds ar pievienotu itriju k\u013c\u016bst daudz iztur\u012bg\u0101ks par standarta alum\u012bnija oks\u012bdu un sil\u012bcija nitr\u012bdu, nodro\u0161inot desmit reizes liel\u0101ku triecieniztur\u012bbu. Ja objekts ietriecas ZTA keramikas v\u0101rpst\u0101, cirkonija inkrust\u0101cijas darbojas k\u0101 s\u012bkas barjeras, kas absorb\u0113 un izklied\u0113 ener\u0123iju, pirms t\u0101s strukt\u016br\u0101 rodas plaisas.<\/p>\n
ZTA keramikas caurul\u0113m ir pla\u0161s pielietojums ma\u0161\u012bnb\u016bv\u0113, ugunsiztur\u012bgaj\u0101, \u0137\u012bmiskaj\u0101 un metalur\u0123ijas r\u016bpniec\u012bb\u0101. Augsta iztur\u012bba pret augst\u0101m temperat\u016br\u0101m, sk\u0101b\u0113m un s\u0101rmiem apvienojum\u0101 ar izcilu ciet\u012bbu un stingr\u012bbu padara to par ide\u0101lu veidu \u0137\u012bmisko \u0161\u0137idrumu transport\u0113\u0161anai vai k\u0101 izol\u0113jo\u0161us aizsargmugurus to transport\u0113\u0161anai. Turkl\u0101t t\u0101s ir biolo\u0123iski sader\u012bgas, netoksiskas un nesatur pies\u0101r\u0146ojumu - ide\u0101li piem\u0113rotas izmanto\u0161anai medic\u012bn\u0101 un ugunsiztur\u012bgaj\u0101 r\u016bpniec\u012bb\u0101!<\/p>\n
Cirkonija keramikas materi\u0101ls ir viens no iztur\u012bg\u0101kajiem keramikas materi\u0101liem tirg\u016b, kas nodro\u0161ina izcilu nodilumiztur\u012bbu un nodilumiztur\u012bbu\/iztur\u012bbu un darbojas pat t\u0101d\u0101s darba vid\u0113s, kur\u0101s plastmasa, met\u0101li un cita keramika to nesp\u0113j. Cirkonija keramiku var izmantot, tostarp konstrukcijas elementos, ielikt\u0146os, virzu\u013cu uzmavas, virzu\u013cu uzmavas vadot\u0146u izolatoros.<\/p>\n
SEM att\u0113los ar alum\u012bnija oks\u012bda, MSZ un YSZ l\u016bzuma virsm\u0101m redzamas trimod\u0101las mikrostrukt\u016bras, kas b\u016btiski ietekm\u0113 l\u016bzuma veidu. YSZ gad\u012bjum\u0101 \u0161\u012bs mikrostrukt\u016bras nor\u0101da uz starpkrist\u0101lisku boj\u0101juma re\u017e\u012bmu, savuk\u0101rt MSZ un WO3 gad\u012bjum\u0101 t\u0101s atkl\u0101j transkrist\u0101lisku boj\u0101juma re\u017e\u012bmu; abu materi\u0101lu testu rezult\u0101ti bija tuvi eksperiment\u0101laj\u0101m l\u016bzuma v\u0113rt\u012bb\u0101m visiem trim test\u0113tajiem materi\u0101liem.<\/p>\n
Porainiem mull\u012bta paraugiem, kas modific\u0113ti ar magn\u0113zija stabiliz\u0113tu cirkoniju (2,8mol% MgO) un WO3, ir visliel\u0101k\u0101 \u0161\u0137ietam\u0101 porain\u012bba starp sa\u0137epin\u0101tajiem paraugiem ar vid\u0113jo porain\u012bbu 73,2 + 2,2%. WO3 daudzuma dubulto\u0161ana samazina porain\u012bbu l\u012bdz 66 + 2%.<\/p>\n
MSZ un WO3 keramikas paraugiem piem\u012bt augsta \u012bpatn\u0113j\u0101 siltuma ietilp\u012bba apvienojum\u0101 ar zemu siltuma dif\u016bzijas koeficientu, kas iev\u0113rojami palielina termisko triecieniztur\u012bbu, sal\u012bdzinot ar itrija stabiliz\u0113to cirkoniju (8mol% Y2O3) un WO3. Alum\u012bnija oks\u012bda, MSZ un YSZ TRS testos ar lodi uz gredzena tika konstat\u0113tas rakstur\u012bg\u0101s stipr\u012bbas, kas atbilst in\u017eenierkeramikas pie\u0146emamaj\u0101m v\u0113rt\u012bb\u0101m, savuk\u0101rt to Veibula modu\u013ci atbilst uzlabotas in\u017eenierkeramikas pie\u0146emamajiem diapazoniem.<\/p>\n
Itrija da\u013c\u0113ji stabiliz\u0113ts cirkonija oks\u012bds (Y-PSZ) jau sen ir k\u013cuvis par keramikas materi\u0101lu termiskajiem barjeras p\u0101rkl\u0101jumiem (TBC). Tas nodro\u0161ina augstu temperat\u016bras stabilit\u0101ti, lielisku stingr\u012bbu un zemu siltumvad\u012btsp\u0113ju, k\u0101 ar\u012b noveco\u0161anu augst\u0101s temperat\u016br\u0101s sk\u0101bek\u013ca transporta jonu transporta tr\u016bkuma d\u0113\u013c; tom\u0113r t\u0101 ilgm\u016b\u017e\u012bbu apdraud noveco\u0161an\u0101s un sabiez\u0113\u0161ana augst\u0101s temperat\u016br\u0101s; t\u0101 ierobe\u017eotais sk\u0101bek\u013ca transports v\u0113l vair\u0101k pasliktina ilgm\u016b\u017e\u012bbu. Lai nov\u0113rstu \u0161os tr\u016bkumus, ar ceriju stabiliz\u0113t\u0101 cirkonija keramika (CSZ) nodro\u0161ina lab\u0101ku iztur\u012bbu pret termiskiem triecieniem, izmantojot ar ceriju stabiliz\u0113tu cirkoniju k\u0101 oksid\u0101cijas veicin\u0101t\u0101ju un divsl\u0101\u0146u konstrukciju, kas nodro\u0161ina liel\u0101ku iztur\u012bbu pret termiskiem triecieniem.<\/p>\n
Sal\u012bdzinot ar 8 svara % itrija %, CSZ nodro\u0161ina lab\u0101kas iztur\u012bbas un stingr\u012bbas \u012bpa\u0161\u012bbas. Turkl\u0101t taj\u0101 nenotiek f\u0101\u017eu p\u0101reja augst\u0101s temperat\u016br\u0101s, un tas ir iztur\u012bg\u0101ks pret sa\u0137epin\u0101\u0161anu. Turkl\u0101t t\u0101 siltuma caurlaid\u012bbas koeficienti un sk\u0101bek\u013ca jonu dif\u016bzija \u013cauj lab\u0101k nov\u0113rst saistvielu p\u0101rkl\u0101juma un substr\u0101ta oksid\u0101ciju.<\/p>\n
Progres\u012bvie materi\u0101li, tostarp gadol\u012bnija cirkon\u0101ts (GZO), lant\u0101na heksalumin\u0101ts (LaAlO3), kalcija cirkon\u0101ts (CaZrO3) un keramz\u012bta stabiliz\u0113ts cirkonijs (CSZ), tiek izmantoti modern\u0101kajos termo-meh\u0101niskajos gult\u0146u p\u0101rsegos (TBC), lai pasarg\u0101tu met\u0101lus un keramiku no karstuma izrais\u012btas degrad\u0101cijas, nodro\u0161inot liel\u0101ku aizsardz\u012bbu pret nodilumu, k\u0101 ar\u012b iztur\u012bbu pret koroziju augst\u0101 temperat\u016br\u0101 g\u0101zes turb\u012bnu lietojumos.<\/p>\n
P\u0113tnieki veica biezu CYSZ daudzsl\u0101\u0146u sist\u0113mu karst\u0101s korozijas test\u0113\u0161anu, lai lab\u0101k izprastu to uzved\u012bbu karst\u0101 temperat\u016br\u0101. Veicot pla\u0161as anal\u012bzes katrai zonai, agres\u012bvo S un Na saturo\u0161o s\u0101\u013cu rad\u012btie boj\u0101jumi netika konstat\u0113ti. Turkl\u0101t TGO zonu morfolo\u0123ija atbilda p\u0101rkl\u0101jumu morfolo\u0123ijai ar\u012b p\u0113c karst\u0101s korozijas testu pabeig\u0161anas.<\/p>","protected":false},"excerpt":{"rendered":"
Nep\u0101rsp\u0113jama iztur\u012bba ar cirkonija keramiku Cirkonija keramika pied\u0101v\u0101 progres\u012bvus materi\u0101lu risin\u0101jumus pla\u0161am r\u016bpniecisko lietojumu kl\u0101stam. T\u0101 sast\u0101vu daudzveid\u012bba, s\u0101kot no ZTA kompoz\u012btu br\u012bnumainaj\u0101m \u012bpa\u0161\u012bb\u0101m l\u012bdz Ce-TZP iztur\u012bbas \u012bpa\u0161\u012bb\u0101m, nodro\u0161ina augstas veiktsp\u0113jas risin\u0101jumus, kas atbilst da\u017e\u0101d\u0101m r\u016bpniec\u012bbas vajadz\u012bb\u0101m. Piedevas veid\u0101 ra\u017eotas cirkonija keramikas meh\u0101nisk\u0101s \u012bpa\u0161\u012bbas var ietekm\u0113t daudzi faktori, tostarp t\u0101s izejvielu ... Las\u012bt t\u0101l\u0101k<\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[2],"tags":[],"class_list":["post-8","post","type-post","status-publish","format-standard","hentry","category-product-related"],"_links":{"self":[{"href":"https:\/\/zirconiaceramic.net\/lv\/wp-json\/wp\/v2\/posts\/8","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zirconiaceramic.net\/lv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zirconiaceramic.net\/lv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zirconiaceramic.net\/lv\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zirconiaceramic.net\/lv\/wp-json\/wp\/v2\/comments?post=8"}],"version-history":[{"count":1,"href":"https:\/\/zirconiaceramic.net\/lv\/wp-json\/wp\/v2\/posts\/8\/revisions"}],"predecessor-version":[{"id":11,"href":"https:\/\/zirconiaceramic.net\/lv\/wp-json\/wp\/v2\/posts\/8\/revisions\/11"}],"wp:attachment":[{"href":"https:\/\/zirconiaceramic.net\/lv\/wp-json\/wp\/v2\/media?parent=8"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zirconiaceramic.net\/lv\/wp-json\/wp\/v2\/categories?post=8"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zirconiaceramic.net\/lv\/wp-json\/wp\/v2\/tags?post=8"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}