{"id":92,"date":"2024-06-04T11:30:57","date_gmt":"2024-06-04T03:30:57","guid":{"rendered":"https:\/\/aluminaceramics.net\/?p=92"},"modified":"2024-07-15T20:17:54","modified_gmt":"2024-07-15T12:17:54","slug":"co-je-hustota-oxidu-hliniteho","status":"publish","type":"post","link":"https:\/\/aluminaceramics.net\/sk\/what-is-alumina-density\/","title":{"rendered":"\u010co je hustota oxidu hlinit\u00e9ho?"},"content":{"rendered":"<p>Oxid hlinit\u00fd (oxid hlinit\u00fd, Al2O3) je jednou z najpou\u017e\u00edvanej\u0161\u00edch technick\u00fdch keram\u00edk. M\u00e1 mnoho v\u00fdhodn\u00fdch a jedine\u010dn\u00fdch vlastnost\u00ed, v\u010faka ktor\u00fdm je vhodn\u00fd na cel\u00fd rad priemyseln\u00fdch aplik\u00e1ci\u00ed.<\/p>\n<p>Zliatina hlin\u00edka je zn\u00e1ma vysokou odolnos\u0165ou proti kor\u00f3zii a teplot\u00e1m. Okrem toho jej vynikaj\u00faca odolnos\u0165 vo\u010di oderu pom\u00e1ha pred\u013a\u017ei\u0165 \u017eivotnos\u0165 komponentov a dielov vyroben\u00fdch z tohto materi\u00e1lu.<\/p>\n<h2>Hmotnos\u0165<\/h2>\n<p>Hlin\u00edk je m\u00e4kk\u00fd, ale mo\u017eno ho posilni\u0165 legovan\u00edm s mal\u00fdm mno\u017estvom medi, hor\u010d\u00edka, krem\u00edka alebo mang\u00e1nu, \u010d\u00edm sa vytvoria pevnej\u0161ie zliatiny, v\u010faka ktor\u00fdm je tento kov e\u0161te univerz\u00e1lnej\u0161\u00ed z h\u013eadiska elektrickej a tepelnej vodivosti, pevnosti, \u0165a\u017enosti a odolnosti proti kor\u00f3zii. Navy\u0161e je \u013eahk\u00fd - \u010do je v\u00fdhoda pre mnoh\u00e9 aplik\u00e1cie! Univerz\u00e1lnos\u0165 hlin\u00edka tie\u017e umo\u017e\u0148uje jeho jednoduch\u00e9 tvarovanie do r\u00f4znych v\u00fdrobkov, ktor\u00e9 m\u00f4\u017eu vyhovova\u0165 ak\u00e9muko\u013evek predstavite\u013en\u00e9mu \u00fa\u010delu.<\/p>\n<p>Hlin\u00edk sa nach\u00e1dza ako \u010dist\u00fd kov aj ako oxid v zemskej k\u00f4re v lo\u017eisk\u00e1ch bauxitovej rudy, kde vytv\u00e1ra netoxick\u00e9 lo\u017eisk\u00e1 s m\u00e4kk\u00fdmi vlastnos\u0165ami a at\u00f3mov\u00fdm \u010d\u00edslom 13. V\u010faka svojej striebornobielej farbe a kovov\u00e9mu lesku sa hlin\u00edk d\u00e1 \u013eahko oh\u00fdba\u0165, stl\u00e1\u010da\u0165 alebo lisova\u0165 do tenk\u00fdch plechov na v\u00fdrobu a dokonca sa d\u00e1 pokry\u0165 ochrannou bari\u00e9rou z oxidu, aby odolal kor\u00f3zii vytvoren\u00edm vlastnej samoochrannej oxidovej vrstvy.<\/p>\n<p>Oxid hlinit\u00fd je zn\u00e1my predov\u0161etk\u00fdm ako abraz\u00edvny alebo \u017eiaruvzdorn\u00fd materi\u00e1l. Okrem toho ho mo\u017eno n\u00e1js\u0165 v keramike, elektrick\u00fdch izol\u00e1toroch, katalyz\u00e1toroch a katalytick\u00fdch aplik\u00e1ci\u00e1ch. Existuj\u00fa r\u00f4zne druhy, ktor\u00e9 sa daj\u00fa vyrobi\u0165 do pr\u00e1\u0161kov alebo gran\u00fal s r\u00f4znou ve\u013ekos\u0165ou z\u0155n na v\u00fdrobn\u00e9 \u00fa\u010dely.<\/p>\n<p>Chemick\u00e1 stabilita tohto materi\u00e1lu je vysok\u00e1, tak\u017ee je vhodn\u00fd na vystavenie soliam, kyselin\u00e1m a v\u00fdparom bez toho, aby do\u0161lo k po\u0161kodeniu povrchu alebo kon\u0161trukcie v d\u00f4sledku oderu, kor\u00f3zie, mrazu alebo opotrebovania. Okrem toho jeho odolnos\u0165 umo\u017e\u0148uje odol\u00e1va\u0165 vysok\u00fdm teplot\u00e1m bez toho, aby podliehal l\u00e1mavosti alebo degrad\u00e1cii.<\/p>\n<p>Hlin\u00edk patr\u00ed do skupiny alkalick\u00fdch zem\u00edn v periodickej tabu\u013eke a m\u00e1 at\u00f3mov\u00fa hmotnos\u0165 2698 g\/mol a tri valen\u010dn\u00e9 elektr\u00f3ny. Reakcie medzi kysl\u00edkom a hlin\u00edkom prebiehaj\u00fa pomaly, zatia\u013e \u010do reakcie medzi hlin\u00edkom a hor\u00facimi kyselinami a z\u00e1sadami prebiehaj\u00fa r\u00fdchlo.<\/p>\n<p>Hlin\u00edk (Al2O3) sa hojne vyskytuje v zemskej k\u00f4re a pou\u017e\u00edva sa na r\u00f4zne \u00fa\u010dely. Vyzna\u010duje sa vysokou teplotou topenia a vynikaj\u00facimi mechanick\u00fdmi a fyzik\u00e1lnymi vlastnos\u0165ami, ako s\u00fa tvrdos\u0165, pevnos\u0165 a n\u00edzky koeficient roz\u0165a\u017enosti - vlastnosti, ktor\u00e9 ho robia vhodn\u00fdm ako \u017eiaruvzdorn\u00fd materi\u00e1l, elektrick\u00fd izolant a chemick\u00fd nosi\u010d - v\u010faka \u010domu je vhodn\u00fd na v\u00fdrobu teh\u00e1l, t\u00e9glikov, laborat\u00f3rnych v\u00fdrobkov, papierov\u00fdch zapa\u013eovac\u00edch svie\u010dok, n\u00e1terov na sklo pre ultrafiltra\u010dn\u00fa chromatografick\u00fa anal\u00fdzu, ako aj na v\u00fdrobu kovov\u00e9ho hlin\u00edka a jeho zl\u00fa\u010den\u00edn.<\/p>\n<h2>Zv\u00e4zok<\/h2>\n<p>Hlin\u00edk je technick\u00e1 keramika, ktor\u00e1 sa v\u010faka svojim vynikaj\u00facim vlastnostiam pou\u017e\u00edva v \u0161irokej \u0161k\u00e1le aplik\u00e1ci\u00ed. Hlin\u00edk sa vyzna\u010duje vysokou mechanickou pevnos\u0165ou, pevnos\u0165ou v tlaku, tvrdos\u0165ou a odolnos\u0165ou proti kor\u00f3zii a opotrebovaniu, ako aj n\u00edzkou tepelnou roz\u0165a\u017enos\u0165ou a chemickou inertnos\u0165ou. Okrem toho oxid hlinit\u00fd p\u00f4sob\u00ed kyslo aj z\u00e1sadito, ke\u010f sa zmie\u0161a so zahriatou zriedenou kyselinou chlorovod\u00edkovou, zatia\u013e \u010do v kombin\u00e1cii s kyselinou s\u00edrovou p\u00f4sob\u00ed z\u00e1sadito.<\/p>\n<p>Objem oxidu hlinit\u00e9ho mo\u017eno vyjadri\u0165 ako podiel jeho hmotnosti a hustoty v centimetroch kubick\u00fdch (g\/cm3), \u010do z neho rob\u00ed z\u00e1kladn\u00fa charakteristiku, ktor\u00fa je potrebn\u00e9 zoh\u013eadni\u0165, preto\u017ee meria, ko\u013eko dut\u00edn sa nach\u00e1dza v jeho materi\u00e1li - \u010d\u00edm ni\u017e\u0161\u00ed je obsah dut\u00edn, t\u00fdm v\u00e4\u010d\u0161\u00ed je jeho objem. Vplyv m\u00e1 aj teplota, preto\u017ee vy\u0161\u0161ie teploty ved\u00fa k zv\u00fd\u0161eniu hustoty.<\/p>\n<p>Bauxit je prirodzene sa vyskytuj\u00faci heterog\u00e9nny materi\u00e1l zlo\u017een\u00fd z jedn\u00e9ho alebo viacer\u00fdch miner\u00e1lov hydroxidu hlinit\u00e9ho obsahuj\u00facich \u010fal\u0161ie prvky a zl\u00fa\u010deniny, ako je oxid kremi\u010dit\u00fd, oxid \u017eelezit\u00fd, tit\u00e1n a hlinitokremi\u010ditan v r\u00f4znych koncentr\u00e1ci\u00e1ch. Pribli\u017ene 85% svetovej produkcie vyu\u017e\u00edva na premenu bauxitu na oxid hlinit\u00fd met\u00f3du mokr\u00e9ho chemick\u00e9ho l\u00fahovania zn\u00e1mu ako Bayerov proces.<\/p>\n<p>G-hlin\u00edk je extr\u00e9mne mezop\u00f3rovit\u00e1 forma oxidu hlinit\u00e9ho s ve\u013ek\u00fdmi p\u00f3rmi, ktor\u00e1 m\u00e1 vysok\u00fa p\u00f3rovitos\u0165 a plochu povrchu, \u010do z neho rob\u00ed vynikaj\u00faci podporn\u00fd materi\u00e1l pre katalyz\u00e1tory na b\u00e1ze Fe na reakciu hydroxyl\u00e1cie fenolu s peroxidom vod\u00edka, pri ktorej vznikaj\u00fa cenn\u00e9 organick\u00e9 zl\u00fa\u010deniny, ako je hydrochin\u00f3n a katechol. G-hlin\u00edk sa m\u00f4\u017ee pochv\u00e1li\u0165 vynikaj\u00facou konverziou 53,4% na tento proces, pri\u010dom m\u00e1 selektivitu vo\u010di d-hydroxybenz\u00e9nom 96,2 %, \u010do \u010falej zd\u00f4raz\u0148uje jeho hodnotu ako priemyseln\u00e9ho katalyz\u00e1tora.<\/p>\n<p>Gama-f\u00e1zov\u00fd oxid hlinit\u00fd sa m\u00f4\u017ee formova\u0165 do mikropor\u00e9znych vo\u0161tinov\u00fdch \u0161trukt\u00far s vysokou katalytickou aktivitou, \u010do z neho rob\u00ed atrakt\u00edvny materi\u00e1l na podporu mnoh\u00fdch priemyseln\u00fdch katalyz\u00e1torov v aplik\u00e1ci\u00e1ch rafin\u00e1cie ropy. Okrem toho v\u00fdskum jeho potenci\u00e1lu ako substr\u00e1tu na pr\u00edpravu nanofiltra\u010dn\u00fdch membr\u00e1n priniesol s\u013eubn\u00e9 prv\u00e9 v\u00fdsledky; okrem toho sa tento typ oxidu hlinit\u00e9ho pou\u017e\u00edva na vytv\u00e1ranie syntetick\u00fdch zaf\u00edrov potrebn\u00fdch v niektor\u00fdch polovodi\u010dov\u00fdch zariadeniach.<\/p>\n<h2>Hustota<\/h2>\n<p>Oxid hlinit\u00fd je polykry\u0161talick\u00e1 keramika s n\u00edzkou \u0161pecifickou hmotnos\u0165ou a vysokou tvrdos\u0165ou, ktor\u00e1 pon\u00faka n\u00edzku \u0161pecifick\u00fa hmotnos\u0165 a vynikaj\u00face vlastnosti tvrdosti. Hlin\u00edk je dostupn\u00fd v r\u00f4znych \u010distot\u00e1ch, mo\u017eno ho vstrekova\u0165, lisova\u0165, izostaticky lisova\u0165, odlieva\u0165 alebo vytl\u00e1\u010da\u0165, aby sa vytvorili po\u017eadovan\u00e9 tvary pred vyp\u00e1len\u00edm a spekan\u00edm - podobne ako kovy a zliatiny sa daj\u00fa \u013eah\u0161ie opracova\u0165 pomocou \u0161tandardn\u00fdch techn\u00edk; jeho stredn\u00e1 pevnos\u0165 v \u0165ahu, ale krehk\u00e1 povaha sp\u00f4sobuje, \u017ee v\u00fdroba je ove\u013ea menej efekt\u00edvna; vlastnosti tepelnej vodivosti robia hlin\u00edk ide\u00e1lnym, preto\u017ee odol\u00e1va \u00fatokom z\u00e1sad, ako aj siln\u00fdm kyselin\u00e1m, ke\u010f sa pri v\u00fdrobn\u00fdch procesoch pou\u017e\u00edvaj\u00fa materi\u00e1ly z hlin\u00edka.<\/p>\n<p>Hlin\u00edk sa pou\u017e\u00edva ako d\u00f4le\u017eit\u00e1 surovina pri v\u00fdrobe kovov\u00e9ho hlin\u00edka, ako aj v mnoh\u00fdch priemyseln\u00fdch aplik\u00e1ci\u00e1ch vr\u00e1tane elektrick\u00fdch, chemick\u00fdch, leteck\u00fdch a oteruvzdorn\u00fdch s\u00fa\u010diastok. Hlin\u00edk sa nach\u00e1dza aj v zdravotn\u00edckych pom\u00f4ckach, ako s\u00fa implant\u00e1ty na v\u00fdmenu bedrov\u00e9ho k\u013abu a zubn\u00e9 korunky; v\u010faka svojej odolnosti vo\u010di abr\u00e1zii je vhodn\u00fd aj na r\u00f4zne abraz\u00edvne pou\u017eitia, ako s\u00fa textiln\u00e9 vodidl\u00e1, piesty \u010derpadiel, oblo\u017eenia \u017e\u013eabov a v\u00fdtokov\u00e9 otvory.<\/p>\n<p>Korund je jednou z viacer\u00fdch foriem oxidu hlinit\u00e9ho, pri\u010dom i\u00f3ny kysl\u00edka s\u00fa zabalen\u00e9 do hexagon\u00e1lneho tesn\u00e9ho usporiadania a i\u00f3ny hlin\u00edka s\u00fa rozmiestnen\u00e9 v dvoch tretin\u00e1ch oktaedrick\u00fdch medzier v hexagon\u00e1lnych tesn\u00fdch \u0161trukt\u00farach, ako aj i\u00f3ny hlin\u00edka, ktor\u00e9 sa nach\u00e1dzaj\u00fa medzi \u0161iestimi i\u00f3nmi kysl\u00edka v ka\u017edom oktaedri a ich \u0161iestimi kysl\u00edkov\u00fdmi n\u00e1protivkami vytv\u00e1raj\u00facimi nepravideln\u00fa kry\u0161t\u00e1lov\u00fa \u0161trukt\u00faru s jednou stranou spolo\u010dnou pre tri strany oktaedrov vrchnej vrstvy.<\/p>\n<p>Hlin\u00edk m\u00f4\u017ee plni\u0165 nieko\u013eko funkci\u00ed. Okrem toho, \u017ee sa pou\u017e\u00edva ako abraz\u00edvum, p\u00f4sob\u00ed aj ako elektrick\u00fd izolant a je \u0161iroko vyu\u017e\u00edvan\u00fd v litografii krem\u00edka na zaf\u00edre pre integrovan\u00e9 obvody, sl\u00fa\u017ei ako tunelov\u00e1 bari\u00e9ra v supravodiv\u00fdch zariadeniach, ako s\u00fa jednoelektr\u00f3nov\u00e9 tranzistory a supravodiv\u00e9 kvantov\u00e9 interferen\u010dn\u00e9 zariadenia, a p\u00f4sob\u00ed ako medziprodukt pri v\u00fdrobe v\u00fdrobn\u00e9ho substr\u00e1tu z karbidu volfr\u00e1mu odoln\u00e9ho vo\u010di opotrebovaniu. Bohu\u017eia\u013e, vzh\u013eadom na ni\u017e\u0161iu r\u00e1zov\u00fa h\u00fa\u017eevnatos\u0165 sa oxid hlinit\u00fd e\u0161te len mus\u00ed sta\u0165 h\u00fa\u017eevnat\u00fdm materi\u00e1lom odoln\u00fdm vo\u010di opotrebovaniu, ktor\u00fd sa kv\u00f4li tomuto faktoru pou\u017e\u00edva v bansk\u00fdch aplik\u00e1ci\u00e1ch.<\/p>\n<p>Vdychovanie prachu oxidu hlinit\u00e9ho predstavuje potenci\u00e1lne riziko pri pr\u00e1ci, pri\u010dom \u0161t\u00fadie s pou\u017eit\u00edm r\u00e1dioakt\u00edvne ozna\u010den\u00e9ho 26Al nazna\u010duj\u00fa, \u017ee m\u00f4\u017ee prenikn\u00fa\u0165 hlboko do p\u013e\u00fac a zosta\u0165 tam dlh\u0161\u00ed \u010das, \u010do m\u00f4\u017ee naru\u0161i\u0165 norm\u00e1lne fungovanie p\u013e\u00fac, ako aj by\u0165 karcinog\u00e9nne.<\/p>\n<h2>P\u00f3rovitos\u0165<\/h2>\n<p>P\u00f3rovitos\u0165 materi\u00e1lov sa vz\u0165ahuje na mno\u017estvo vzduchu v pevn\u00fdch materi\u00e1loch, zvy\u010dajne vyjadren\u00e9 v percent\u00e1ch. P\u00f3rovitos\u0165 m\u00f4\u017ee pom\u00f4c\u0165 ur\u010di\u0165 ich hustotu; viac dut\u00edn znamen\u00e1 menej hust\u00e9 materi\u00e1ly.<\/p>\n<p>Na presn\u00e9 pos\u00fadenie p\u00f3rovitosti je vhodn\u00fd skenovac\u00ed elektr\u00f3nov\u00fd mikroskop (SEM). SEM jasne a presne zobrazuje priestory p\u00f3rov a z\u00e1rove\u0148 meria ich priepustnos\u0165 - alebo schopnos\u0165 vody prech\u00e1dza\u0165 cez materi\u00e1ly - pomocou met\u00f3d, ako je ponorenie vzoriek do kvapaliny, napr\u00edklad h\u00e9lia alebo vody, alebo pomocou imbimenta\u010dn\u00fdch met\u00f3d; viac prepojen\u00fdch p\u00f3rov zvy\u0161uje priepustnos\u0165.<\/p>\n<p>Oxid hlinit\u00fd je extr\u00e9mne tvrd\u00fd materi\u00e1l, \u010do znamen\u00e1, \u017ee \u00fa\u010dinne odol\u00e1va mechanick\u00e9mu opotrebovaniu a oderu - je to jeden z d\u00f4vodov, pre\u010do sa stal jednou z najob\u013e\u00fabenej\u0161\u00edch technick\u00fdch keram\u00edk pou\u017e\u00edvan\u00fdch na vstrekovanie plastov.<\/p>\n<p>Oxid hlinit\u00fd m\u00e1 v\u0161ak niektor\u00e9 nev\u00fdhody. Najm\u00e4 jeho elektrick\u00e9 vlastnosti neobstoja dobre pri vy\u0161\u0161\u00edch teplot\u00e1ch, m\u00e1 n\u00edzku vodivos\u0165, preto\u017ee nie je ve\u013emi kry\u0161talick\u00fd a m\u00e1 ve\u013ea defektov v at\u00f3moch, ktor\u00e9 tvoria jeho zlo\u017eenie.<\/p>\n<p>\u00da\u010dinn\u00fdm sp\u00f4sobom zv\u00fd\u0161enia elektrick\u00fdch vlastnost\u00ed oxidu hlinit\u00e9ho je jeho kry\u0161taliz\u00e1cia pridan\u00edm pr\u00edmes\u00ed alebo zahrievan\u00edm pri vy\u0161\u0161\u00edch teplot\u00e1ch. Tak\u00e9to zmeny v\u0161ak m\u00f4\u017eu ma\u0165 v\u00fdznamn\u00e9 d\u00f4sledky na pevnos\u0165 a tvrdos\u0165 materi\u00e1lu oxidu hlinit\u00e9ho pou\u017e\u00edvan\u00e9ho v ur\u010dit\u00fdch aplik\u00e1ci\u00e1ch a pri nespr\u00e1vnej aplik\u00e1cii m\u00f4\u017eu sp\u00f4sobi\u0165 probl\u00e9my.<\/p>\n<p>Zlep\u0161enie elektrick\u00fdch vlastnost\u00ed oxidu hlinit\u00e9ho vytvoren\u00edm v\u00e4\u010d\u0161ieho priestoru pre p\u00f3ry m\u00f4\u017ee tie\u017e zlep\u0161i\u0165 jeho vlastnosti zv\u00fd\u0161en\u00edm koncentr\u00e1cie oxidu hlinit\u00e9ho v jeho zlo\u017een\u00ed. V\u00fdhodou s\u00fa aj m\u00e4k\u0161ie a tv\u00e1rnej\u0161ie materi\u00e1ly s v\u00e4\u010d\u0161\u00edm mno\u017estvom p\u00f3rov.<\/p>\n<p>Mezop\u00f3rovit\u00fd oxid hlinit\u00fd je \u010fal\u0161\u00ed typ oxidu hlinit\u00e9ho s ve\u013emi rovnomern\u00fdmi kan\u00e1lmi a ve\u013ek\u00fdmi povrchov\u00fdmi plochami, ktor\u00e9 vytv\u00e1raj\u00fa mezop\u00f3ry so zv\u00fd\u0161en\u00fdm elektrick\u00fdm odporom pri izbov\u00fdch teplot\u00e1ch (dva r\u00e1dy pri n\u00edzkych teplot\u00e1ch; \u0161tyri r\u00e1dy pri vysok\u00fdch teplot\u00e1ch), \u010do sa m\u00f4\u017ee uk\u00e1za\u0165 ako nev\u00fdhodn\u00e9 pri pou\u017eit\u00ed na v\u00fdrobu bat\u00e9ri\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"<p>Alumina (aluminum oxide, Al2O3) is one of the most widely utilized technical ceramics. With many beneficial and unique properties that [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[6],"tags":[],"class_list":["post-92","post","type-post","status-publish","format-standard","hentry","category-alumina-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/posts\/92","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/comments?post=92"}],"version-history":[{"count":1,"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/posts\/92\/revisions"}],"predecessor-version":[{"id":93,"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/posts\/92\/revisions\/93"}],"wp:attachment":[{"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/media?parent=92"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/categories?post=92"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/tags?post=92"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}