Oxid hlinit\u00fd (Al2O3) je jedn\u00edm z nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00edch oxidov\u00fdch keramick\u00fdch materi\u00e1l\u016f, kter\u00fd se vyzna\u010duje vynikaj\u00edc\u00edmi vlastnostmi, jako je mechanick\u00e1 pevnost, tvrdost, \u017e\u00e1ruvzdornost, dielektrick\u00e9 vlastnosti p\u0159i pokojov\u00fdch i zv\u00fd\u0161en\u00fdch teplot\u00e1ch a tepeln\u00e1 vodivost.<\/p>\n
Tepeln\u011b izotropn\u00ed keramika je vynikaj\u00edc\u00ed volbou materi\u00e1lu pro izola\u010dn\u00ed aplikace. To znamen\u00e1, \u017ee jej\u00ed vodivost z\u016fst\u00e1v\u00e1 relativn\u011b st\u00e1l\u00e1 v r\u016fzn\u00fdch orientac\u00edch krystal\u016f, tak\u017ee je vhodn\u00e1 pro aplikace, kter\u00e9 vy\u017eaduj\u00ed tepelnou regulaci nebo ochranu p\u0159ed p\u0159\u00edm\u00fdmi zdroji tepla.<\/p>\n
Hlin\u00edk je v\u00fdjime\u010dn\u00fd vysokoteplotn\u00ed materi\u00e1l s vynikaj\u00edc\u00edmi elektrick\u00fdmi a tepeln\u00fdmi vlastnostmi, d\u00edky nim\u017e je nezbytn\u00fd v mnoha vysokoteplotn\u00edch aplikac\u00edch, jako jsou pece, su\u0161\u00e1rny a dal\u0161\u00ed za\u0159\u00edzen\u00ed. Krom\u011b toho oxid hlinit\u00fd dob\u0159e odol\u00e1v\u00e1 korozi a chemick\u00fdm \u00fatok\u016fm, tak\u017ee je vhodn\u00fd pro korozivn\u00ed a hork\u00e9 prost\u0159ed\u00ed.<\/p>\n
Chemick\u00e1 struktura oxidu hlinit\u00e9ho umo\u017e\u0148uje, aby z\u016fstal pru\u017en\u00fd i p\u0159i vysok\u00fdch teplot\u00e1ch, a je tak vhodn\u00fd pro n\u00e1ro\u010dn\u00e9 pr\u016fmyslov\u00e9 procesy, jako je v\u00fdroba, v\u00fdroba energie a v\u00fdzkum. Hlin\u00edk je vynikaj\u00edc\u00ed n\u00e1hradou oceli, chromu a dal\u0161\u00edch kov\u016f a m\u016f\u017ee se pochlubit extr\u00e9mn\u00ed tvrdost\u00ed, odolnost\u00ed proti ot\u011bru a tepelnou vodivost\u00ed, kter\u00e9 z n\u011bj \u010din\u00ed vynikaj\u00edc\u00ed materi\u00e1l.<\/p>\n
Bauxit se vyskytuje v n\u011bkolika form\u00e1ch, od nativn\u00edho bauxitu a lateritov\u00fdch lo\u017eisek a\u017e po jeho silik\u00e1tov\u00e9 formy v j\u00edlov\u00fdch miner\u00e1lech, jako je gibbsit a diaspor, nebo se vyskytuje jako lo\u017eisko v \u017eivc\u00edch a kyanitu.<\/p>\n
Hlin\u00edk lze snadno tvarovat do r\u016fzn\u00fdch tvar\u016f a velikost\u00ed pro v\u00fdrobu a z\u00e1rove\u0148 je vynikaj\u00edc\u00edm izolantem, co\u017e z n\u011bj \u010din\u00ed ide\u00e1ln\u00ed materi\u00e1l pro pou\u017eit\u00ed p\u0159i vysok\u00fdch teplot\u00e1ch. Hlin\u00edkov\u00e9 ty\u010de lze vyr\u00e1b\u011bt pro \u0159ez\u00e1n\u00ed a brou\u0161en\u00ed, zat\u00edmco kuli\u010dky lze vyu\u017e\u00edt jako povlaky nebo laboratorn\u00ed n\u00e1dob\u00ed.<\/p>\n
A\u010dkoli m\u00e1 oxid hlinit\u00fd n\u00edzkou elektrickou vodivost, jeho bod t\u00e1n\u00ed p\u0159ibli\u017en\u011b 2 050 stup\u0148\u016f Celsia (3 700 stup\u0148\u016f F) jej \u010din\u00ed vhodn\u00fdm pro prost\u0159ed\u00ed s vysokou teplotou. Vynikaj\u00edc\u00ed pevnost, odolnost proti ot\u011bru a elektroizola\u010dn\u00ed vlastnosti oxidu hlinit\u00e9ho z n\u011bj rovn\u011b\u017e \u010din\u00ed cenn\u00fd materi\u00e1l v keramick\u00fdch v\u00fdrobc\u00edch, kter\u00e9 se z n\u011bj vyr\u00e1b\u011bj\u00ed.<\/p>\n
Toto chov\u00e1n\u00ed lze vysv\u011btlit tvorbou alfa f\u00e1ze oxidu hlinit\u00e9ho b\u011bhem reakce v pevn\u00e9 f\u00e1zi. Alfa f\u00e1ze oxidu hlinit\u00e9ho pat\u0159\u00ed mezi nejpevn\u011bj\u0161\u00ed a nejtu\u017e\u0161\u00ed oxidov\u00e9 keramiky; m\u00e1 vysokou pevnost a extr\u00e9mn\u00ed tvrdost (9 stup\u0148\u016f Mohsovy stupnice). Krom\u011b toho je d\u00edky sv\u00e9 odolnosti v\u016f\u010di chemick\u00fdm \u00fatok\u016fm velmi \u017e\u00e1douc\u00ed.<\/p>\n
Mechanick\u00e9 vlastnosti oxidu hlinit\u00e9ho do zna\u010dn\u00e9 m\u00edry z\u00e1vis\u00ed na jeho mikrostruktu\u0159e a mno\u017estv\u00ed rutilu, kter\u00fd obsahuje, p\u0159i\u010dem\u017e ty, kter\u00e9 obsahuj\u00ed 10 hmotnostn\u00edch procent, jsou nejpevn\u011bj\u0161\u00ed d\u00edky tvorb\u011b AT \u010d\u00e1stic s v\u011bt\u0161\u00edmi zrny v kompozitech.<\/p>\n
Oxid hlinit\u00fd je mimo\u0159\u00e1dn\u011b univerz\u00e1ln\u00ed keramick\u00fd materi\u00e1l s n\u00edzkou elektrickou vodivost\u00ed, vysokou pevnost\u00ed, extr\u00e9mn\u00ed tvrdost\u00ed a vynikaj\u00edc\u00edmi tepeln\u00fdmi vlastnostmi. D\u00edky sv\u00e9 obrobitelnosti a odolnosti proti korozi je vynikaj\u00edc\u00edm substr\u00e1tov\u00fdm materi\u00e1lem pro v\u00fdrobu polovodi\u010d\u016f, laser\u016f, p\u0159esn\u00e9 optiky a tak\u00e9 pro odvod tepla v l\u00e9ka\u0159sk\u00fdch p\u0159\u00edstroj\u00edch (sondy), p\u0159i\u010dem\u017e st\u00e1le nab\u00edz\u00ed elektrickou bezpe\u010dnost. Hlin\u00edk nach\u00e1z\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v leteck\u00e9m pr\u016fmyslu, jadern\u00e9 energetice, pr\u016fmyslov\u00e9m vyt\u00e1p\u011bn\u00ed a p\u0159i v\u00fdrob\u011b t\u011bsnic\u00edch materi\u00e1l\u016f typu sklo-kov pro ochranu palivov\u00fdch potrub\u00ed p\u0159ed opot\u0159eben\u00edm v uheln\u00fdch elektr\u00e1rn\u00e1ch.<\/p>\n
P\u0159esto\u017ee m\u00e1 oxid hlinit\u00fd mnoho pozitivn\u00edch vlastnost\u00ed, m\u016f\u017ee b\u00fdt d\u00edky sv\u00e9 pevnosti n\u00e1chyln\u00fd k prasknut\u00ed. Zlep\u0161en\u00ed hou\u017eevnatosti keramiky proto obvykle zahrnuje p\u0159id\u00e1n\u00ed tv\u00e1rn\u00e9 f\u00e1ze, kter\u00e1 rozpt\u00fdl\u00ed nap\u011bt\u00ed a rovnom\u011brn\u011bji rozlo\u017e\u00ed energii trhliny - to v\u0161ak obvykle vede ke sn\u00ed\u017een\u00ed pevnosti a tuhosti a tak\u00e9 ke sn\u00ed\u017een\u00ed v\u00fdkonu p\u0159i kryogenn\u00edch teplot\u00e1ch.<\/p>\n
Pro \u0159e\u0161en\u00ed t\u011bchto probl\u00e9m\u016f se vytv\u00e1\u0159ej\u00ed nanokompozity na b\u00e1zi oxidu hlinit\u00e9ho, aby se zlep\u0161ily jeho mechanick\u00e9 vlastnosti a zv\u00fd\u0161ila hou\u017eevnatost. Zpev\u0148uj\u00edc\u00ed materi\u00e1ly, jako je karbid titanu (TiC), zirkon (ZrO2), karbid k\u0159em\u00edku (SiC) a uhl\u00edkov\u00e9 nanotrubi\u010dky (CNT), zvy\u0161uj\u00ed pevnost v tahu a hou\u017eevnatost i tepelnou vodivost oxidu hlinit\u00e9ho.<\/p>\n
Pochopit, \u017ee tepeln\u00e1 vodivost materi\u00e1l\u016f se m\u011bn\u00ed v z\u00e1vislosti na teplot\u011b; vy\u0161\u0161\u00ed teploty maj\u00ed za n\u00e1sledek ni\u017e\u0161\u00ed tepelnou vodivost, a proto je v\u00fdb\u011br vhodn\u00fdch materi\u00e1l\u016f pro konkr\u00e9tn\u00ed aplikace kritick\u00fdm \u00fakolem.<\/p>\n
Hlin\u00edk je vynikaj\u00edc\u00ed elektrick\u00fd izolant a lze jej vyu\u017e\u00edt jako tunelovou bari\u00e9ru v supravodiv\u00fdch za\u0159\u00edzen\u00edch, jako jsou jednoelektronov\u00e9 tranzistory a supravodiv\u00e1 kvantov\u00e1 interferen\u010dn\u00ed za\u0159\u00edzen\u00ed. Krom\u011b toho se povlaky oxidu hlinit\u00e9ho uk\u00e1zaly jako p\u0159\u00ednosn\u00e9 pro zlep\u0161en\u00ed v\u00fdkonu sol\u00e1rn\u00edch \u010dl\u00e1nk\u016f. Krom\u011b toho se z oxidu hlinit\u00e9ho vyr\u00e1b\u011bj\u00ed hlin\u00edkov\u00e9 dla\u017edice, kter\u00e9 se pou\u017e\u00edvaj\u00ed k ochran\u011b palivov\u00fdch potrub\u00ed a kou\u0159ov\u00fdch plyn\u016f v uheln\u00fdch elektr\u00e1rn\u00e1ch p\u0159ed opot\u0159eben\u00edm; jejich trvanlivost mus\u00ed odol\u00e1vat n\u00e1ro\u010dn\u00fdm chemick\u00fdm podm\u00ednk\u00e1m pro dlouhodobou ochranu zraniteln\u00fdch oblast\u00ed.<\/p>\n
Hlin\u00edk je vynikaj\u00edc\u00ed vodi\u010d tepla, kter\u00fd je schopen pracovat p\u0159i vysok\u00fdch teplot\u00e1ch, ani\u017e by se po\u0161kodil, a je proto nepostradateln\u00fd v mnoha pr\u016fmyslov\u00fdch odv\u011btv\u00edch. Hlin\u00edkov\u00e9 dr\u00e1ty vyu\u017e\u00edvaj\u00ed hlin\u00edk k p\u0159enosu elektrick\u00e9 energie. P\u0159i v\u00fdrob\u011b polovodi\u010d\u016f m\u00e1 podobnou vodivost jako m\u011b\u010f, ale v\u00e1\u017e\u00ed podstatn\u011b m\u00e9n\u011b; nav\u00edc z\u016fst\u00e1v\u00e1 vysoce stabiln\u00ed p\u0159i ni\u017e\u0161\u00edch teplot\u00e1ch, tak\u017ee je vhodn\u00fd pro kryogenn\u00ed aplikace.<\/p>\n
Hlin\u00edkov\u00e1 keramika je d\u00edky sv\u00e9 schopnosti odol\u00e1vat vysok\u00e9mu nap\u011bt\u00ed a korozi v drsn\u00e9m prost\u0159ed\u00ed vynikaj\u00edc\u00edm elektroizola\u010dn\u00edm materi\u00e1lem. Jejich vynikaj\u00edc\u00ed tepeln\u00e1 vodivost nav\u00edc pom\u00e1h\u00e1 udr\u017eovat obvody chladn\u00e9 - tato vlastnost je d\u016fle\u017eit\u00e1 zejm\u00e9na v elektronice a v aplikac\u00edch leteck\u00e9 a kosmick\u00e9 techniky s vysokou hustotou v\u00fdkonu, kter\u00e9 vy\u017eaduj\u00ed \u00fa\u010dinn\u00e1 chladic\u00ed \u0159e\u0161en\u00ed.<\/p>\n
A\u010dkoli se oxid hlinit\u00fd m\u016f\u017ee pochlubit vynikaj\u00edc\u00ed vodivost\u00ed, m\u00e1 oproti jin\u00fdm kov\u016fm jednu nev\u00fdhodu: Na hlin\u00edku se vytv\u00e1\u0159\u00ed vrstva oxidu, kter\u00e1 mu br\u00e1n\u00ed ve veden\u00ed elekt\u0159iny. Tato vrstva oxid\u016f slou\u017e\u00ed jako p\u0159irozen\u00e1 ochrana proti korozi, ale z\u00e1rove\u0148 naru\u0161uje vodivost. Na\u0161t\u011bst\u00ed lze tuto vrstvu odstranit bu\u010f ot\u011brem, nebo chemickou \u00fapravou a vznikne alfa-alum\u00edn, kter\u00fd m\u00e1 mnoho \u017e\u00e1douc\u00edch vlastnost\u00ed: tvrdost, tepelnou vodivost a chemick\u00e9 \u00fatoky, jako je kyselina fluorovod\u00edkov\u00e1, jsou jen n\u011bkter\u00e9 z nich.<\/p>\n
Vodivost oxidu hlinit\u00e9ho se m\u011bn\u00ed v z\u00e1vislosti na jeho slo\u017een\u00ed a teplot\u011b; vy\u0161\u0161\u00ed t\u0159\u00eddy maj\u00ed obvykle lep\u0161\u00ed vodivost ne\u017e ni\u017e\u0161\u00ed t\u0159\u00eddy; oxid hlinit\u00fd pro l\u00e9ka\u0159sk\u00e9 \u00fa\u010dely m\u00e1 vodivost v rozmez\u00ed 26-30 W\/mK, co\u017e se bl\u00ed\u017e\u00ed vodivosti m\u011bdi, ale zdaleka nedosahuje vodivosti st\u0159\u00edbra. Tepeln\u00e1 vodivost se zvy\u0161uje s rostouc\u00ed \u010distotou a f\u00e1zovou stabilitou materi\u00e1lu, zat\u00edmco jeho tepeln\u00e1 izotropie poskytuje v\u00fdznamn\u00e9 v\u00fdhody oproti materi\u00e1l\u016fm, jako je grafit, kter\u00e9 maj\u00ed m\u00e9n\u011b rovnom\u011brnou vodivost nap\u0159\u00ed\u010d orientac\u00ed krystal\u016f.<\/p>\n
Hlin\u00edkov\u00e1 vl\u00e1kna jsou v\u00fdjime\u010dn\u00fdm materi\u00e1lem, kter\u00fd je ide\u00e1ln\u00ed pro \u010detn\u00e1 pr\u016fmyslov\u00e1 pou\u017eit\u00ed. D\u00edky sv\u00e9 odolnosti v\u016f\u010di korozi a vynikaj\u00edc\u00edm elektroizola\u010dn\u00edm a tepeln\u011b izola\u010dn\u00edm vlastnostem je korundov\u00e9 vl\u00e1kno vynikaj\u00edc\u00ed volbou pro v\u00fdztu\u017e do betonu, elektrickou izolaci a tepeln\u00e9 \u0161t\u00edty, komponenty odoln\u00e9 proti opot\u0159eben\u00ed i aplikace odoln\u00e9 proti opot\u0159eben\u00ed. Obliba hlin\u00edkov\u00fdch vl\u00e1ken by m\u011bla v p\u0159\u00ed\u0161t\u00edch letech jen r\u016fst, proto\u017ee nab\u00edzej\u00ed mnoho pr\u016fmyslov\u00fdch vyu\u017eit\u00ed.<\/p>\n
Hlin\u00edk je v\u00fdjime\u010dn\u00fd tepeln\u00fd izolant, kter\u00fd m\u00e1 vysokou mechanickou pevnost, tvrdost a odolnost proti korozi. Jako takov\u00fd je ide\u00e1ln\u00edm materi\u00e1lem pro v\u00fdrobu sou\u010d\u00e1st\u00ed odoln\u00fdch proti opot\u0159eben\u00ed a d\u00edky vynikaj\u00edc\u00ed tepeln\u00e9 stabilit\u011b je vhodn\u00fd pro pr\u016fmyslov\u00e9, l\u00e9ka\u0159sk\u00e9 a leteck\u00e9 pou\u017eit\u00ed.<\/p>\n
Oxid hlinit\u00fd je univerz\u00e1ln\u00ed technick\u00fd keramick\u00fd materi\u00e1l s mnoha mo\u017enostmi pou\u017eit\u00ed. Obecn\u011b se d\u011bl\u00ed podle obsahu oxidu hlinit\u00e9ho a stupn\u011b \u010distoty - materi\u00e1ly s vy\u0161\u0161\u00ed \u010distotou obecn\u011b vykazuj\u00ed lep\u0161\u00ed vlastnosti.<\/p>\n
Tepeln\u00e1 vodivost oxidu hlinit\u00e9ho je d\u00e1na jeho krystalickou strukturou, hustotou, p\u00f3rovitost\u00ed a f\u00e1zovou transformac\u00ed b\u011bhem sp\u00e9k\u00e1n\u00ed. Tepeln\u00e1 vodivost se zvy\u0161uje s rostouc\u00ed \u010distotou a z\u00e1rove\u0148 kles\u00e1 s teplotou; jeho elektrick\u00e9 vlastnosti a dielektrick\u00fd ztr\u00e1tov\u00fd faktor se zlep\u0161uj\u00ed s dal\u0161\u00edm zvy\u0161ov\u00e1n\u00edm \u010distoty, stejn\u011b jako jeho odolnost proti ot\u011bru a erozi.<\/p>\n
Vysoce \u010dist\u00fd oxid hlinit\u00fd m\u00e1 lep\u0161\u00ed vlastnosti elektrick\u00e9 a tepeln\u00e9 vodivosti d\u00edky ni\u017e\u0161\u00edmu pod\u00edlu f\u00e1ze g a ni\u017e\u0161\u00ed p\u00f3rovitosti a je tak\u00e9 odoln\u011bj\u0161\u00ed v\u016f\u010di f\u00e1zov\u00e9 p\u0159em\u011bn\u011b b\u011bhem sp\u00e9k\u00e1n\u00ed, tak\u017ee je vhodn\u00fd pro celou \u0159adu prost\u0159ed\u00ed a je vysoce obrobiteln\u00fdm keramick\u00fdm materi\u00e1lem.<\/p>\n
Spole\u010dnost CoorsTek navrhla v\u00edce ne\u017e sto slo\u017een\u00ed oxidu hlinit\u00e9ho na m\u00edru, kter\u00e1 jsou speci\u00e1ln\u011b uzp\u016fsobena pro konkr\u00e9tn\u00ed aplikace, s obsahem oxidu hlinit\u00e9ho 80-98% nebo vy\u0161\u0161\u00edm a mikrostrukturou p\u0159izp\u016fsobenou po\u017eadavk\u016fm konkr\u00e9tn\u00edch prost\u0159ed\u00ed.<\/p>\n
Krom\u011b fyzik\u00e1ln\u00edch vlastnost\u00ed z\u00e1vis\u00ed tepeln\u00e1 vodivost oxidu hlinit\u00e9ho tak\u00e9 na jeho velikosti a teplot\u011b. Hlin\u00edky s v\u011bt\u0161\u00edmi krystaly maj\u00ed zpravidla ni\u017e\u0161\u00ed tepelnou vodivost ne\u017e ty s men\u0161\u00edmi krystaly, proto\u017ee t\u011bsn\u011bji zabalen\u00e9 \u010d\u00e1stice maj\u00ed v\u011bt\u0161\u00ed hustotu, co\u017e vede k lep\u0161\u00ed tepeln\u00e9 vodivosti.<\/p>\n
Hlin\u00edk se obvykle vyr\u00e1b\u00ed jako materi\u00e1l b\u00edl\u00e9 barvy, jeho barva se v\u0161ak li\u0161\u00ed v z\u00e1vislosti na surovin\u00e1ch a podm\u00ednk\u00e1ch sp\u00e9k\u00e1n\u00ed. Hlin\u00edk lze tvarovat vst\u0159ikov\u00e1n\u00edm, lisov\u00e1n\u00edm pod tlakem, izostatick\u00fdm lisov\u00e1n\u00edm nebo technikou kluzn\u00e9ho lit\u00ed a vyr\u00e1b\u011bt pomoc\u00ed pokro\u010dil\u00fdch technik obr\u00e1b\u011bn\u00ed na zeleno a na sucho; nav\u00edc jej lze spojovat s kovy a keramikou metodami p\u00e1jen\u00ed a metalizace.<\/p>","protected":false},"excerpt":{"rendered":"
Oxid hlinit\u00fd (Al2O3) je jedn\u00edm z nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00edch oxidov\u00fdch keramick\u00fdch materi\u00e1l\u016f, kter\u00fd se vyzna\u010duje vynikaj\u00edc\u00edmi vlastnostmi, jako je mechanick\u00e1 pevnost, tvrdost, \u017e\u00e1ruvzdornost, [...]<\/p>","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":[3],"tags":[],"class_list":["post-353","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/posts\/353","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/comments?post=353"}],"version-history":[{"count":1,"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/posts\/353\/revisions"}],"predecessor-version":[{"id":354,"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/posts\/353\/revisions\/354"}],"wp:attachment":[{"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/media?parent=353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/categories?post=353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/tags?post=353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}