Zirkonov\u00fd tvrzen\u00fd oxid hlinit\u00fd (ZTA) je mimo\u0159\u00e1dn\u011b tvrd\u00e1 technick\u00e1 keramika s vynikaj\u00edc\u00ed odolnost\u00ed proti korozi a rozm\u011brovou st\u00e1lost\u00ed, d\u00edky \u010demu\u017e je vhodn\u00e1 pro nosn\u00e9 aplikace, jako jsou ortopedick\u00e9 implant\u00e1ty a dent\u00e1ln\u00ed komponenty.<\/p>\n
ZTA vznik\u00e1 p\u0159im\u00edch\u00e1n\u00edm nestabilizovan\u00fdch \u010d\u00e1stic zirkonia do matrice oxidu hlinit\u00e9ho, kde jeho p\u0159\u00edtomnost br\u00e1n\u00ed metastabiln\u00edmu tetragon\u00e1ln\u00edmu zirkoniu ve f\u00e1zov\u00e9m p\u0159echodu do nev\u00fdhodn\u00e9 kubick\u00e9 formy, a t\u00edm zlep\u0161uje lomovou hou\u017eevnatost a pevnost.<\/p>\n
Zirkonem tvrzen\u00fd oxid hlinit\u00fd (ZTA) je extr\u00e9mn\u011b odoln\u00fd keramick\u00fd materi\u00e1l s trvanlivost\u00ed a izola\u010dn\u00edmi vlastnostmi b\u011b\u017en\u00e9ho oxidu hlinit\u00e9ho, kter\u00fd je v\u0161ak v\u00fdrazn\u011b pevn\u011bj\u0161\u00ed. D\u00edky t\u00e9to kombinaci je ZTA ide\u00e1ln\u00ed pro pou\u017eit\u00ed v \u0159ad\u011b pr\u016fmyslov\u00fdch za\u0159\u00edzen\u00ed a tak\u00e9 v prost\u0159ed\u00ed s vysok\u00fdmi teplotami, kter\u00e9 se vyskytuj\u00ed nap\u0159\u00edklad ve farmaceutick\u00e9m pr\u016fmyslu. Krom\u011b toho se ZTA m\u016f\u017ee pochlubit vy\u0161\u0161\u00ed odolnost\u00ed proti korozi ne\u017e b\u011b\u017en\u00fd oxid hlinit\u00fd, kter\u00fd vydr\u017e\u00ed teploty a\u017e 1773 K, co\u017e jej \u010din\u00ed vhodn\u00fdm pro za\u0159\u00edzen\u00ed pou\u017e\u00edvan\u00e1 v drsn\u00fdch nebo n\u00e1ro\u010dn\u00fdch prost\u0159ed\u00edch; nav\u00edc se m\u016f\u017ee pochlubit n\u00edzk\u00fdm koeficientem tepeln\u00e9 rozta\u017enosti, co\u017e \u010din\u00ed rozm\u011brovou stabilitu v t\u011bchto n\u00e1ro\u010dn\u00fdch situac\u00edch z\u00e1sadn\u00ed.<\/p>\n
ZTA se vyr\u00e1b\u00ed sm\u00edch\u00e1n\u00edm oxidu hlinit\u00e9ho se zirkonem stabilizovan\u00fdm yttriem (YSZ) nebo nestabilizovan\u00fdm zirkonem (UNZ). V\u00fdsledkem je kompozitn\u00ed materi\u00e1l, kter\u00fd je mnohem pevn\u011bj\u0161\u00ed ne\u017e oba materi\u00e1ly samotn\u00e9 a m\u00e1 vy\u0161\u0161\u00ed lomovou hou\u017eevnatost ve srovn\u00e1n\u00ed se standardn\u00edmi materi\u00e1ly z oxidu hlinit\u00e9ho - ZTA je tak vynikaj\u00edc\u00ed volbou materi\u00e1lu pro aplikace vy\u017eaduj\u00edc\u00ed pevnost i odolnost, jako jsou lo\u017eiskov\u00e9 p\u00e1ry p\u0159i operac\u00edch ky\u010deln\u00edch n\u00e1hrad.<\/p>\n
ZTA dosahuje sv\u00e9 lomov\u00e9 hou\u017eevnatosti d\u00edky transforma\u010dn\u00edmu zpevn\u011bn\u00ed, p\u0159i kter\u00e9m se \u010d\u00e1stice zirkonu v kompozitu p\u0159i nam\u00e1h\u00e1n\u00ed m\u011bn\u00ed z tetragon\u00e1ln\u00ed na monoklinickou krystalovou strukturu, co\u017e vede ke stla\u010den\u00ed a t\u0159en\u00ed o matrici oxidu hlinit\u00e9ho, co\u017e v\u00fdrazn\u011b zvy\u0161uje lomovou hou\u017eevnatost materi\u00e1lu. D\u00edky t\u00e9to vlastnosti je ZTA zvl\u00e1\u0161t\u011b vhodn\u00fd pro konstruk\u010dn\u00ed aplikace, nap\u0159\u00edklad pro pou\u017eit\u00ed v pr\u016fmyslov\u00fdch nebo leteck\u00fdch komponentech.<\/p>\n
Sou\u010d\u00e1stky ZTA vyr\u00e1b\u011bn\u00e9 s pou\u017eit\u00edm yttria stabilizovan\u00e9ho zirkonia (YSZ) \u010dasto dosahuj\u00ed vy\u0161\u0161\u00ed \u00farovn\u011b hou\u017eevnatosti d\u00edky sv\u00e9 schopnosti odol\u00e1vat extr\u00e9mn\u011bj\u0161\u00edm podm\u00ednk\u00e1m ne\u017e nestabilizovan\u00fd oxid hlinit\u00fd, nap\u0159\u00edklad vy\u0161\u0161\u00edm teplot\u00e1m. Krom\u011b toho m\u00e1 tento materi\u00e1l ve srovn\u00e1n\u00ed se sv\u00fdm nestabilizovan\u00fdm prot\u011bj\u0161kem vy\u0161\u0161\u00ed chemickou stabilitu a odolnost proti opot\u0159eben\u00ed.<\/p>\n
YSZ lze tak\u00e9 kombinovat s nestabilizovan\u00fdm oxidem hlinit\u00fdm a z\u00edskat tak je\u0161t\u011b pevn\u011bj\u0161\u00ed a hou\u017eevnat\u011bj\u0161\u00ed kompozitn\u00ed materi\u00e1l, zn\u00e1m\u00fd jako ATZ. Kompozity ATZ se staly z\u00e1kladn\u00edm materi\u00e1lem p\u0159i operac\u00edch modern\u00edch ky\u010deln\u00edch n\u00e1hrad; jedn\u00edm z popul\u00e1rn\u00edch p\u0159\u00edklad\u016f je BIOLOX delta od spole\u010dnosti CeramTec, kter\u00fd slou\u017e\u00ed jako kuli\u010dka i kal\u00ed\u0161ek.<\/p>\n
Vynikaj\u00edc\u00ed lomov\u00e1 hou\u017eevnatost a pevnost oxidu zirkoni\u010dit\u00e9ho z n\u011bj \u010din\u00ed vynikaj\u00edc\u00ed materi\u00e1l pro v\u00fdrobu lo\u017eisek, distan\u010dn\u00edch prvk\u016f a dal\u0161\u00edch mechanick\u00fdch sou\u010d\u00e1st\u00ed, kter\u00e9 mus\u00ed odol\u00e1vat vysok\u00e9mu nam\u00e1h\u00e1n\u00ed. Jeho specifick\u00e1 tuhost nav\u00edc p\u0159isp\u00edv\u00e1 k lehk\u00fdm konstrukc\u00edm t\u00edm, \u017ee p\u0159id\u00e1v\u00e1 lehk\u00e9 prvky.<\/p>\n
Zirkoniov\u00e1 keramika obsa\u017een\u00e1 v matrici ZTA poskytuje vynikaj\u00edc\u00ed elektrickou izolaci a teplotn\u00ed toleranci, tak\u017ee je vhodn\u00e1 pro za\u0159\u00edzen\u00ed, kter\u00e1 mus\u00ed odol\u00e1vat intenzivn\u00edm pr\u016fmyslov\u00fdm proces\u016fm. Krom\u011b toho se tento materi\u00e1l m\u016f\u017ee pochlubit v\u00fdjime\u010dnou odolnost\u00ed proti chemick\u00e9 korozi v drsn\u00e9m prost\u0159ed\u00ed.<\/p>\n
Kombinace oxidu hlinit\u00e9ho a zirkonu vytv\u00e1\u0159\u00ed mimo\u0159\u00e1dn\u011b univerz\u00e1ln\u00ed keramick\u00fd materi\u00e1l, kter\u00fd p\u0159ed\u010d\u00ed jakoukoli z jejich samostatn\u00fdch vlastnost\u00ed. Hlin\u00edk poskytuje tvrdost a hou\u017eevnatost, zat\u00edmco zirkon zvy\u0161uje hou\u017eevnatost a odolnost proti tepeln\u00fdm \u0161ok\u016fm - vznik\u00e1 tak mimo\u0159\u00e1dn\u011b univerz\u00e1ln\u00ed materi\u00e1l s neomezen\u00fdm vyu\u017eit\u00edm.<\/p>\n
Jedn\u00edm z takov\u00fdch p\u0159\u00edklad\u016f je st\u00e1le \u010dast\u011bj\u0161\u00ed pou\u017e\u00edv\u00e1n\u00ed kompozit\u016f oxidu hlinit\u00e9ho a zirkonu v ky\u010deln\u00edch n\u00e1hrad\u00e1ch, kde p\u0159id\u00e1n\u00ed YSZ umo\u017e\u0148uje dos\u00e1hnout optim\u00e1ln\u00ed kombinace tvrdosti, lomov\u00e9 hou\u017eevnatosti a pevnosti v ohybu u materi\u00e1l\u016f lo\u017eiskov\u00e9ho p\u00e1ru t\u011bchto n\u00e1hrad. V\u00fdsledkem je, \u017ee tyto materi\u00e1ly vytv\u00e1\u0159ej\u00ed pevn\u00e1 a z\u00e1rove\u0148 odoln\u00e1 \u0159e\u0161en\u00ed s p\u0159irozen\u011bj\u0161\u00edm pohybem ky\u010deln\u00edho kloubu ne\u017e alternativn\u00ed materi\u00e1ly.<\/p>\n
Zirkonovou keramiku lze pou\u017e\u00edt v mnoha aplikac\u00edch, zejm\u00e9na v t\u011bch, kter\u00e9 vy\u017eaduj\u00ed vysokou odolnost proti tepeln\u00fdm \u0161ok\u016fm nebo p\u0159esnou shodu CTE s \u017eelezn\u00fdmi nebo feritov\u00fdmi sou\u010d\u00e1stmi, jako jsou vysokoteplotn\u00ed trysky, kel\u00edmky a topn\u00e1 t\u011blesa. Krom\u011b toho se zirkoniov\u00e1 keramika d\u00edky sv\u00e9 schopnosti tolerovat extr\u00e9mn\u00ed teploty osv\u011bd\u010dila v aplikac\u00edch pro leteck\u00fd a v\u011bdeck\u00fd v\u00fdzkum.<\/p>\n
Kompozity hlin\u00edku a zirkonu se rovn\u011b\u017e vyzna\u010duj\u00ed vynikaj\u00edc\u00ed odolnost\u00ed proti opot\u0159eben\u00ed, co\u017e z nich \u010din\u00ed z\u00e1sadn\u00ed prvek v pr\u016fmyslov\u00fdch aplikac\u00edch, kde doch\u00e1z\u00ed k pravideln\u00e9mu t\u0159en\u00ed. To m\u016f\u017ee prodlou\u017eit \u017eivotnost v\u00fdrobku a z\u00e1rove\u0148 sn\u00ed\u017eit n\u00e1klady na \u00fadr\u017ebu a prostoje a sou\u010dasn\u011b zv\u00fd\u0161it produktivitu.<\/p>\n
Kompozitn\u00ed keramika BIOLOX delta spole\u010dnosti CeramTec t\u011b\u017e\u00ed z toho, \u017ee je konsolidov\u00e1na pomoc\u00ed izostatick\u00e9ho lisov\u00e1n\u00ed za tepla, \u010d\u00edm\u017e se eliminuj\u00ed dutiny a zvy\u0161uje hou\u017eevnatost, a z\u00e1rove\u0148 je snadno obrobiteln\u00e1 pro vynikaj\u00edc\u00ed mechanick\u00e9 vlastnosti s vynikaj\u00edc\u00ed ohybovou a lomovou hou\u017eevnatost\u00ed, tvrdost\u00ed oxidu hlinit\u00e9ho a z\u00e1rove\u0148 obrobitelnost\u00ed - v\u00fdrobci \u0159ezn\u00fdch no\u017e\u016f tak maj\u00ed na v\u00fdb\u011br z cel\u00e9 \u0159ady tvar\u016f a profil\u016f.<\/p>\n
Vzhledem k tomu, \u017ee se p\u0159i v\u00fdrob\u011b ZTA pou\u017e\u00edv\u00e1 zirkon, nab\u00edz\u00ed v porovn\u00e1n\u00ed s monolitickou keramikou z oxidu hlinit\u00e9ho vy\u0161\u0161\u00ed odolnost proti korozi. Tato v\u00fdhoda vypl\u00fdv\u00e1 ze zv\u00fd\u0161en\u00ed hou\u017eevnatosti v d\u016fsledku p\u0159id\u00e1n\u00ed zirkonia; to zase vede k v\u011bt\u0161\u00ed odolnosti proti korozi; to umo\u017e\u0148uje m\u00e9n\u011b \u010dastou degradaci b\u011bhem \u017eivotnosti, co\u017e vede k ni\u017e\u0161\u00edm n\u00e1klad\u016fm na \u00fadr\u017ebu za\u0159\u00edzen\u00ed a ni\u017e\u0161\u00edm v\u00fddaj\u016fm na servisn\u00ed \u00fadr\u017ebu.<\/p>\n
Zirkonium p\u0159idan\u00e9 do oxidu hlinit\u00e9ho m\u016f\u017ee p\u0159isp\u011bt k jeho odolnosti v\u016f\u010di teplotn\u00edm \u0161ok\u016fm, co\u017e je d\u016fle\u017eit\u00fd aspekt v\u00fdkonu, proto\u017ee oxid hlinit\u00fd m\u00e1 tendenci praskat p\u0159i n\u00e1hl\u00fdch zm\u011bn\u00e1ch vysok\u00fdch teplot. D\u00edky zv\u00fd\u0161en\u00e9 pevnosti a hou\u017eevnatosti ZTA oproti jeho hlin\u00edkov\u00e9mu prot\u011bj\u0161ku se v\u0161ak odolnost proti teplotn\u00edm \u0161ok\u016fm v\u00fdrazn\u011b zvy\u0161uje.<\/p>\n
P\u0159\u00eddavek zirkonia do oxidu hlinit\u00e9ho m\u016f\u017ee zv\u00fd\u0161it jeho chemickou stabilitu, co\u017e m\u00e1 z\u00e1sadn\u00ed v\u00fdznam v aplikac\u00edch, kde p\u0159ich\u00e1z\u00ed do styku s korozivn\u00edmi m\u00e9dii. Tohoto zv\u00fd\u0161en\u00ed lze dos\u00e1hnout transformac\u00ed tetragon\u00e1ln\u00edch \u010d\u00e1stic zirkonia vyvolanou nap\u011bt\u00edm na monoklinick\u00e9 \u010d\u00e1stice zirkonia, co\u017e je efekt zn\u00e1m\u00fd jako disperzn\u00ed zpevn\u011bn\u00ed.<\/p>\n
Experiment proveden\u00fd s vyu\u017eit\u00edm Box-Behnkenova vzorce s dobou pono\u0159en\u00ed a\u017e 240 hodin a r\u016fzn\u00fdmi koncentracemi kyseliny dusi\u010dn\u00e9 (HNO3) zjistil, \u017ee chemick\u00e1 stabilita slinut\u00e9ho oxidu hlinit\u00e9ho kles\u00e1 s rostouc\u00ed koncentrac\u00ed HNO3, zat\u00edmco keramika vykazuje lep\u0161\u00ed chemickou odolnost p\u0159i ni\u017e\u0161\u00edch koncentrac\u00edch HNO3 a p\u0159i krat\u0161\u00ed dob\u011b pono\u0159en\u00ed.<\/p>\n
Keramika z oxidu hlinit\u00e9ho a zirkonia poskytuje vynikaj\u00edc\u00ed odolnost proti korozi v kombinaci s v\u00fdjime\u010dnou hou\u017eevnatost\u00ed a pevnost\u00ed v ohybu, tak\u017ee je vhodn\u00e1 pro pou\u017eit\u00ed v r\u016fzn\u00fdch prost\u0159ed\u00edch. Zirkonem tvrzen\u00fd oxid hlinit\u00fd (ZTA) se obvykle vol\u00ed v p\u0159\u00edpadech, kdy po\u017eadavky na pevnost, trvanlivost a odolnost proti korozi p\u0159evy\u0161uj\u00ed po\u017eadavky standardn\u00ed korundov\u00e9 keramiky; nav\u00edc m\u00e1 ni\u017e\u0161\u00ed koeficienty line\u00e1rn\u00ed tepeln\u00e9 rozta\u017enosti ne\u017e jeho prot\u011bj\u0161ek korundov\u00e1 keramika pro \u00fa\u010dely chlazen\u00ed.<\/p>\n
Zirkonem tvrzen\u00fd oxid hlinit\u00fd (ZTA) je modern\u00ed kompozit, kter\u00fd ve srovn\u00e1n\u00ed s \u010dist\u00fdm oxidem hlinit\u00fdm nab\u00edz\u00ed v\u00fdrazn\u011b vy\u0161\u0161\u00ed pevnost, lomovou hou\u017eevnatost, tvrdost a pevnost v ohybu. Krom\u011b toho se ZTA m\u016f\u017ee pochlubit vynikaj\u00edc\u00edmi elektroizola\u010dn\u00edmi vlastnostmi a odolnost\u00ed proti korozi a tak\u00e9 n\u00edzk\u00fdm koeficientem tepeln\u00e9 rozta\u017enosti - ide\u00e1ln\u00ed pro d\u00edly, kter\u00e9 vy\u017eaduj\u00ed rozm\u011brovou stabilitu.<\/p>\n
Pr\u00e1\u0161ek ZTA, vyr\u00e1b\u011bn\u00fd z pr\u00e1\u0161kov\u00e9ho zirkonu stabilizovan\u00e9ho yttri\u00ed, je d\u00edky sv\u00e9 biokompatibilit\u011b, mechanick\u00fdm vlastnostem a chemick\u00e9 stabilit\u011b alternativou k ATZ pro implant\u00e1ty ky\u010deln\u00edch n\u00e1hrad. ZTA m\u016f\u017ee tak\u00e9 poskytnout \u0159e\u0161en\u00ed pro sou\u010d\u00e1sti vystaven\u00e9 extr\u00e9mn\u00edm podm\u00ednk\u00e1m, kter\u00e9 se rychle opot\u0159ebov\u00e1vaj\u00ed v d\u016fsledku opot\u0159eben\u00ed a koroze, jako jsou p\u0159\u00edruby, obj\u00edmky a konektory, kter\u00e9 vy\u017eaduj\u00ed ochranu p\u0159ed opot\u0159eben\u00edm a koroz\u00ed v d\u016fsledku vystaven\u00ed extr\u00e9mn\u00edm podm\u00ednk\u00e1m, jako jsou p\u0159\u00edruby. obj\u00edmky nebo konektory.<\/p>\n
Odolnost materi\u00e1l\u016f proti tepeln\u00fdm \u0161ok\u016fm je v\u00fdsledkem kombinace n\u011bkolika faktor\u016f, v\u010detn\u011b jejich n\u00edzk\u00e9 m\u011brn\u00e9 tepeln\u00e9 kapacity a p\u00f3rovitosti, jako\u017e i vysok\u00e9 lomov\u00e9 hou\u017eevnatosti a pevnosti v ohybu. Ned\u00edlnou roli v odolnosti proti tepeln\u00e9mu \u0161oku hraje tak\u00e9 geometrie - tvar a velikost sou\u010d\u00e1st\u00ed mohou dostate\u010dn\u011b sn\u00ed\u017eit jejich odolnost, stejn\u011b jako faktory drsnosti povrchu a hustoty p\u00f3r\u016f.<\/p>\n
ZTA se vyr\u00e1b\u011bj\u00ed lit\u00edm do gelu, p\u0159i kter\u00e9m se sm\u00edch\u00e1 pr\u00e1\u0161kov\u00fd oxid hlinit\u00fd a yttri\u00ed stabilizovan\u00fd zirkonov\u00fd pr\u00e1\u0161ek a vytvo\u0159\u00ed se suspenze, kter\u00e1 se odl\u00e9v\u00e1 do po\u017eadovan\u00e9 \u010d\u00e1sti pomoc\u00ed lisov\u00e1n\u00ed. Jakmile tato suspenze vyschne, su\u0161\u00ed se bu\u010f rozpou\u0161t\u011bdlem, nebo osmoticky, pyrolyzuje se a slinuje p\u0159i teplot\u011b 1550 stup\u0148\u016f C, resp. 1650 stup\u0148\u016f C pro dal\u0161\u00ed zpracov\u00e1n\u00ed a slinov\u00e1n\u00ed, \u010d\u00edm\u017e vznik\u00e1 ZTA. Pro optimalizaci tohoto v\u00fdrobn\u00edho procesu m\u016f\u017ee m\u00edt pevn\u00e9 zat\u00ed\u017een\u00ed b\u011bhem p\u0159\u00edpravy; typ odformov\u00e1n\u00ed; su\u0161en\u00ed rozpou\u0161t\u011bdlem bu\u010f na vzduchu versus su\u0161en\u00ed rozpou\u0161t\u011bdlem bu\u010f osmotick\u00e9 su\u0161en\u00ed versus su\u0161en\u00ed na vzduchu; stejn\u011b jako vliv na mechanick\u00e9 vlastnosti, jako je hustota, tvrdost lomov\u00e1 hou\u017eevnatost a pevnost v ohybu, to v\u0161e m\u016f\u017ee m\u00edt z\u00e1sadn\u00ed vliv na mechanick\u00e9 vlastnosti, jako je hustota, tvrdost lomov\u00e1 hou\u017eevnatost a pevnost v ohybu t\u011bchto vlastnost\u00ed mechanick\u00fdch vlastnost\u00ed, jako je hustota tvrdost lomov\u00e1 hou\u017eevnatost a pevnost v ohybu.<\/p>\n
P\u0159\u00eddavek v\u011bt\u0161\u00edho mno\u017estv\u00ed zirkonia stabilizovan\u00e9ho yttriem do matrice oxidu hlinit\u00e9ho zvy\u0161uje lomovou hou\u017eevnatost prost\u0159ednictv\u00edm transformace, tvorby mikrotrhlin a proces\u016f disperzn\u00edho zpevn\u011bn\u00ed. Zv\u00fd\u0161en\u00ed lomov\u00e9 hou\u017eevnatosti nav\u00edc zvy\u0161uje shodu CTE mezi \u017eelezem a feritem, d\u00edky \u010demu\u017e je ZTA vhodn\u00fd pro aplikace, jako jsou vysokoteplotn\u00ed trysky, kel\u00edmky, topn\u00e1 t\u011blesa nebo dokonce sou\u010d\u00e1sti, v nich\u017e je um\u00edst\u011bna izolace m\u011bd\u011bn\u00e9ho dr\u00e1tu.<\/p>","protected":false},"excerpt":{"rendered":"
Zirconia toughened alumina (ZTA) is an exceptionally hard technical ceramic with outstanding corrosion resistance and dimensional stability, making it well […]<\/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-626","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/posts\/626","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=626"}],"version-history":[{"count":1,"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/posts\/626\/revisions"}],"predecessor-version":[{"id":627,"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/posts\/626\/revisions\/627"}],"wp:attachment":[{"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/media?parent=626"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/categories?post=626"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/tags?post=626"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}