V inova\u010dn\u00edm centru FEECO se vyhodnocuj\u00ed zku\u0161ebn\u00ed \u0161ar\u017ee oxidu hlinit\u00e9ho, aby se zjistila jeho vhodnost pro konkr\u00e9tn\u00ed pou\u017eit\u00ed. Pokud je materi\u00e1l pou\u017eiteln\u00fd, zpracov\u00e1v\u00e1 se na keramick\u00fd materi\u00e1l po vyp\u00e1len\u00ed, kter\u00fd spl\u0148uje specifikace pou\u017eit\u00ed.<\/p>\n
Hlin\u00edk m\u016f\u017ee glazur\u00e1m dod\u00e1vat matnost p\u0159i velmi n\u00edzk\u00fdch koncentrac\u00edch (m\u00e9n\u011b ne\u017e 5%) t\u00edm, \u017ee sni\u017euje smr\u0161\u0165ov\u00e1n\u00ed zp\u016fsoben\u00e9 obsahem kaolinu a stabilizuje taveniny glazur.<\/p>\n
Odolnost cementov\u00fdch materi\u00e1l\u016f v\u016f\u010di kyselin\u00e1m z\u00e1vis\u00ed na typu a koncentraci kysel\u00e9ho prost\u0159ed\u00ed a na metodice zkou\u0161en\u00ed pou\u017eit\u00e9 k jej\u00edmu posouzen\u00ed.<\/p>\n
Ned\u00e1vn\u00fd v\u00fdvoj zaznamenal dramatick\u00fd pokrok v reologick\u00e9m chov\u00e1n\u00ed, tuhnut\u00ed a strukturn\u00edch vlastnostech pojiv na b\u00e1zi oxidu hlinit\u00e9ho. To lze p\u0159i\u010d\u00edst pokroku v pochopen\u00ed proces\u016f jejich chemick\u00e9 a fyzik\u00e1ln\u00ed tvorby a tak\u00e9 nov\u00fdm typ\u016fm n\u00edzkouhl\u00edkov\u00fdch aktiv\u00e1tor\u016f s ni\u017e\u0161\u00ed ekologickou stopou ne\u017e tradi\u010dn\u00ed fenolov\u00e1 pojiva do betonu.<\/p>\n
Kritickou vlastnost\u00ed AAB je odolnost v\u016f\u010di kyselin\u00e1m. Je v\u0161ak t\u0159eba m\u00edt na pam\u011bti, \u017ee samotn\u00e1 odolnost v\u016f\u010di kyselin\u00e1m neur\u010duje jejich v\u00fdkonnost; v\u00fdkonnost ovliv\u0148uj\u00ed i dal\u0161\u00ed faktory, v\u010detn\u011b typu a koncentrace pou\u017eit\u00fdch kyselin, jako\u017e i stavu povrchu agreg\u00e1t\u016f a samotn\u00e9ho oxidu hlinit\u00e9ho.<\/p>\n
Bauxitov\u00e9 doly a rafinerie se obvykle nach\u00e1zej\u00ed v tropick\u00e9m podneb\u00ed, kde parazit\u00e9, infek\u010dn\u00ed nemoci (nap\u0159. mal\u00e1rie a tuberkul\u00f3za) a nebezpe\u010dn\u00e1\/jedovat\u00e1 zv\u00ed\u0159ata p\u0159edstavuj\u00ed potenci\u00e1ln\u00ed hrozbu onemocn\u011bn\u00ed. Mezi ot\u00e1zky bezpe\u010dnosti pr\u00e1ce na t\u011bchto m\u00edstech pat\u0159\u00ed hluk, vibrace, ergonomick\u00e9 \u00farazy a post\u0159\u00edk\u00e1n\u00ed k\u016f\u017ee nebo o\u010d\u00ed \u017e\u00edravou sodou, jako\u017e i monitorov\u00e1n\u00ed hluku za \u00fa\u010delem posouzen\u00ed zdravotn\u00edch probl\u00e9m\u016f v oblasti d\u00fdchac\u00edch cest, dermatologie a kardiovaskul\u00e1rn\u00edho syst\u00e9mu.<\/p>\n
Bauxitov\u00e1 ruda obsahuje stopov\u00e1 mno\u017estv\u00ed uranu (238U), thoria (232Th) a drasl\u00edku (40K), kter\u00e9 p\u0159i rafinaci t\u00e9m\u011b\u0159 zcela p\u0159ech\u00e1zej\u00ed do proudu pevn\u00fdch zbytk\u016f (materi\u00e1ly Bayerova procesu p\u0159ed sr\u00e1\u017een\u00edm, zbytky bahna, zbytky p\u00edsku a oxidu hlinit\u00e9ho). Pozi\u010dn\u00ed a osobn\u00ed monitorov\u00e1n\u00ed v rafin\u00e9rii Pinjarra v z\u00e1padn\u00ed Austr\u00e1lii uk\u00e1zalo, \u017ee d\u00e1vky z\u00e1\u0159en\u00ed spojen\u00e9 s manipulac\u00ed s t\u011bmito zbytky z\u016fst\u00e1vaj\u00ed pod limity radia\u010dn\u00edho pozad\u00ed, a proto by nem\u011bly p\u0159edstavovat p\u0159\u00edli\u0161 rizikov\u00e9 oz\u00e1\u0159en\u00ed pro pracovn\u00edky, kte\u0159\u00ed s nimi manipuluj\u00ed.<\/p>\n
Pr\u016fmysl oxidu hlinit\u00e9ho vyu\u017e\u00edv\u00e1 chemick\u00e9 zpracov\u00e1n\u00ed k z\u00edsk\u00e1n\u00ed \u010dist\u00e9ho hydroxidu hlinit\u00e9ho pro taven\u00ed. Bauxit slou\u017e\u00ed jako hlavn\u00ed surovina a obsahuje ne\u010distoty, kter\u00e9 lze odstranit fyzik\u00e1ln\u00edm zu\u0161lech\u0165ov\u00e1n\u00edm; t\u00edm se v\u0161ak ne v\u017edy z\u00edsk\u00e1 oxid hlinit\u00fd po\u017eadovan\u00e9 kvality a je t\u0159eba dal\u0161\u00edch chemik\u00e1li\u00ed, proto\u017ee rafin\u00e9rie zlep\u0161uj\u00ed jeho vlastnosti; jeho kone\u010dn\u00e9 produkty nach\u00e1zej\u00ed vyu\u017eit\u00ed v pr\u016fmyslov\u00fdch aplikac\u00edch, jako jsou \u017e\u00e1ruvzdorn\u00e9 materi\u00e1ly a keramika. Hlin\u00edk se m\u016f\u017ee pochlubit vysokou hustotou s nepor\u00e9zn\u00edm povrchem, kter\u00fd odol\u00e1v\u00e1 pronik\u00e1n\u00ed kapalin i plyn\u016f z vn\u011bj\u0161\u00edch zdroj\u016f; je tedy ide\u00e1ln\u00edm kandid\u00e1tem pro pou\u017eit\u00ed jako hlavn\u00ed surovina pro v\u00fdrobu v tomto pr\u016fmyslu.<\/p>\n
Hustota oxidu hlinit\u00e9ho p\u0159\u00edmo souvis\u00ed s jeho p\u00f3rovitost\u00ed, kter\u00e1 je d\u00e1na p\u0159\u00edtomn\u00fdmi ionty kysl\u00edku. Hlin\u00edk s men\u0161\u00edm mno\u017estv\u00edm kysl\u00edkov\u00fdch iont\u016f m\u00e1 v\u011bt\u0161\u00ed hustotu. Hlin\u00edk tak\u00e9 vykazuje dobrou odolnost v\u016f\u010di kyselin\u00e1m d\u00edky reakci s hydroxidov\u00fdmi ionty; d\u00edky t\u00e9to vlastnosti slou\u017e\u00ed jako hlavn\u00ed slo\u017eka materi\u00e1l\u016f pro trysk\u00e1n\u00ed a \u017e\u00e1ruvzdorn\u00fdch cihel a je tak\u00e9 nezbytn\u00fd p\u0159i v\u00fdrob\u011b l\u00e9ka\u0159sk\u00e9 keramiky.<\/p>\n
Pro zv\u00fd\u0161en\u00ed odolnosti oxidu hlinit\u00e9ho v\u016f\u010di kyselin\u00e1m lze jeho povrch upravovat r\u016fzn\u00fdmi kyselinami. Tyto \u00fapravy m\u011bn\u00ed morfologii i chemick\u00e9 slo\u017een\u00ed keramick\u00fdch \u010d\u00e1stic; ned\u00e1vno byly v jedn\u00e9 studii vzorky l\u00e9ka\u0159sk\u00e9ho oxidu hlinit\u00e9ho a zirkonia lept\u00e1ny pomoc\u00ed t\u0159\u00ed kombinac\u00ed kyselin; skenovac\u00ed elektronov\u00e1 mikroskopie pozorovala jejich vzhled, zat\u00edmco mapov\u00e1n\u00ed pomoc\u00ed EDS umo\u017enilo nahl\u00e9dnout do jejich chemick\u00e9ho slo\u017een\u00ed.<\/p>\n
Lept\u00e1n\u00ed kyselinou m\u016f\u017ee b\u00fdt nebezpe\u010dn\u00e1 operace, proto je t\u0159eba p\u0159ijmout ve\u0161ker\u00e1 opat\u0159en\u00ed na ochranu pracovn\u00edk\u016f p\u0159ed vystaven\u00edm nebezpe\u010dn\u00fdm chemik\u00e1li\u00edm. Tato opat\u0159en\u00ed zahrnuj\u00ed no\u0161en\u00ed ochrann\u00e9ho od\u011bvu a ochrann\u00fdch br\u00fdl\u00ed. Rutinn\u00ed testov\u00e1n\u00ed rtuti v rafin\u00e9ri\u00edch oxidu hlinit\u00e9ho se neprov\u00e1d\u00ed, proto\u017ee hladiny rtuti ve vzorc\u00edch mo\u010di pracovn\u00edk\u016f jsou hluboko pod pracovn\u00edm expozi\u010dn\u00edm limitem ACGIH 20 mg\/g kreatininu.<\/p>\n
Keramick\u00e9 materi\u00e1ly z oxidu hlinit\u00e9ho jsou velmi vhodn\u00e9 pro extr\u00e9mn\u00ed provozn\u00ed prost\u0159ed\u00ed d\u00edky sv\u00e9 odolnosti proti ot\u011bru, korozi, teplu a erozi. Technick\u00e1 keramika z oxidu hlinit\u00e9ho je tak\u00e9 vynikaj\u00edc\u00edm tepeln\u00fdm izolantem s elektrick\u00fdmi vlastnostmi, kter\u00e9 se prom\u00edtaj\u00ed do vysok\u00fdch dielektrick\u00fdch hodnot (pro p\u0159evod stejnosm\u011brn\u00fdch frekvenc\u00ed na frekvence GHz). Hlin\u00edkov\u00e1 keramika m\u00e1 nav\u00edc samomazn\u00e9 vlastnosti a rozm\u011brovou stabilitu, co\u017e z n\u00ed \u010din\u00ed vynikaj\u00edc\u00ed volbu pro prost\u0159ed\u00ed s vysok\u00fdmi n\u00e1roky na obsluhu.<\/p>\n
Jemnozrnn\u00fd oxid hlinit\u00fd (Al2O3) se vyzna\u010duje vynikaj\u00edc\u00ed tva\u0159itelnost\u00ed, tak\u017ee je vhodn\u00fd pro vst\u0159ikov\u00e1n\u00ed, such\u00e9 lisov\u00e1n\u00ed, izostatick\u00e9 lisov\u00e1n\u00ed, lisov\u00e1n\u00ed za tepla, kluzn\u00e9 lit\u00ed a kluzn\u00e9 tv\u00e1\u0159en\u00ed. Je k dispozici se stupni \u010distoty od 94% vhodn\u00e9ho pro metalizaci a\u017e po 99,8% pro vysokoteplotn\u00ed aplikace a nab\u00edz\u00ed v\u0161estrannost p\u0159i vytv\u00e1\u0159en\u00ed v\u00fdrobk\u016f v\u0161eho druhu.<\/p>\n
Slou\u010deniny tvrzen\u00e9ho oxidu zirkoni\u010dit\u00e9ho jsou vysoce \u00fa\u010dinn\u00e9 keramick\u00e9 materi\u00e1ly pro extr\u00e9mn\u00ed prost\u0159ed\u00ed, v\u010detn\u011b odolnosti v\u016f\u010di teplot\u00e1m, opot\u0159eben\u00ed, ot\u011bru a chemick\u00e9 inertnosti. Pou\u017e\u00edvaj\u00ed se ve v\u00fdrobn\u00edch aplikac\u00edch pro vlo\u017eky \u010derpadel, sou\u010d\u00e1sti ventil\u016f, pouzdra p\u00edst\u016f z\u00e1tky atd. a d\u00edky sv\u00e9 vysok\u00e9 lomov\u00e9 hou\u017eevnatosti jsou korundov\u00e9 keramiky vynikaj\u00edc\u00ed volbou pro p\u0159esn\u00e9 obr\u00e1b\u011bc\u00ed procesy.<\/p>\n
Ingoty a pr\u00e1\u0161ky oxidu hlinit\u00e9ho lze obr\u00e1b\u011bt tradi\u010dn\u00edmi metodami obr\u00e1b\u011bn\u00ed na zeleno a na biskvit, zat\u00edmco jejich pln\u00e9 zhu\u0161t\u011bn\u00ed vy\u017eaduje proces slinov\u00e1n\u00ed, p\u0159i kter\u00e9m doch\u00e1z\u00ed ke zna\u010dn\u00e9mu smr\u0161t\u011bn\u00ed, kter\u00e9 vy\u017eaduje diamantov\u00e9 n\u00e1stroje pro p\u0159esn\u00e9 obr\u00e1b\u011bn\u00ed. Hlin\u00edk se \u010dasto pou\u017e\u00edv\u00e1 jako ekonomick\u00e1 alternativa oceli p\u0159i brou\u0161en\u00ed a \u0159ez\u00e1n\u00ed d\u00edky sv\u00e9mu n\u00edzk\u00e9mu koeficientu t\u0159en\u00ed a trvanlivosti; to v\u00fdrazn\u011b sni\u017euje provozn\u00ed n\u00e1klady.<\/p>\n
Hlin\u00edk lze hasit mnoha kapalinami, v\u010detn\u011b vody, alkohol\u016f, kyselin a glycerinu, p\u0159i\u010dem\u017e glycerin m\u00e1 ze v\u0161ech kapalin nejvy\u0161\u0161\u00ed bod varu a rozkladu. N\u00edzk\u00e1 rozpustnost \u010dist\u00e9ho oxidu hlinit\u00e9ho tak\u00e9 p\u0159isp\u00edv\u00e1 k jeho odolnosti proti chemick\u00e9 korozi, proto\u017ee odol\u00e1v\u00e1 siln\u00fdm kyselin\u00e1m a z\u00e1sad\u00e1m, ale ne vod\u011b.<\/p>\n
Vysok\u00e1 tvrdost oxidu hlinit\u00e9ho je kritickou vlastnost\u00ed p\u0159i jeho v\u00fdrobn\u00edch procesech, proto\u017ee d\u00edky jeho pevnosti jsou relativn\u011b energeticky \u00fa\u010dinn\u00e9. Tvrdost oxidu hlinit\u00e9ho je d\u016fsledkem siln\u00fdch vazeb mezi jeho t\u011bsn\u011b uspo\u0159\u00e1dan\u00fdmi krystalick\u00fdmi strukturami, kter\u00e9 mu dod\u00e1vaj\u00ed pevnost a z\u00e1rove\u0148 odol\u00e1vaj\u00ed l\u00e1m\u00e1n\u00ed. T\u00edm se st\u00e1v\u00e1 jedn\u00edm z nejtvrd\u0161\u00edch materi\u00e1l\u016f na sv\u011bt\u011b; je t\u0159ikr\u00e1t tvrd\u0161\u00ed ne\u017e nerezov\u00e1 ocel, respektive \u010dty\u0159ikr\u00e1t tvrd\u0161\u00ed ne\u017e karbid k\u0159em\u00edku.<\/p>\n
V\u00fdrobci hlin\u00edku dnes \u010del\u00ed jedn\u00e9 z nejv\u011bt\u0161\u00edch v\u00fdzev p\u0159i v\u00fdvoji inertn\u00edch anod pro pr\u016fmyslov\u00e9 reduk\u010dn\u00ed \u010dl\u00e1nky oxidu hlinit\u00e9ho. M\u011bd\u011bn\u00e9 anody byly zpo\u010d\u00e1tku pova\u017eov\u00e1ny za vhodnou alternativu; jejich rychl\u00e9 rozpou\u0161t\u011bn\u00ed v elektrolytu v\u0161ak ohro\u017eovalo \u010derstv\u011b vyroben\u00fd hlin\u00edk a rychle jej d\u00e1le zne\u010di\u0161\u0165ovalo - jedin\u00fdm \u017eivotaschopn\u00fdm a praktick\u00fdm \u0159e\u0161en\u00edm, kter\u00e9 maj\u00ed k dispozici, z\u016fst\u00e1vaj\u00ed uhl\u00edkov\u00e9 anody.<\/p>\n
Dal\u0161\u00ed v\u00fdzva, kter\u00e9 \u010del\u00ed v\u00fdroba hlin\u00edku, spo\u010d\u00edv\u00e1 ve sni\u017eov\u00e1n\u00ed spot\u0159eby energie. V sou\u010dasn\u00e9 dob\u011b spot\u0159ebuje hlin\u00edk\u00e1rensk\u00fd pr\u016fmysl p\u0159i v\u00fdrob\u011b 13-11 kWh\/kg Al, co\u017e je dvojn\u00e1sobek toho, co by m\u011blo b\u00fdt nezbytn\u00e9. To je zp\u016fsobeno p\u0159edev\u0161\u00edm t\u00edm, \u017ee v\u011bt\u0161inu t\u00e9to energie dod\u00e1vaj\u00ed uheln\u00e9 elektr\u00e1rny. Sn\u00ed\u017een\u00ed spot\u0159eby energie bude m\u00edt pozitivn\u00ed p\u0159\u00ednos pro \u017eivotn\u00ed prost\u0159ed\u00ed a efektivitu, co\u017e p\u0159isp\u011bje ke zv\u00fd\u0161en\u00ed \u00fa\u010dinnosti v\u00fdroby hlin\u00edku.<\/p>\n
Hlin\u00edk hraje z\u00e1sadn\u00ed roli p\u0159i zachycov\u00e1n\u00ed fluorovod\u00edku vznikaj\u00edc\u00edho v anodov\u00fdch \u010dl\u00e1nc\u00edch. Pr\u00e1\u0161kov\u00fd oxid hlinit\u00fd tento plyn pohlcuje a sou\u010dasn\u011b zachycuje fluoridov\u00e9 kondenz\u00e1ty, jako jsou \u010d\u00e1stice tetrafluorohlinitanu sodn\u00e9ho (NaAlF4), kter\u00e9 se pak vracej\u00ed zp\u011bt do za\u0159\u00edzen\u00ed na \u010di\u0161t\u011bn\u00ed kou\u0159e, ne\u017e se vr\u00e1t\u00ed zp\u011bt do v\u00fdrobn\u00edch komor pro tavic\u00ed operace. Sn\u00ed\u017een\u00ed emis\u00ed HF plyn\u016f v\u00fdznamn\u011b p\u0159isp\u00edv\u00e1 k bezpe\u010dnosti v rafin\u00e9ri\u00edch oxidu hlinit\u00e9ho i v dolech.<\/p>\n
Vysok\u00e1 tvrdost, vynikaj\u00edc\u00ed pevnost a odolnost proti n\u00e1razu a ot\u011bru \u010din\u00ed z oxidu hlinit\u00e9ho ide\u00e1ln\u00ed materi\u00e1l pro v\u00fdrobu pr\u016fmyslov\u00fdch v\u00fdrobk\u016f a stroj\u016f. Jeho \u017e\u00e1ruvzdorn\u00e9 vlastnosti nav\u00edc pom\u00e1haj\u00ed odol\u00e1vat vysok\u00fdm teplot\u00e1m, kter\u00e9 se b\u011b\u017en\u011b vyskytuj\u00ed v \u017e\u00e1ruvzdorn\u00e9m pr\u016fmyslu - kde se pou\u017e\u00edv\u00e1 v procesech, jako je petrochemick\u00e9 zpracov\u00e1n\u00ed, spalov\u00e1n\u00ed odpadu, v\u00fdroba cementu a v\u00fdroba \u017eeleza a oceli.<\/p>\n
Mohsova tvrdost 9 \u0159ad\u00ed oxid hlinit\u00fd na druh\u00e9 m\u00edsto po diamantu, pokud jde o tvrdost. Je schopen odolat ot\u011bru ocelov\u00fdch kuli\u010dek i n\u00e1raz\u016fm st\u0159elby z ru\u010dn\u00edch zbran\u00ed a d\u011bl st\u0159edn\u00ed r\u00e1\u017ee a d\u00edky sv\u00e9 tvrdosti a odolnosti je vhodn\u00fd i jako ochrann\u00fd panc\u00e9\u0159ov\u00fd materi\u00e1l.<\/p>\n
Hlin\u00edk se od ostatn\u00edch materi\u00e1l\u016f odli\u0161uje svou tvrdost\u00ed, chemickou inertnost\u00ed a odolnost\u00ed v\u016f\u010di p\u016fsoben\u00ed kyselin, nebo\u0165 je odoln\u00fd v\u016f\u010di kyselin\u011b ortofosfore\u010dn\u00e9 a fluorovod\u00edkov\u00e9 a mnoha dal\u0161\u00edm. Krom\u011b toho je d\u00edky sv\u00fdm elektroizola\u010dn\u00edm vlastnostem a \u010distot\u011b - a\u017e 99% - vhodn\u00fd pro elektronick\u00e9 substr\u00e1ty a izol\u00e1tory.<\/p>\n
ZTA (zirkonem zpevn\u011bn\u00fd oxid hlinit\u00fd) je slitina vytvo\u0159en\u00e1 p\u0159im\u00edch\u00e1n\u00edm yttria stabilizovan\u00e9ho zirkonu (YSZ) do matrice oxidu hlinit\u00e9ho, aby se optimalizovaly vlastnosti tohoto materi\u00e1lu z hlediska opot\u0159eben\u00ed. Zv\u00fd\u0161en\u00edm pevnosti v ohybu, lomov\u00e9 hou\u017eevnatosti, odolnosti proti ot\u011bru a st\u00e1rnut\u00ed YSZ je ZTA m\u00e9n\u011b n\u00e1chyln\u00fd ke st\u00e1rnut\u00ed v pr\u016fb\u011bhu \u010dasu.<\/p>\n
Odolnost keramiky ZTA proti abrazi je p\u0159\u00edmo z\u00e1visl\u00e1 na struktu\u0159e zrn a rozlo\u017een\u00ed \u010d\u00e1stic; pro optim\u00e1ln\u00ed v\u00fdkon by m\u011bla b\u00fdt zrna jemn\u011bj\u0161\u00ed a s hustou strukturou, kter\u00e1 rovnom\u011brn\u011b rozd\u011bluje velikosti \u010d\u00e1stic. Schopnost oh\u00fdb\u00e1n\u00ed tak\u00e9 do zna\u010dn\u00e9 m\u00edry z\u00e1vis\u00ed na struktu\u0159e zrn; p\u0159i optimalizaci ohybatelnosti hraj\u00ed z\u00e1sadn\u00ed roli tempera\u010dn\u00ed materi\u00e1ly, proto\u017ee ur\u010duj\u00ed pevnost vazby mezi jednotliv\u00fdmi zrny.<\/p>","protected":false},"excerpt":{"rendered":"
At FEECO Innovation Center, test batches of alumina are evaluated to ascertain its suitability for specific uses. If viable, the […]<\/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-570","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/posts\/570","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=570"}],"version-history":[{"count":1,"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/posts\/570\/revisions"}],"predecessor-version":[{"id":571,"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/posts\/570\/revisions\/571"}],"wp:attachment":[{"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/media?parent=570"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/categories?post=570"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/artehistoria.net\/cs\/wp-json\/wp\/v2\/tags?post=570"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}