Vi\u0161ti\u010dky karbidu krem\u00edka sa be\u017ene pou\u017e\u00edvaj\u00fa na spevnenie a h\u00fa\u017eevnatos\u0165 kovov\u00fdch, keramick\u00fdch a polym\u00e9rnych kompozitov, \u010d\u00edm sa zvy\u0161uje lomov\u00e1 h\u00fa\u017eevnatos\u0165, pevnos\u0165 v ohybe, odolnos\u0165 vo\u010di oxid\u00e1cii a lomov\u00e1 h\u00fa\u017eevnatos\u0165 ich kompozitov.<\/p>\n
Disperzie SiCw sa hodnotili pomocou pr\u00edstroja Malvern Nano ZS90 na anal\u00fdzu ich povrchov\u00e9ho Zeta potenci\u00e1lu pod\u013ea princ\u00edpov Sternovej \u0161trukt\u00fary dvojitej elektrickej vrstvy (Greenwood 2003). Pod\u013ea tohto princ\u00edpu vy\u0161\u0161ie hodnoty nazna\u010duj\u00fa v\u00e4\u010d\u0161iu disperzn\u00fa \u00fa\u010dinnos\u0165.<\/p>\n
Whiskery karbidu krem\u00edka m\u00f4\u017eu by\u0165 \u00fa\u010dinn\u00fdm n\u00e1strojom na spevnenie kompozitn\u00fdch materi\u00e1lov na b\u00e1ze polym\u00e9rov. Tieto vl\u00e1knit\u00e9 \u010dastice maj\u00fa mnoho priemyseln\u00fdch vyu\u017eit\u00ed a maj\u00fa dve kry\u0161t\u00e1lov\u00e9 formy - a-SiC (hexagon\u00e1lna a koso\u0161tvorcov\u00e1 \u0161trukt\u00fara) a b-SiC (\u010delne centrovan\u00e1 kubick\u00e1 \u0161trukt\u00fara). Dosiahnute\u013enos\u0165 whiskerov A-SiC je jednoduch\u00e1, ale obmedzen\u00e1 kv\u00f4li krehkosti; v porovnan\u00ed s touto formou si whiskery b-SiC vy\u017eaduj\u00fa zlo\u017eit\u00fd chemick\u00fd proces, ako aj drah\u0161ie zariadenie na synt\u00e9zu, pri\u010dom sa m\u00f4\u017eu pochv\u00e1li\u0165 vy\u0161\u0161ou lomovou h\u00fa\u017eevnatos\u0165ou v porovnan\u00ed so svojimi n\u00e1protivkami.<\/p>\n
V\u00fdskumn\u00edci pracuj\u00faci na v\u00fdvoji vysoko v\u00fdkonn\u00fdch kompozitov na b\u00e1ze polym\u00e9rov sa zamerali na plniv\u00e1, ktor\u00e9 zvy\u0161uj\u00fa odolnos\u0165 polym\u00e9rov proti oderu v r\u00e1mci \u0161ir\u0161ieho \u00fasilia o zv\u00fd\u0161enie mechanick\u00fdch vlastnost\u00ed pri s\u00fa\u010dasnom zn\u00ed\u017een\u00ed n\u00e1kladov; polym\u00e9rne materi\u00e1ly maj\u00fa zvy\u010dajne ni\u017e\u0161iu pevnos\u0165 v \u0165ahu a r\u00e1ze v porovnan\u00ed s kovov\u00fdmi alebo keramick\u00fdmi n\u00e1protivkami, ale ich v\u00fdroba je ove\u013ea lacnej\u0161ia.<\/p>\n
Plniv\u00e1 pou\u017e\u00edvan\u00e9 na modifik\u00e1ciu PA6 preuk\u00e1zali obmedzen\u00fa odolnos\u0165 vo\u010di oderu. Nylonov\u00e9 kompozity obsahuj\u00face sklenen\u00e9 vl\u00e1kna vykazovali hor\u0161ie v\u00fdsledky, zatia\u013e \u010do kompozity obsahuj\u00face anorganick\u00e9 \u017eiaruvzdorn\u00e9 materi\u00e1ly, ako napr\u00edklad disulfid molybd\u00e9nu, mali slab\u0161iu pevnos\u0165 v \u0165ahu ako ostatn\u00e9.<\/p>\n
V tejto \u0161t\u00fadii sa pou\u017eili kompozity na b\u00e1ze PA6 obsahuj\u00face r\u00f4zne koncentr\u00e1cie whiskerov b-SiC. Ich pr\u00eddavok v\u00fdrazne zlep\u0161il pevnos\u0165 v ohybe, pr\u00e1cu pri lome a medzivrstvov\u00fa pevnos\u0165 v \u0161myku; ich pr\u00eddavok tie\u017e prispel k zv\u00fd\u0161eniu h\u00fa\u017eevnatosti v d\u00f4sledku premos\u0165ovania whiskerov; tento proces pren\u00e1\u0161a nap\u00e4tie z m\u00e4kk\u00fdch polym\u00e9rov, ako je PA6, na tvrd\u0161ie whiskery SiC, ktor\u00e9 potom pren\u00e1\u0161aj\u00fa nap\u00e4tie od nich a namiesto toho k nim.<\/p>\n
Na sk\u00famanie morfol\u00f3gie a mikro\u0161trukt\u00fary b-SiC metli\u010diek sa pou\u017eila elektr\u00f3nov\u00e1 mikroskopia. V porovnan\u00ed so svojimi n\u00e1protivkami z a-SiC sa b-SiC whiskery vyzna\u010dovali oblas\u0165ami s n\u00edzkou hustotou defektov, ako aj oblas\u0165ami s n\u00edzkou plo\u0161nou hustotou defektov; okrem toho vykazovali v\u00e4\u010d\u0161iu ve\u013ekos\u0165 kry\u0161t\u00e1lov\u00fdch z\u0155n v porovnan\u00ed so svojimi n\u00e1protivkami z a-SiC.<\/p>\n
Whiskery z b-SiC boli \u00faspe\u0161ne dispergovan\u00e9 do kompozitov na b\u00e1ze PA6 s pou\u017eit\u00edm vhodnej hodnoty pH, \u010d\u00edm sa v\u00fdrazne zv\u00fd\u0161ila pevnos\u0165 v ohybe, pevnos\u0165 v \u0165ahu, lomov\u00e1 pr\u00e1ca, h\u00fa\u017eevnatos\u0165 a h\u00fa\u017eevnatos\u0165 t\u00fdchto kompozitov. Procesy premos\u0165ovania a vy\u0165ahovania zohr\u00e1vali v\u00fdznamn\u00fa \u00falohu pri zlep\u0161ovan\u00ed h\u00fa\u017eevnatosti pri s\u00fa\u010dasnom zvy\u0161ovan\u00ed pevnosti v ohybe, preto\u017ee si vy\u017eadovali v\u00e4\u010d\u0161iu energiu na poru\u0161enie ako met\u00f3dy bez premos\u0165ovania.<\/p>\n
Whiskery karbidu krem\u00edka sa m\u00f4\u017eu pou\u017ei\u0165 na spevnenie a h\u00fa\u017eevnatos\u0165 keramiky, kovov a polym\u00e9rnych kompozitov. Ich vlastnosti siahaj\u00fa od vysokej pevnosti, tvrdosti, h\u00fa\u017eevnatosti a\u017e po vynikaj\u00facu chemick\u00fa inertnos\u0165 a odolnos\u0165 vo\u010di kor\u00f3zii - ako aj n\u00edzku elektrick\u00fa vodivos\u0165 - \u010do ich predur\u010duje na pou\u017eitie v celom rade keramick\u00fdch, kovov\u00fdch a polym\u00e9rnych materi\u00e1lov. Ur\u010dite n\u00e1jdete tak\u00fa ve\u013ekos\u0165, ktor\u00e1 dokonale vyhovuje va\u0161im \u0161pecifick\u00fdm potreb\u00e1m!<\/p>\n
Tieto materi\u00e1ly s\u00fa obzvl\u00e1\u0161\u0165 vhodn\u00e9 pre aplik\u00e1cie, ktor\u00e9 si vy\u017eaduj\u00fa r\u00fdchly v\u00fdkon, ako je napr\u00edklad leteck\u00e1 technika a rezn\u00e9 n\u00e1stroje. V\u010faka svojej odolnosti s\u00fa vhodn\u00e9 na br\u00fasenie, le\u0161tenie alebo strojov\u00e9 rezanie a dokonca sa daj\u00fa kombinova\u0165 s in\u00fdmi materi\u00e1lmi na zv\u00fd\u0161enie v\u00fdkonu - napr\u00edklad v spojen\u00ed s karbonitridom tit\u00e1nu (TiCxNy) na zv\u00fd\u0161enie tvrdosti a chemickej inertnosti keramick\u00fdch kompozitov.<\/p>\n
Ako tak\u00e9 sa daj\u00fa vyu\u017ei\u0165 v leteckom a kozmickom in\u017einierstve na navrhovanie \u013eah\u0161\u00edch a \u00faspornej\u0161\u00edch lietadiel, pevnej\u0161\u00edch kompozitn\u00fdch materi\u00e1lov, ktor\u00e9 odol\u00e1vaj\u00fa vy\u0161\u0161\u00edm \u00farovniam nam\u00e1hania, ako aj rezn\u00fdch n\u00e1strojov s po\u017eadovanou \u00farov\u0148ou presnosti, ako s\u00fa v\u0155ta\u010dky alebo br\u00fasky.<\/p>\n
Keramick\u00e9 kompozity vystu\u017een\u00e9 hrub\u00fdmi metli\u010dkami karbidu krem\u00edka preuk\u00e1zali zlep\u0161en\u00fa h\u00fa\u017eevnatos\u0165 po\u010das sk\u00fa\u0161ky v \u0165ahu. Zapletenie metli\u010diek v\u00fdrazne zv\u00fd\u0161ilo spotrebu energie pri poruche - ukazovate\u013e h\u00fa\u017eevnatosti. Okrem toho za\u010dlenenie whiskerov zlep\u0161ilo ich c-moment diskontinuity - z\u00e1kladn\u00fa charakteristiku keramiky.<\/p>\n
Hrub\u00e9 metli\u010dky karbidu krem\u00edka m\u00f4\u017eu by\u0165 \u00fa\u010dinn\u00fdm doplnkom kompozitov s keramickou matricou, ale ich morfol\u00f3gia m\u00f4\u017ee negat\u00edvne ovplyvni\u0165 ich h\u00fa\u017eevnatos\u0165. Preto si ich za\u010dlenenie vy\u017eaduje proces, ktor\u00fd zni\u017euje ich ve\u013ekos\u0165, ako aj obsah vo\u013en\u00e9ho oxidu kremi\u010dit\u00e9ho, aby sa \u00faspe\u0161ne za\u010dlenili do keramick\u00fdch matr\u00edc.<\/p>\n
Jedn\u00fdm zo sp\u00f4sobov dosiahnutia tohto cie\u013ea je n\u00edzkoenergetick\u00e9 gu\u013e\u00f4\u010dkov\u00e9 mletie. T\u00e1to technika zni\u017euje ve\u013ekos\u0165 whiskerov a z\u00e1rove\u0148 zvy\u0161uje povrch. Okrem toho je mo\u017en\u00e9 pri v\u00fdrobe kompozitn\u00e9ho materi\u00e1lu zahrn\u00fa\u0165 vy\u0161\u0161ie objemov\u00e9 percento whiskerov pre lep\u0161iu lomov\u00fa h\u00fa\u017eevnatos\u0165 ako pri v\u00fdrobe bez hrub\u00fdch whiskerov.<\/p>\n
Karbid krem\u00edka je mimoriadne odoln\u00fd materi\u00e1l pou\u017e\u00edvan\u00fd na spev\u0148ovanie keramiky, kovov a polym\u00e9rnych kompozitov. V\u010faka svojej vysokej pevnosti, tvrdosti, chemickej inertnosti a odolnosti vo\u010di teplot\u00e1m sl\u00fa\u017ei karbid krem\u00edka ako vynikaj\u00faci v\u00fdstu\u017en\u00fd materi\u00e1l v mnoh\u00fdch r\u00f4znych aplik\u00e1ci\u00e1ch; aplik\u00e1cie na spev\u0148ovanie keramiky maj\u00fa \u010dasto ve\u013ek\u00fd \u00fa\u017eitok, preto\u017ee v d\u00f4sledku pou\u017eitia tohto v\u00fdstu\u017en\u00e9ho materi\u00e1lu sa zvy\u0161uje ich odolnos\u0165 vo\u010di oxid\u00e1cii, odolnos\u0165 vo\u010di opotrebovaniu a tepeln\u00e1 stabilita.<\/p>\n
Vi\u0161ti\u010dky karbidu krem\u00edka s\u00fa ide\u00e1lnym sp\u00f4sobom na zv\u00fd\u0161enie pevnosti kompozitov na b\u00e1ze polym\u00e9rov s vysokou tuhos\u0165ou a modulom pru\u017enosti v \u0165ahu, najm\u00e4 t\u00fdch, ktor\u00e9 sa vyzna\u010duj\u00fa zv\u00fd\u0161enou tuhos\u0165ou alebo pomerom tuhosti a modulu pru\u017enosti v \u0165ahu. Okrem toho zvy\u0161uj\u00fa hodnoty pred\u013a\u017eenia v \u0165ahu pri pretrhnut\u00ed a lomovej h\u00fa\u017eevnatosti t\u00fdchto kompozitov a z\u00e1rove\u0148 pom\u00e1haj\u00fa zni\u017eova\u0165 koeficienty trenia; v\u010faka tomu s\u00fa neocenite\u013en\u00fdm v\u00fdstu\u017en\u00fdm materi\u00e1lom vo vysokor\u00fdchlostn\u00fdch aplik\u00e1ci\u00e1ch, ako s\u00fa napr\u00edklad leteck\u00e9 alebo automobilov\u00e9 komponenty.<\/p>\n
Vl\u00e1kna karbidu krem\u00edka s\u00fa dlh\u00e9, tenk\u00e9 vl\u00e1kna s priemerom od nanometrov po mikrometre, ktor\u00e9 sa vyzna\u010duj\u00fa monokry\u0161talickou \u0161trukt\u00farou s mal\u00fdm mno\u017estvom chemick\u00fdch pr\u00edmes\u00ed a bez hran\u00edc z\u0155n, vysokou teplotou topenia, n\u00edzkou hustotou a vynikaj\u00facou odolnos\u0165ou proti kor\u00f3zii a \u00fanave. Na zv\u00fd\u0161enie v\u00fdkonnosti sa m\u00f4\u017ee pou\u017ei\u0165 zosilnenie in\u00fdmi materi\u00e1lmi; v\u010faka svojim vynikaj\u00facim mechanick\u00fdm vlastnostiam je v\u00fdborn\u00fdm zosil\u0148uj\u00facim a spev\u0148uj\u00facim \u010dinidlom pre pokro\u010dil\u00fa kon\u0161truk\u010dn\u00fa keramiku, ako s\u00fa napr\u00edklad rezn\u00e9 n\u00e1stroje z keramiky oxidu hlinit\u00e9ho.<\/p>\n
Pridanie SiC whiskerov do oxidu hlinit\u00e9ho zvy\u0161uje jeho pevnos\u0165 v \u0165ahu a v ohybe, pri\u010dom nem\u00e1 v\u00fdrazn\u00fd vplyv na vysokoteplotn\u00e9 te\u010denie. Okrem toho pridanie t\u00fdchto whiskerov zv\u00fd\u0161ilo pevnos\u0165 v ohybe pri izbovej teplote trojn\u00e1sobne v porovnan\u00ed s pevnos\u0165ou pred ich pridan\u00edm.<\/p>\n
Pod\u013ea Shi et al. prid\u00e1vaj\u00fa whiskery SiC kompozitom s matricou oxidu hlinit\u00e9ho v\u00fdznamn\u00e9 mechanick\u00e9 v\u00fdhody. Inkorpor\u00e1cia whiskerov zv\u00fd\u0161ila ich pevnos\u0165 v \u0165ahu o 37,6% a pevnos\u0165 v ohybe o 37,9%.<\/p>\n
Pre ka\u017ed\u00fa aplik\u00e1ciu je v\u0161ak nevyhnutn\u00e9 zvoli\u0165 primeran\u00fd po\u010det whiskerov, preto\u017ee pr\u00edli\u0161 ve\u013ea whiskerov zni\u017euje pevnos\u0165 kompozitn\u00e9ho materi\u00e1lu v \u0165ahu a ohybe a potenci\u00e1lne vedie ku koncentr\u00e1cii nap\u00e4tia, ktor\u00e1 vedie k \u0161\u00edreniu trhl\u00edn.<\/p>\n
Karbid krem\u00edka (SiC) je pevn\u00e1 chemick\u00e1 zl\u00fa\u010denina krem\u00edka a uhl\u00edka, ktor\u00e1 sa v pr\u00edrode vyskytuje ako drahokam moissanit; pri ve\u013ekov\u00fdrobe vo forme pr\u00e1\u0161ku a kry\u0161t\u00e1lov na priemyseln\u00e9 \u00fa\u010dely sa v\u0161ak vytv\u00e1ra aj ve\u013ek\u00e9 mno\u017estvo SiC na v\u00fdrobu br\u00fasnych materi\u00e1lov, rezn\u00fdch n\u00e1strojov, keramick\u00fdch dosiek na nepriestreln\u00e9 vesty, ako aj ve\u013emi tvrdej keramiky pou\u017e\u00edvanej v automobilov\u00fdch brzd\u00e1ch a spojk\u00e1ch. Tvrd\u00fd, sivo\u010dierny materi\u00e1l SiC s vysok\u00fdm bodom topenia a varu m\u00e1 mnoho vyu\u017eit\u00ed vr\u00e1tane keramick\u00fdch dosiek na nepriestreln\u00e9 vesty ako brusiva; rezn\u00fdch n\u00e1strojov, ako aj pou\u017eitia ako keramick\u00e9 dosky na nepriestreln\u00e9 vesty vyroben\u00e9 zo SiC. Spekan\u00edm sa vytv\u00e1ra ve\u013emi tvrd\u00e1 keramika, ktor\u00e1 sa vo ve\u013ekej miere pou\u017e\u00edva v automobilov\u00fdch brzd\u00e1ch a spojk\u00e1ch vyroben\u00fdch zo SiC spojen\u00fdch lepen\u00edm, aby sa vytvorila keramika, ktor\u00e1 sa vo ve\u013ekej miere pou\u017e\u00edva v automobilov\u00fdch brzdov\u00fdch a spojkov\u00fdch syst\u00e9moch.<\/p>\n
Keramick\u00e1 matrica plnen\u00e1 metli\u010dkami karbidu krem\u00edka je \u013eahk\u00e1 a m\u00e1 vynikaj\u00facu pevnos\u0165 v \u0165ahu, v\u010faka \u010domu je vhodn\u00e1 na aplik\u00e1cie vy\u017eaduj\u00face vysok\u00e9 r\u00fdchlosti, ako je v\u00fdroba dosiek nepriestreln\u00fdch viest. Hlin\u00edkov\u00e1 keramika ju m\u00f4\u017ee vyu\u017e\u00edva\u0165 na zabr\u00e1nenie vzniku trhl\u00edn po\u010das obr\u00e1bania, zatia\u013e \u010do sklo ju m\u00f4\u017ee vyu\u017e\u00edva\u0165 na posilnenie tepelnej stability alebo sa dokonca m\u00f4\u017ee prid\u00e1va\u0165 do kompozitn\u00fdch kovovo-keramick\u00fdch zl\u00fa\u010den\u00edn na zv\u00fd\u0161enie teplotnej stability.<\/p>\n
Na dosiahnutie t\u00fdchto vlastnost\u00ed je nevyhnutn\u00e9, aby sa whiskery vhodne spracov\u00e1vali a zaobch\u00e1dzalo sa s nimi, vr\u00e1tane zabr\u00e1nenia kontamin\u00e1cii a opatrn\u00e9ho zaobch\u00e1dzania. V ide\u00e1lnom pr\u00edpade by sa mali skladova\u0165 vo vzduchotesnej n\u00e1dobe, aby sa zn\u00ed\u017eilo vystavenie vzduchu; inak vzduch sp\u00f4sob\u00ed ich aglomer\u00e1ciu, \u010do bude ma\u0165 nepriazniv\u00fd vplyv na ich disperzn\u00e9 vlastnosti a \u00fa\u010dinok pri pou\u017eit\u00ed. Na dosiahnutie optim\u00e1lnych podmienok skladovania sa tie\u017e odpor\u00fa\u010da uchov\u00e1va\u0165 ho mimo dosahu slne\u010dn\u00e9ho svetla.<\/p>\n
Synt\u00e9za metli\u010diek karbidu krem\u00edka si vy\u017eaduje viacero krokov a zah\u0155\u0148a starostliv\u00fd v\u00fdber obetovanej \u0161abl\u00f3ny a reak\u010dn\u00fdch podmienok. R\u00f4zne teploty a trvanie po\u010das karbotermick\u00fdch reduk\u010dn\u00fdch procesov m\u00f4\u017eu zmeni\u0165 ich morfol\u00f3giu a \u0161trukt\u00faru alebo sa m\u00f4\u017eu prisp\u00f4sobi\u0165 na dosiahnutie v\u00fdsledku \u0161pecifick\u00e9ho pre pomer str\u00e1n.<\/p>\n
Mezop\u00f3rovit\u00fd oxid kremi\u010dit\u00fd mo\u017eno pou\u017ei\u0165 aj ako \u0161abl\u00f3nu na tvorbu karbidov\u00fdch metli\u010diek krem\u00edka prostredn\u00edctvom karbotermickej redukcie pri vy\u0161\u0161\u00edch teplot\u00e1ch (1300 stup\u0148ov C) po\u010das dlh\u0161ieho obdobia. V\u00fdsledkom je rovnomernej\u0161ia morfol\u00f3gia a pomer str\u00e1n.<\/p>\n
Patentovan\u00e1 technol\u00f3gia poskytuje sp\u00f4sob v\u00fdroby metli\u010diek karbidu krem\u00edka s kontrolovan\u00fdm pomerom str\u00e1n a obsahom gran\u00fal, pri\u010dom sa vyr\u00e1baj\u00fa metli\u010dky s priemern\u00fdm priemerom 0,2 a\u017e 1,0 mm, pomerom str\u00e1n 20 a\u017e 200 a obsahom gran\u00fal pod 7%. Okrem toho tieto whiskery obsahuj\u00fa n\u00edzke percento in\u00fdch \u0165a\u017ek\u00fdch kovov, ako je nikel (50 ppm). Tento proces pon\u00faka ekonomick\u00fa, bezpe\u010dn\u00fa a ekologick\u00fa alternat\u00edvu k tradi\u010dn\u00fdm keramick\u00fdm materi\u00e1lom.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon carbide whiskers are commonly used to strengthen and toughen metal, ceramic, and polymer composites, providing increased fracture toughness, flexural strength, oxidation resistance, and fracture toughness properties of their composites. Dispersions of SiCw were assessed using a Malvern Nano ZS90 to analyze their surface Zeta potential, according to Stern double electric layer structure principles (Greenwood […]<\/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":[64],"tags":[],"class_list":["post-444","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts\/444","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/comments?post=444"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts\/444\/revisions"}],"predecessor-version":[{"id":445,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts\/444\/revisions\/445"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/media?parent=444"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/categories?post=444"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/tags?post=444"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}