{"id":75,"date":"2024-05-26T12:18:01","date_gmt":"2024-05-26T04:18:01","guid":{"rendered":"https:\/\/aluminaceramics.net\/?p=75"},"modified":"2024-07-15T20:24:18","modified_gmt":"2024-07-15T12:24:18","slug":"aluminija-oksida-stikls","status":"publish","type":"post","link":"https:\/\/aluminaceramics.net\/lv\/alumina-glass\/","title":{"rendered":"Alum\u012bnija oks\u012bda stikls"},"content":{"rendered":"<p>Stikla smiltis, ko izmanto augsta alum\u012bnija satura stiklu ra\u017eo\u0161an\u0101, parasti satur nelielu magnija oks\u012bda daudzumu. \u0160\u012bs miner\u0101l\u0101s smiltis var b\u016bt ieg\u016btas gan no ie\u017eu nogulumu atradn\u0113m, gan no neapstr\u0101d\u0101tiem dabas avotiem, un t\u0101m j\u0101paliek nemain\u012bg\u0101m vis\u0101 ra\u017eo\u0161anas proces\u0101.<\/p>\n<p>Za\u013c\u0101 stikla parauga JXL09 SEM-EDS anal\u012bze atkl\u0101ja sarkanus iesl\u0113gumus, kuros bija bar\u012bta krist\u0101li, k\u0101 ar\u012b paaugstin\u0101tu Cu, Fe un S saturu, kas liecina par to, ka paraugs satur sulf\u012bdus saturo\u0161as vara un dzelzs izejvielas.<\/p>\n<h2>Raksturlielumi<\/h2>\n<p>Alum\u012bnija oks\u012bda stikls ir stikls, kura sast\u0101v\u0101 ir alum\u012bnija oks\u012bds, un tam piem\u012bt daudzas unik\u0101las \u012bpa\u0161\u012bbas, kas to padara \u013coti v\u0113rt\u012bgu lietojumos, kuros nepiecie\u0161ama iztur\u012bba, \u0137\u012bmisk\u0101 un termisk\u0101 iztur\u012bba, optisk\u0101 caursp\u012bd\u012bba un zema elektrovad\u012btsp\u0113ja. Alum\u012bnija oks\u012bda stiklu pla\u0161i izmanto lidma\u0161\u012bnu un automobi\u013cu logos, k\u0101 ar\u012b nakts redzam\u012bbas ier\u012bc\u0113s un siltuma mekl\u0113jo\u0161o ra\u0137e\u0161u priek\u0161galos. Turkl\u0101t alum\u012bnija oks\u012bda stiklam piem\u012bt zema elektrovad\u012btsp\u0113ja, zems izple\u0161an\u0101s koeficients un augsta ciet\u012bba (augst\u0101kais r\u0101d\u012bt\u0101js p\u0113c Mosa skalas).<\/p>\n<p>Arheolo\u0123iskajos izrakumos vis\u0101 Dienvid\u0101zij\u0101 ir atrasti daudzi stikla paraugi, kas izgatavoti no alum\u012bnija oks\u012bda bag\u0101tiem sast\u0101viem. Sast\u0101va anal\u012bze liecina, ka \u0161ie stikli tika ra\u017eoti p\u0113c recept\u0113m, kur\u0101m \u0161aj\u0101 re\u0123ion\u0101 ir sena v\u0113sture; tom\u0113r joproj\u0101m nav zin\u0101ms, vai \u0161\u012bs konkr\u0113t\u0101s receptes ir c\u0113lu\u0161\u0101s tie\u0161i \u0161eit vai ar\u012b t\u0101s tika p\u0101r\u0146emtas no citurienes k\u0101 da\u013ca no pla\u0161\u0101kas receptu grupas.<\/p>\n<p>Alum\u012bnija oks\u012bds uzlabo n\u0101trija-kalcija-sil\u012bcija stikla stiklo\u0161an\u0101s temperat\u016bru, bl\u012bvumu un \u0137\u012bmisko iztur\u012bbu, palielinot t\u0101 stiklo\u0161an\u0101s temperat\u016bru, bl\u012bvumu un \u0137\u012bmisko iztur\u012bbu. Alum\u012bnija oks\u012bds ar\u012b samazina bora izrais\u012bto zilo apdu\u013c\u0137o\u0161anos, vienlaikus apturot t\u0101 oksid\u0113\u0161anos, ko izraisa sil\u012bcija oks\u012bda da\u013ci\u0146as. Alum\u012bnija oks\u012bda stiklam ir daudzas priek\u0161roc\u012bbas sal\u012bdzin\u0101jum\u0101 ar tradicion\u0101lajiem izol\u0101cijas un dekorat\u012bvajiem stikliem, piem\u0113ram, paaugstin\u0101ta iztur\u012bba, augst\u0101kas ku\u0161anas temperat\u016bras, zem\u0101ka elektrovad\u012btsp\u0113ja, zem\u0101ks izple\u0161an\u0101s koeficients un izcilas korozijas iztur\u012bbas \u012bpa\u0161\u012bbas.<\/p>\n<p>Alum\u012bnija oks\u012bda stikla mikrostrukt\u016bra main\u0101s atkar\u012bb\u0101 no t\u0101 kalcin\u0113\u0161anas pak\u0101pes. Nekalcin\u0113ti paraugi uzr\u0101da krist\u0101lu t\u012bklu un da\u017eas tuk\u0161uma vietas; kad tos uzkars\u0113 l\u012bdz temperat\u016br\u0101m, kas izraisa virsmas kristaliz\u0101cijas palielin\u0101\u0161anos vair\u0101k nek\u0101 parastajam stiklam; piem\u0113ram, paraug\u0101 GS028 blakus n\u0101trija alum\u012bnijsilik\u0101ta un sodal\u012bta da\u013ci\u0146\u0101m var redz\u0113t sakopotus svina-alvas oks\u012bda klasterus; citos paraugos, kuros ir papildu alum\u012bnija oks\u012bdu saturo\u0161as da\u013ci\u0146as, virsmas kristaliz\u0101cija strauji palielin\u0101s, savuk\u0101rt krist\u0101liem kopum\u0101 ir maz\u0101ki izm\u0113ri nek\u0101 parastajiem stikla paraugiem.<\/p>\n<p>Alum\u012bnija oks\u012bdu saturo\u0161\u0101 stikl\u0101 atrastie vara sulf\u012bda un neatt\u012br\u012bta vara oks\u012bda iesl\u0113gumi ir patiesi nosl\u0113pumaini, liecinot, ka tie, iesp\u0113jams, tur non\u0101ca, kop\u012bgi kaus\u0113jot oks\u012bda un sulf\u012bda veida varu, lai gan, visticam\u0101k, amatniekiem b\u016btu bijis j\u0101velta ilgs un nogurdino\u0161s darbs, lai no tiem not\u012br\u012btu mat\u0113tas granulas, pirms iesl\u0113gumi var\u0113tu iek\u013c\u016bt stikl\u0101.<\/p>\n<h2>\u012apa\u0161\u012bbas<\/h2>\n<p>Alum\u012bnija oks\u012bdam (g-Al\u2082O\u2083), kas atrodams alum\u012bnija oks\u012bda stikl\u0101, piem\u012bt daudzas unik\u0101las un izdev\u012bgas \u012bpa\u0161\u012bbas, tostarp augsta ku\u0161anas temperat\u016bra un termisk\u0101 stabilit\u0101te, kas padara to piem\u0113rotu izmanto\u0161anai keramiskajos ugunsiztur\u012bgajos materi\u0101los, pul\u0113\u0161anas materi\u0101los un abraz\u012bvajos l\u012bdzek\u013cos. Turkl\u0101t \u0161\u012b komponenta r\u016bpnieciskie pielietojumi ietver izmanto\u0161anu k\u0101 ugunsdro\u0161\u012bbas un d\u016bmu sl\u0101p\u0113\u0161anas l\u012bdzek\u013cos, k\u0101 ar\u012b k\u0101 b\u016btisku izejvielu gan alum\u012bnija oks\u012bda, gan daudzu speci\u0101lo sakaus\u0113jumu ra\u017eo\u0161an\u0101.<\/p>\n<p>Ar alum\u012bnija oks\u012bda stiklu pies\u0101tin\u0101tas VC keramikas mikrostrukt\u016bra paraugos iev\u0113rojami at\u0161\u0137iras. Kopum\u0101 t\u0101 parasti ir granul\u0101ra, taj\u0101 sastopami s\u012bki alum\u012bnija oks\u012bda krist\u0101li un feldsp\u0101ta graudi. Tom\u0113r paraugos GS028 un GS022 ir liel\u0101ki krist\u0101li, kuriem ir vien\u0101da forma, un da\u017eos paraugos pat nov\u0113rojamas paz\u012bmes, kas liecina par alvas kalksa nepiln\u012bgu sadal\u012b\u0161anos kubveida alvas oks\u012bda krist\u0101los, kas veidoju\u0161ies k\u0101 adatuveida svina-alvas oks\u012bda krist\u0101li. \u0160ie graudi ir ietverti m\u012bkst\u0101, balt\u0101 silik\u0101tu matric\u0101, kas sast\u0101v no n\u0101trija alum\u012bnijsilik\u0101ta.<\/p>\n<p>\u0160aj\u0101 matric\u0101 nov\u0113rots zems magnija saturs (1,5 p\u0113c svara), kas liecina, ka stikla ra\u017eo\u0161anai izmantotais smilts tika ieg\u016bts no miner\u0101liem, piem\u0113ram, kvarca vai plagiokl\u0101za \u2014 feldsp\u0101ta gal\u0113jiem komponentiem, k\u0101 ar\u012b no alum\u012bnija oks\u012bda; \u0160o hipot\u0113zi apstiprina gan lielais s\u0101rmaino feldsp\u0101tu \u012bpatsvars paraugos, gan ar\u012b da\u017e\u0101ds plagiokl\u0101za un kvarca saturs.<\/p>\n<p>Eksperimenti, kas veikti, izmantojot XRD un neitronu difrakciju, liecina, ka g-Al\u2082O\u2083 piem\u012bt krist\u0101liska strukt\u016bra ar augstu ku\u0161anas temperat\u016bru un termisko stabilit\u0101ti, k\u0101 ar\u012b neparasti asu p\u012b\u0137i pie 1,52 A\u207b\u00b9, kas atbilst pseidobraga plakn\u0113m, kas veidojas gar tuk\u0161umu; tas iev\u0113rojami at\u0161\u0137iras no parastajiem stikla veidojo\u0161ajiem oks\u012bdiem, jo liecina, ka \u0161\u012b recepte rada struktur\u0101li at\u0161\u0137ir\u012bgus stikla izstr\u0101d\u0101jumus.<\/p>\n<p>\u0160\u012b p\u0113t\u012bjuma rezult\u0101ti liecina, ka ar stiklu pies\u0101tin\u0101ta alum\u012bnija oks\u012bda keramika tika ra\u017eota, izmantojot novatorisku un v\u0113sturiski noz\u012bm\u012bgu recepti, kas b\u016btiski at\u0161\u0137\u012br\u0101s no tradicion\u0101laj\u0101m arheolo\u0123iskaj\u0101m stikla recept\u0113m, jo taj\u0101 bija veikti piel\u0101gojumi, lai samazin\u0101tu stikla apdu\u013c\u0137o\u0161anos, kas saist\u012bta ar augstu alum\u012bnija oks\u012bda saturu.<\/p>\n<h2>Pieteikumi<\/h2>\n<p>Alum\u012bnija oks\u012bds ir galven\u0101 sast\u0101vda\u013ca bru\u0146u stikla izstr\u0101d\u0101jumos, pateicoties t\u0101 izcilajai spiediena iztur\u012bbai un ciet\u012bbai, kas to padara par neaizst\u0101jamu materi\u0101lu tehniskaj\u0101 vai augsto tehnolo\u0123iju keramik\u0101, kas paredz\u0113ta ekstr\u0113miem apst\u0101k\u013ciem, kuriem rakstur\u012bgas augstas pras\u012bbas gan attiec\u012bb\u0101 uz termisko stabilit\u0101ti, gan uz paaugstin\u0101tu nodilumiztur\u012bbu. Alum\u012bnija oks\u012bda pulveri var ar\u012b sajaukt ar citiem materi\u0101liem, lai ra\u017eotu unik\u0101lus stikla vai keramikas izstr\u0101d\u0101jumus da\u017e\u0101d\u0101s kr\u0101s\u0101s, form\u0101s un izm\u0113ros, k\u0101 ar\u012b pievienot da\u017e\u0101dos stikla ra\u017eo\u0161anas procesos, piem\u0113ram, alum\u012bnijsilik\u0101ta stikla ra\u017eo\u0161anas procesos, kas ir paz\u012bstami ar savu \u0101rk\u0101rt\u0113jo \u0137\u012bmisko un termisko iztur\u012bbu.<\/p>\n<p>Alum\u012bnija oks\u012bds tiek izmantots daudz\u0101s r\u016bpniecisk\u0101s jom\u0101s \u2014 s\u0101kot no ugunsiztur\u012bgiem materi\u0101liem un keramikas l\u012bdz pul\u0113\u0161anas un abraz\u012bvajiem izstr\u0101d\u0101jumiem. Alum\u012bnija oks\u012bds ir ar\u012b svar\u012bga sast\u0101vda\u013ca ugunsdro\u0161\u012bbas l\u012bdzek\u013cos un d\u016bmu sl\u0101p\u0113t\u0101jos, k\u0101 ar\u012b medic\u012bniskaj\u0101s ier\u012bc\u0113s, automobi\u013cu un kosmosa nozar\u0113. Turkl\u0101t, pateicoties t\u0101 iztur\u012bbai un korozijas iztur\u012bbai, to bie\u017ei kombin\u0113 ar t\u0101diem materi\u0101liem k\u0101 sil\u012bcija dioks\u012bds vai ka\u013c\u0137is, lai noteiktos pielietojumos pan\u0101ktu optim\u0101las \u012bpa\u0161\u012bbas.<\/p>\n<p>P\u0113tnieki veic p\u0113t\u012bjumus, lai uzlabotu alum\u012bnija oks\u012bda plastiskumu, radot to t\u0101 s\u0101kotn\u0113j\u0101, amorf\u0101 st\u0101vokl\u012b, nevis krist\u0101lisk\u0101 form\u0101. Vi\u0146u p\u0113t\u012bjumi atkl\u0101ja, ka \u0161is st\u0101voklis \u013cauj materi\u0101lam deform\u0113ties istabas temperat\u016br\u0101, at\u0161\u0137ir\u012bb\u0101 no vienkomponentu oks\u012bda stikliem, kuriem \u0161\u012b \u012bpa\u0161\u012bba nav rakstur\u012bga. P\u0113t\u012bjumi liecina, ka \u0161\u012bs formas izgatavo\u0161anai var izmantot impulsu l\u0101zera nogulsn\u0113\u0161anu, kuras laik\u0101 tiek veidota amorfa pl\u0113ve, kas p\u0113c izveides tiek strauji atdzes\u0113ta.<\/p>\n<p>\u0100tra atdzi\u0161ana \u013cauj molekul\u0101raj\u0101m saikn\u0113m atsl\u0101bin\u0101ties un p\u0101rveidoties, kad t\u0101s tiek izstieptas, t\u0101d\u0113j\u0101di izklied\u0113jot meh\u0101niskos spriegumus, nevis koncentr\u0113jot tos atsevi\u0161\u0137\u0101s viet\u0101s, un nov\u0113r\u0161ot asu plaisu veido\u0161anos. \u0160\u0101da veida plastiskums vair\u0101k atg\u0101dina keramikas \u012bpa\u0161\u012bbas nek\u0101 tipiskiem stikla izstr\u0101d\u0101jumiem.<\/p>\n<p>Viens no veidiem, k\u0101 palielin\u0101t alum\u012bnija oks\u012bda plastiskumu, ir pievienot stikla matricai citus miner\u0101lus. Piem\u0113ram, alum\u012bnijsilik\u0101ta stikl\u0101 tiek apvienots 57\u201360% sil\u012bcija dioks\u012bds (SiO\u2082) ar 16\u201320% alum\u012bnija oks\u012bdu (Al\u2082O\u2083), 5\u20137% kalcija oks\u012bdu (CaO), 6\u201312% magnija oks\u012bdu (MgO) un bora trioks\u012bdu (B\u2082O\u2083); \u0161is stikla veids ir paz\u012bstams ar savu iztur\u012bbu pret skr\u0101p\u0113jumiem mobilaj\u0101s ier\u012bc\u0113s.<\/p>\n<p>Lai ra\u017eotu alum\u012bnija oks\u012bda stiklu, alum\u012bnija oks\u012bda pulverim vispirms j\u0101veic izsmidzin\u0101\u0161anas granul\u0113\u0161ana ar polivinilspirta saistvielu, lai izveidotu viegli form\u0113jamu neapdedzin\u0101tu masu. P\u0113c form\u0113\u0161anas \u0161\u012bs granulas var t\u0101l\u0101k apstr\u0101d\u0101t un veidot da\u017e\u0101dus stikla un keramikas izstr\u0101d\u0101jumus, izmantojot saus\u0101s pres\u0113\u0161anas, ekstr\u016bzijas, injekcijas lie\u0161anas vai karst\u0101s izost\u0101tisk\u0101s pres\u0113\u0161anas metodes.<\/p>\n<h2>Ra\u017eo\u0161ana<\/h2>\n<p>K\u0101 liecina nosaukums, alum\u012bnija oks\u012bda stikla ra\u017eo\u0161ana s\u0101kas ar alum\u012bnija oks\u012bdu (Al\u2082O\u2083) jeb, k\u0101 to bie\u017e\u0101k sauc, \u201caluminu\u201d. Alum\u012bnija met\u0101la ra\u017eot\u0101ji ieg\u016bst \u0161o miner\u0101lu no zemes, pirms to p\u0101rstr\u0101d\u0101 baltaj\u0101 pulver\u012b, ko izmanto stikla ra\u017eo\u0161an\u0101. Ta\u010du at\u0161\u0137ir\u012bb\u0101 no stikliem uz sil\u012bcija b\u0101zes, piem\u0113ram, tiem, kas ra\u017eoti no sil\u012bcija pulveriem, alum\u012bnija oks\u012bdam nav plastiskuma \u012bpa\u0161\u012bbu, kas nepiecie\u0161amas noteiktiem pielietojumiem \u2013 p\u0113tnieki ir zi\u0146oju\u0161i, ka tas deform\u0113jas tikai specifiskos apst\u0101k\u013cos, piem\u0113ram, straujas atdzi\u0161anas gad\u012bjum\u0101 vai pak\u013cauts \u0101rk\u0101rt\u012bgi liel\u0101m slodz\u0113m.<\/p>\n<p>Erkka Frankbergs no Tamperes Tehnolo\u0123iju universit\u0101tes Somij\u0101 vad\u012bja komandu, kuras m\u0113r\u0137is bija p\u0101rvar\u0113t \u0161o \u0161\u0137\u0113rsli. Lai to pan\u0101ktu, vi\u0146i izmantoja pieeju, kas apvienoja atom\u0101ro model\u0113\u0161anu, eksperiment\u0101los m\u0113r\u012bjumus un molekul\u0101r\u0101s dinamikas simul\u0101cijas, lai izgatavotu mikroskopiskas alum\u012bnija oks\u012bda pl\u0113ves, kas \u013c\u0101va veikt neierobe\u017eotu plastisko deform\u0101ciju.<\/p>\n<p>Zin\u0101tnieki uz stikla lod\u012bt\u0113m uzsmidzin\u0101ja alum\u012bnija oks\u012bda pulveri, p\u0113c tam t\u0101s uzkars\u0113ja l\u012bdz temperat\u016brai, kas nedaudz p\u0101rsniedza to stikla p\u0101rejas temperat\u016bru, bet bija zem\u0101ka par kristaliz\u0101cijas punktu. Pirms veikt anal\u012bzes, piem\u0113ram, rentgena difrakciju un diferenci\u0101lo termisko anal\u012bzi, vi\u0146i \u013c\u0101va lod\u012bt\u0113m strauji atdzist. Eksperimentos tika konstat\u0113ts, ka alum\u012bnija oks\u012bda stikli pirms l\u016b\u0161anas var izstiepties l\u012bdz pat 8%, kas ir iev\u0113rojami vair\u0101k nek\u0101 sil\u012bcija tipisk\u0101 2\u20132% izstiep\u0161an\u0101s un 4\u201340% saspie\u0161an\u0101s pirms l\u016b\u0161anas.<\/p>\n<p>Frankberga komanda izp\u0113t\u012bja alum\u012bnija oks\u012bda stikla mikrostrukt\u016bru. Vi\u0146i nov\u0113roja, ka tam ir \u013coti t\u012brs, atom\u0101ri bl\u012bvs molekulu t\u012bkls, kas \u013c\u0101va viegli main\u012bt formu, kad uz to iedarboj\u0101s spriegums. Savuk\u0101rt kvarca stiklam atomu strukt\u016br\u0101 ir vair\u0101k spraugu, t\u0101d\u0113j\u0101di ierobe\u017eojot t\u0101 sp\u0113ju deform\u0113ties.<\/p>\n<p>Zin\u0101tnieki izstr\u0101d\u0101ja alum\u012bnija oks\u012bda stiklu, kur\u0101 iek\u013cauti reti sastopamie elementi \u2014 volframa un tantala oks\u012bdi, lai pan\u0101ktu t\u0101das unik\u0101las \u012bpa\u0161\u012bbas k\u0101 elektrovad\u012btsp\u0113ja un iztur\u012bba pret \u0137\u012bmisko iedarb\u012bbu, augsta iztur\u012bba un \u0101rk\u0101rt\u0113ja ciet\u012bba (9 p\u0113c Mosa skalas).<\/p>\n<p>P\u0113tniec\u012bbas komanda v\u0113l nav izstr\u0101d\u0101jusi efekt\u012bvu procesu komerci\u0101las kvalit\u0101tes alum\u012bnija oks\u012bda stikla ra\u017eo\u0161anai; tom\u0113r t\u0101 joproj\u0101m ir optimistiska par \u0161\u0101 stikla potenci\u0101lu. N\u0101kamajos posmos p\u0113tnieki pl\u0101no padzi\u013cin\u0101ti izp\u0113t\u012bt, k\u0101p\u0113c \u0161is stikls darbojas, un p\u0113c tam izmantot ieg\u016bt\u0101s zin\u0101\u0161anas, lai izstr\u0101d\u0101tu citus stikla veidus ar noder\u012bg\u0101m \u012bpa\u0161\u012bb\u0101m.<\/p>","protected":false},"excerpt":{"rendered":"<p>Glass sands used to manufacture high alumina glasses typically contain low percentages of magnesia. This mineral sand may come from [&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-75","post","type-post","status-publish","format-standard","hentry","category-alumina-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/posts\/75","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/comments?post=75"}],"version-history":[{"count":1,"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/posts\/75\/revisions"}],"predecessor-version":[{"id":76,"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/posts\/75\/revisions\/76"}],"wp:attachment":[{"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/media?parent=75"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/categories?post=75"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/tags?post=75"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}