![\"Recyklace](\"http:\/\/ceramicatijolart.com\/wp-content\/uploads\/2024\/05\/Silicon-Carbide-Recycling.jpg\")
<\/p>","protected":false},"excerpt":{"rendered":"Karbid k\u0159em\u00edku (SiC) se stal z\u00e1kladn\u00edm technologick\u00fdm materi\u00e1lem. Pou\u017e\u00edv\u00e1 se v brusivech, technick\u00e9 keramice a \u017e\u00e1ruvzdorn\u00fdch materi\u00e1lech - a tak\u00e9 p\u0159i v\u00fdrob\u011b polovodi\u010d\u016f.<\/p>\n
SiC se vyr\u00e1b\u00ed zah\u0159\u00edv\u00e1n\u00edm k\u0159emi\u010dit\u00e9ho p\u00edsku sm\u00edchan\u00e9ho s uhl\u00edkem ve form\u011b ropn\u00e9ho koksu p\u0159i vysok\u00fdch teplot\u00e1ch v obrovsk\u00fdch otev\u0159en\u00fdch \"Achesonov\u00fdch\" pec\u00edch a pot\u00e9 se vyr\u00e1b\u00ed v zelen\u00e9 i \u010dern\u00e9 variant\u011b pro pou\u017eit\u00ed jako stavebn\u00ed materi\u00e1l.<\/p>\n
Karbid k\u0159em\u00edku (SiC) je pr\u016fmyslov\u00fd materi\u00e1l s \u010detn\u00fdmi aplikacemi p\u0159i v\u00fdrob\u011b brusiva, polovodi\u010dov\u00fdch \u010dip\u016f a krystalov\u00fdch r\u00e1di\u00ed (viz obr\u00e1zek n\u00ed\u017ee). \u010cist\u00fd SiC je s\u00e1m o sob\u011b bezbarv\u00fd; p\u0159\u00edm\u011bsi \u017eeleza mu v\u0161ak dod\u00e1vaj\u00ed hn\u011bd\u00fd a\u017e \u010dern\u00fd odst\u00edn. Krom\u011b toho SiC slou\u017e\u00ed jako katalyz\u00e1tor i jako vysokoteplotn\u00ed pec - co by se tedy je\u0161t\u011b mohlo pokazit?<\/p>\n
P\u0159i dr\u00e1tov\u00e9m \u0159ez\u00e1n\u00ed k\u0159em\u00edkov\u00fdch ingotov\u00fdch desti\u010dek vznik\u00e1 velk\u00e9 mno\u017estv\u00ed odpadn\u00ed SiC suspenze. Tato sm\u011bs obsahuje pr\u00e1\u0161kov\u00fd SiC, kter\u00fd je zodpov\u011bdn\u00fd za tvrdost a \u0159ezn\u00fd v\u00fdkon, a polyetylenglykol (PEG), kter\u00fd slou\u017e\u00ed jako nosi\u010d i chladic\u00ed kapalina. B\u011bhem \u0159ez\u00e1n\u00ed se m\u011bn\u00ed distribuce velikosti \u010d\u00e1stic a doch\u00e1z\u00ed ke zne\u010di\u0161t\u011bn\u00ed prachov\u00fdmi \u010d\u00e1sticemi; pro \u00fa\u010dely op\u011btovn\u00e9ho pou\u017eit\u00ed je pak nutn\u00e9 ji p\u0159ed op\u011btovn\u00fdm pou\u017eit\u00edm vy\u010distit.<\/p>\n
V\u00fdzkumn\u00edci z Rice University vyv\u00edjej\u00ed nov\u00fd zp\u016fsob recyklace odpadu z k\u0159em\u00edkov\u00fdch ingot\u016f na energeticky \u00fa\u010dinn\u00fd, n\u00e1kladov\u011b efektivn\u00ed a vysoce kvalitn\u00ed brusn\u00fd produkt s vyu\u017eit\u00edm extrakce kapalina-kapalina a alkalick\u00e9ho rozpou\u0161t\u011bn\u00ed k v\u00fdrob\u011b pr\u00e1\u0161kov\u00e9 sm\u011bsi s obsahem 72% SiC a 28% k\u0159em\u00edku - pozd\u011bji se pou\u017e\u00edv\u00e1 k brou\u0161en\u00ed, le\u0161t\u011bn\u00ed nebo brou\u0161en\u00ed p\u0159edm\u011bt\u016f; lze jej dokonce nal\u00e9zt v letadlech nebo v\u011btrn\u00fdch ml\u00fdnech!<\/p>\n
V\u00fdkonov\u00e1 elektronika je z\u00e1kladem elektromobil\u016f a bude poh\u00e1n\u011bt masovou elektrifikaci automobil\u016f. Karbid k\u0159em\u00edku (SiC) se stal atraktivn\u00edm n\u00e1hradn\u00edm materi\u00e1lem v syst\u00e9mech pro p\u0159em\u011bnu energie, jako jsou hlavn\u00ed trak\u010dn\u00ed m\u011bni\u010de pro BEV a FCEV; to umo\u017e\u0148uje lep\u0161\u00ed energetickou \u00fa\u010dinnost, ni\u017e\u0161\u00ed sp\u00ednac\u00ed ztr\u00e1ty, bezpe\u010dn\u011bj\u0161\u00ed provoz p\u0159i vysok\u00fdch teplot\u00e1ch, vy\u0161\u0161\u00ed nap\u011b\u0165ovou kapacitu v r\u00e1mci men\u0161\u00edch a leh\u010d\u00edch syst\u00e9m\u016f.<\/p>\n
SiC se stal z\u00e1kladn\u00edm materi\u00e1lem v oblasti elektromobil\u016f (EV), od mal\u00fdch m\u011bni\u010d\u016f a\u017e po velk\u00e9 m\u011bni\u010de a akumul\u00e1tory. Tato oblast p\u0159edstavuje pro v\u00fdrobce technologi\u00ed SiC obrovsk\u00fd r\u016fstov\u00fd potenci\u00e1l, a proto je nezbytn\u00e9, aby dr\u017eeli krok s v\u00fdvojem, kter\u00fd by mohl zm\u011bnit popt\u00e1vku po jejich v\u00fdrobc\u00edch.<\/p>\n
Nov\u00e9 elektromobily pou\u017e\u00edvaj\u00ed baterie s mnohem v\u011bt\u0161\u00ed kapacitou a vy\u017eaduj\u00ed od sv\u00fdch st\u0159\u00edda\u010d\u016f v\u011bt\u0161\u00ed v\u00fdkon pro zvl\u00e1dnut\u00ed t\u00e9to z\u00e1t\u011b\u017ee, co\u017e vy\u017eaduje v\u00edce tranzistor\u016f MOSFET na st\u0159\u00edda\u010d a potenci\u00e1ln\u011b zvy\u0161uje popt\u00e1vku po karbidov\u00fdch tranzistorech MOSFET.<\/p>\n
Aby podniky mohly uspokojit tuto rostouc\u00ed popt\u00e1vku, mus\u00ed vypracovat rozumnou recykla\u010dn\u00ed strategii, kter\u00e1 zohledn\u00ed dynamiku trhu, hodnotov\u00e9ho \u0159et\u011bzce a technologi\u00ed. Spole\u010dnosti, kter\u00e9 dok\u00e1\u017eou rychle rozv\u00edjet kl\u00ed\u010dov\u00e9 schopnosti a vytv\u00e1\u0159et partnerstv\u00ed podporuj\u00edc\u00ed podnik\u00e1n\u00ed v oblasti elektrick\u00fdch vozidel, z\u00edskaj\u00ed konkuren\u010dn\u00ed v\u00fdhodu a vytvo\u0159\u00ed hodnotu; to bude zahrnovat tak\u00e9 p\u0159ezkoum\u00e1n\u00ed \u010dasov\u00fdch pl\u00e1n\u016f reinvestic, aby se zajistilo, \u017ee nez\u016fstanou pozadu za k\u0159ivkou popt\u00e1vky.<\/p>\n
Karbid k\u0159em\u00edku (SiC) je syntetick\u00fd pr\u016fmyslov\u00fd miner\u00e1l, kter\u00fd se d\u00edky sv\u00fdm v\u00fdjime\u010dn\u00fdm vlastnostem, jako je tvrdost, odolnost v\u016f\u010di vysok\u00fdm teplot\u00e1m a chemik\u00e1li\u00edm, hojn\u011b vyu\u017e\u00edv\u00e1 v mnoha pr\u016fmyslov\u00fdch odv\u011btv\u00edch. Zat\u00edmco moissanit se p\u0159irozen\u011b vyskytuje pouze ve stopov\u00e9m mno\u017estv\u00ed v n\u011bkter\u00fdch meteoritech nebo korundov\u00fdch lo\u017eisc\u00edch, v\u011bt\u0161ina dnes vyr\u00e1b\u011bn\u00e9ho SiC poch\u00e1z\u00ed ze syntetick\u00e9 formy ve form\u011b granul\u00ed nebo pr\u00e1\u0161ku.<\/p>\n
Bohu\u017eel velk\u00e1 \u010d\u00e1st materi\u00e1lu, kter\u00fd se dost\u00e1v\u00e1 do v\u00fdrobn\u00edch linek, kon\u010d\u00ed jako vedlej\u0161\u00ed produkt v\u00fdrobn\u00edch proces\u016f, p\u0159i\u010dem\u017e velk\u00e1 \u010d\u00e1st struskov\u00e9ho odpadu (obsahuj\u00edc\u00edho k\u0159em\u00edk a uhl\u00edk) obvykle kon\u010d\u00ed jako odpad v pec\u00edch. A\u017e dosud bylo jedinou mo\u017enost\u00ed spalov\u00e1n\u00ed nebo solvol\u00fdza, kter\u00e9 jsou energeticky n\u00e1ro\u010dn\u00e9 a produkuj\u00ed nebezpe\u010dn\u00e9 vedlej\u0161\u00ed produkty.<\/p>\n
V\u00fdzkumn\u00edci vyvinuli proces zvan\u00fd flash upcycling, kter\u00fd tuto strusku p\u0159em\u011b\u0148uje na vysoce kvalitn\u00ed karbid k\u0159em\u00edku (SiC). Zah\u0159\u00edv\u00e1n\u00edm p\u0159i teplot\u00e1ch dosahuj\u00edc\u00edch 2 400 stup\u0148\u016f C v peci s inertn\u00ed atmosf\u00e9rou se p\u0159i bleskov\u00e9 recyklaci z\u00edsk\u00e1v\u00e1 \u010dist\u00fd karbid k\u0159em\u00edku, kter\u00fd lze vyu\u017e\u00edt v mnoha aplikac\u00edch.<\/p>\n
Pro tuto strusku existuj\u00ed separa\u010dn\u00ed a \u010distic\u00ed procesy, av\u0161ak jejich schopnost z\u00edskat vysoce kvalitn\u00ed aplikace, jako jsou vysoce kvalitn\u00ed aplikace, je omezen\u00e1 kv\u016fli omezen\u00edm velikosti zrn a probl\u00e9m\u016fm s \u0159ezn\u00fdm v\u00fdkonem; sou\u010dasn\u00e9 metody recyklace zahrnuj\u00ed downcycling nebo deponierung; Fraunhofer IKTS vytvo\u0159il cenov\u011b dostupnou metodu recyklace pr\u00e1\u0161kovit\u00fdch SiC odpad\u016f pomoc\u00ed jednoduch\u00fdch, ale ekonomick\u00fdch proces\u016f a produkt\u016f.<\/p>\n
Karbid k\u0159em\u00edku je tvrd\u00e1 a odoln\u00e1 neoxidov\u00e1 keramika s p\u016fsobivou \u0159adou fyzik\u00e1ln\u00edch a chemick\u00fdch vlastnost\u00ed, jako je vysok\u00e1 pevnost, n\u00edzk\u00e1 tepeln\u00e1 rozta\u017enost a schopnost odol\u00e1vat extr\u00e9mn\u00edm teplot\u00e1m - vlastnosti, d\u00edky nim\u017e se stal obl\u00edben\u00fdm \u017e\u00e1ruvzdorn\u00fdm materi\u00e1lem i sou\u010d\u00e1stkami v\u00fdkonov\u00e9 elektroniky pro elektromobily a bezdr\u00e1tov\u00e9 vys\u00edla\u010de 5G. V\u00fdrobn\u00ed n\u00e1klady karbidu k\u0159em\u00edku jsou bohu\u017eel st\u00e1le pom\u011brn\u011b vysok\u00e9.<\/p>\n
SiC je \u0161iroce uzn\u00e1v\u00e1n pro svou velmi kvalitn\u00ed krystalizovanou formu, kter\u00e1 se pou\u017e\u00edv\u00e1 pro l\u00e9ka\u0159sk\u00e9 aplikace, jako jsou \u0159ezn\u00e9 n\u00e1stroje a chirurgick\u00e9 implant\u00e1ty. Podle odhad\u016f by ro\u010dn\u00ed n\u00e1klady na jeho v\u00fdrobu mohly dos\u00e1hnout a\u017e $1,5 miliardy!<\/p>\n
V\u011bdci \u00fasp\u011b\u0161n\u011b vyvinuli ekologick\u00fd zp\u016fsob v\u00fdroby karbidu k\u0159em\u00edku z odpadn\u00edho skla a plast\u016f. Pomoc\u00ed energeticky \u00fa\u010dinn\u00e9ho procesu bleskov\u00e9 recyklace p\u0159em\u011bnili vy\u0159azen\u00e9 plasty vyztu\u017een\u00e9 sklen\u011bn\u00fdmi vl\u00e1kny (GFRP) na karbid k\u0159em\u00edku (SiC). GFRP je hojn\u011b roz\u0161\u00ed\u0159en\u00fd materi\u00e1l, kter\u00fd se nach\u00e1z\u00ed v\u0161ude, od sou\u010d\u00e1st\u00ed letadel po lopatky v\u011btrn\u00fdch ml\u00fdn\u016f, ale jeho siln\u00e9 a z\u00e1rove\u0148 odoln\u00e9 vlastnosti \u010dasto \u010din\u00ed recyklaci po skon\u010den\u00ed jeho \u017eivotnosti n\u00e1ro\u010dnou.<\/p>\n
Bleskov\u00e1 upcyklace je ekologickou alternativou spalov\u00e1n\u00ed a solvol\u00fdzy, p\u0159i n\u00ed\u017e se pou\u017e\u00edvaj\u00ed toxick\u00e9 chemik\u00e1lie. Anal\u00fdza \u017eivotn\u00edho cyklu nav\u00edc ukazuje, \u017ee tento regenera\u010dn\u00ed syst\u00e9m produkuje m\u00e9n\u011b energie, emis\u00ed sklen\u00edkov\u00fdch plyn\u016f a vody ne\u017e tradi\u010dn\u00ed metody likvidace FRP.<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
Silicon Carbide (SiC) has emerged as an essential technological material. It’s utilized for use in abrasives, technical ceramics and refractories – as well as semiconductor manufacturing. Produced by heating silica sand mixed with carbon in the form of petroleum coke at high temperatures in huge open “Acheson” furnaces, SiC is then produced in both Green […]<\/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":"default","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":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","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-378","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/378","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/comments?post=378"}],"version-history":[{"count":3,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/378\/revisions"}],"predecessor-version":[{"id":530,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/378\/revisions\/530"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/media?parent=378"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/categories?post=378"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/tags?post=378"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}