Karbid k\u0159em\u00edku (SiC) je mimo\u0159\u00e1dn\u011b odoln\u00fd materi\u00e1l, kter\u00fd se pou\u017e\u00edv\u00e1 k v\u00fdrob\u011b \u0159ady v\u00fdrobk\u016f. Jednou z jeho kl\u00ed\u010dov\u00fdch vlastnost\u00ed je odolnost v\u016f\u010di vysok\u00fdm teplot\u00e1m, frekvenc\u00edm a nap\u011bt\u00edm - co\u017e jin\u00e9 materi\u00e1ly nedok\u00e1\u017eou.<\/p>\n
Edward Acheson tuto slou\u010deninu poprv\u00e9 um\u011ble syntetizoval v roce 1891. Acheson\u016fv objev vedl k pr\u016fmyslov\u00fdm aplikac\u00edm, v\u010detn\u011b brusn\u00fdch materi\u00e1l\u016f a brusn\u00fdch kotou\u010d\u016f, n\u00e1t\u011br\u016f odoln\u00fdch proti opot\u0159eben\u00ed pro \u010derpadla a raketov\u00e9 motory, polovodi\u010dov\u00fdch substr\u00e1t\u016f sv\u011bteln\u00fdch diod (LED), n\u00e1t\u011br\u016f odoln\u00fdch proti opot\u0159eben\u00ed pou\u017e\u00edvan\u00fdch jako ochrana proti opot\u0159eben\u00ed atd.<\/p>\n
Karbid k\u0159em\u00edku (SiC) je mimo\u0159\u00e1dn\u011b u\u017eite\u010dn\u00fd materi\u00e1l pou\u017e\u00edvan\u00fd pro \u017e\u00e1ruvzdorn\u00e9 materi\u00e1ly, pr\u016fmyslov\u00e9 pece a d\u00edly odoln\u00e9 proti opot\u0159eben\u00ed. SiC m\u00e1 mnoho jedine\u010dn\u00fdch vlastnost\u00ed, d\u00edky nim\u017e je velmi u\u017eite\u010dn\u00fd v r\u016fzn\u00fdch aplikac\u00edch - jeho \u017e\u00e1ruvzdorn\u00fd povrch odol\u00e1v\u00e1 prost\u0159ed\u00ed s vysokou teplotou bez degradace nebo koroze; jeho extr\u00e9mn\u011b pevn\u00e9 j\u00e1dro nav\u00edc odol\u00e1v\u00e1 opot\u0159eben\u00ed a trh\u00e1n\u00ed.<\/p>\n
\u017d\u00e1ruvzdorn\u00e9 a brusn\u00e9 materi\u00e1ly z karbidu k\u0159em\u00edku Mezi materi\u00e1ly pou\u017e\u00edvan\u00e9 karbidem k\u0159em\u00edku pat\u0159\u00ed funk\u010dn\u00ed keramika, pokro\u010dil\u00e9 \u017e\u00e1ruvzdorn\u00e9 materi\u00e1ly a brusiva. Karbid k\u0159em\u00edku lze nal\u00e9zt v pec\u00edch a pr\u016fmyslov\u00fdch topn\u00fdch t\u011blesech, jako\u017e i v cihl\u00e1ch pou\u017e\u00edvan\u00fdch k vyzd\u00edv\u00e1n\u00ed pec\u00ed \u017e\u00e1ruvzdorn\u00e9 cihly vyzd\u00edvky pec\u00ed trvanliv\u00e9 v\u00fdrobky s dlouhou \u017eivotnost\u00ed vyroben\u00e9 z tohoto \u017e\u00e1ruvzdorn\u00e9ho materi\u00e1lu, jako je \"smirkov\u00fd pap\u00edr\", kotou\u010de no\u017ee \u010depele boty mimo jin\u00e9 vyroben\u00e9 s pou\u017eit\u00edm tohoto \u017e\u00e1ruvzdorn\u00e9ho materi\u00e1lu v ne\u017eelezn\u00e9 metalurgii, kde jej lze nal\u00e9zt tak\u00e9 pou\u017eit\u00fd v brusn\u00fdch kotou\u010d\u00edch, jako\u017e i v topn\u00fdch t\u011blesech, kter\u00e9 se nach\u00e1zej\u00ed v pr\u016fmyslov\u00fdch pec\u00edch \u017e\u00e1ruvzdorn\u00e9 materi\u00e1ly vyroben\u00e9 s pou\u017eit\u00edm tohoto materi\u00e1lu.<\/p>\n
Karbid k\u0159em\u00edku je jedn\u00edm z nejtvrd\u0161\u00edch p\u0159\u00edrodn\u00edch materi\u00e1l\u016f, kter\u00e9 kdy byly objeveny.Poprv\u00e9 ho syntetizoval Edward Acheson v roce 1891, kdy\u017e se v elektricky zah\u0159\u00e1t\u00e9 tavenin\u011b uhl\u00edku a oxidu hlinit\u00e9ho objevily mal\u00e9 \u010dern\u00e9 krystalky. Karbid k\u0159em\u00edku se v p\u0159\u00edrod\u011b vyskytuje tak\u00e9 jako vz\u00e1cn\u00fd miner\u00e1l moissanit; jeho masov\u00e1 v\u00fdroba byla zah\u00e1jena v roce 1905 pro pou\u017eit\u00ed jako pr\u016fmyslov\u00e9 brusivo.<\/p>\n
Materi\u00e1ly podobn\u00e9 brusiv\u016fm, jako je oxid zirkoni\u010dit\u00fd, jsou vynikaj\u00edc\u00ed kombinac\u00ed tvrdosti, trvanlivosti, tepeln\u00e9 odolnosti, odolnosti proti korozi a ot\u011bru - ide\u00e1ln\u00ed pro brusn\u00e9 kotou\u010de, \u0159ezn\u00e9 n\u00e1stroje nebo \u017e\u00e1ruvzdorn\u00e9 oblo\u017een\u00ed.<\/p>\n
Substr\u00e1ty vyroben\u00e9 z k\u0159em\u00edku se \u0161iroce pou\u017e\u00edvaj\u00ed v polovodi\u010dov\u00e9 elektronice, nap\u0159\u00edklad ve v\u00fdkonov\u00fdch za\u0159\u00edzen\u00edch a mikrovlnn\u00fdch radiofrekven\u010dn\u00edch sou\u010d\u00e1stk\u00e1ch, kde jeho vodivost nebo poloizola\u010dn\u00ed schopnost z\u00e1vis\u00ed na p\u0159\u00edm\u011bs\u00edch (tzv. dopantech) p\u0159id\u00e1van\u00fdch b\u011bhem epitaxn\u00edho r\u016fstu a v\u00fdrobn\u00edch proces\u016f za\u0159\u00edzen\u00ed. Vodiv\u00e9 formy se pou\u017e\u00edvaj\u00ed p\u0159edev\u0161\u00edm pro vysokoteplotn\u00ed\/nap\u011b\u0165ov\u00e1 za\u0159\u00edzen\u00ed, jako jsou Schottkyho diody nebo sm\u011bsn\u00e9 v\u00fdkonov\u00e9 tranzistory PiN, zat\u00edmco polovodiv\u00e9 verze mohou b\u00fdt vhodn\u00e9 pro za\u0159\u00edzen\u00ed s ni\u017e\u0161\u00edmi teplotami\/nap\u011bt\u00edm, jako jsou Schottkyho diody s p\u0159echodovou bari\u00e9rou\/sm\u011bsn\u00e9 v\u00fdkonov\u00e9 tranzistory PiN.<\/p>\n
Karbid k\u0159em\u00edku (SiC) se v posledn\u00ed dob\u011b stal nepostradateln\u00fdm technologick\u00fdm materi\u00e1lem v mechanick\u00fdch a elektronick\u00fdch aplikac\u00edch. SiC je jednou z nejtvrd\u0161\u00edch keramick\u00fdch l\u00e1tek na Zemi s vynikaj\u00edc\u00ed odolnost\u00ed proti erozi a ot\u011bru a tak\u00e9 s n\u00edzkou tepelnou rozta\u017enost\u00ed, odolnost\u00ed v\u016f\u010di kyselin\u00e1m a vynikaj\u00edc\u00edmi vlastnostmi ochrany proti erozi\/od\u011bru.<\/p>\n
Keramick\u00e9 bloky se d\u00edky sv\u00e9 tvrdosti b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed jako nepr\u016fst\u0159eln\u00e9 vesty. Kulky se od nich ne\u0161kodn\u011b odr\u00e1\u017eej\u00ed.<\/p>\n
SiC je polovodi\u010dov\u00fd materi\u00e1l se \u0161irok\u00fdm p\u00e1smem, kter\u00fd se st\u0159\u00eddav\u011b \u0159ad\u00ed mezi vodi\u010de a izolanty, tak\u017ee je d\u00edky sv\u00e9 schopnosti odol\u00e1vat vy\u0161\u0161\u00edm nap\u011bt\u00edm ne\u017e tradi\u010dn\u00ed k\u0159em\u00edkov\u00e9 polovodi\u010de vynikaj\u00edc\u00ed volbou pro v\u00fdkonovou elektroniku. D\u00edky t\u00e9to vlastnosti je pou\u017eiteln\u00fd zejm\u00e9na v silov\u00e9 elektronice elektrick\u00fdch vozidel, kde trak\u010dn\u00ed m\u011bni\u010de a DC\/DC m\u011bni\u010de mus\u00ed b\u00fdt schopny zvl\u00e1dat vy\u0161\u0161\u00ed \u00farovn\u011b proudu, aby se prodlou\u017eila doba nab\u00edjen\u00ed bateri\u00ed a z\u00e1rove\u0148 se zv\u00fd\u0161il dojezd na jedno nabit\u00ed. Nicm\u00e9n\u011b chlazen\u00ed t\u011bchto za\u0159\u00edzen\u00ed z\u016fst\u00e1v\u00e1 kl\u00ed\u010dov\u00e9; SiC pom\u00e1h\u00e1 tomuto dilematu p\u0159edej\u00edt, ani\u017e by do\u0161lo ke zhor\u0161en\u00ed kritick\u00fdch elektrick\u00fdch vlastnost\u00ed nebo v\u00fdkonu.<\/p>\n
Karbid k\u0159em\u00edku je vynikaj\u00edc\u00edm materi\u00e1lem pro pou\u017eit\u00ed ve vysokonap\u011b\u0165ov\u00e9 v\u00fdkonov\u00e9 elektronice v aplikac\u00edch skladov\u00e1n\u00ed energie, jako jsou st\u0159\u00edda\u010de, kter\u00e9 \u0159\u00edd\u00ed z\u00edskanou sol\u00e1rn\u00ed energii a dod\u00e1vaj\u00ed ji zp\u011bt do s\u00edt\u011b, a tak\u00e9 v elektrick\u00fdch vozidlech. D\u00edky sv\u00e9 vy\u0161\u0161\u00ed hustot\u011b v\u00fdkonu, lep\u0161\u00ed \u00fa\u010dinnosti a vy\u0161\u0161\u00ed spolehlivosti umo\u017e\u0148uje vyr\u00e1b\u011bt cenov\u011b v\u00fdhodn\u011bj\u0161\u00ed za\u0159\u00edzen\u00ed ne\u017e k\u0159em\u00edkov\u00e9 polovodi\u010de.<\/p>\n
Karbid k\u0159em\u00edku (SiC) je extr\u00e9mn\u011b pevn\u00fd a odoln\u00fd materi\u00e1l s velkou p\u00e1smovou mezerou, d\u00edky n\u00ed\u017e m\u016f\u017ee slou\u017eit jako izolant nebo vodi\u010d. P\u00e1sov\u00e1 mezera materi\u00e1lu ozna\u010duje energii pot\u0159ebnou k p\u0159echodu elektron\u016f z valen\u010dn\u00edho do vodivostn\u00edho p\u00e1su; vodi\u010de maj\u00ed obvykle men\u0161\u00ed energetick\u00e9 mezery, zat\u00edmco izolanty v\u011bt\u0161\u00ed.<\/p>\n
Spole\u010dnost Wolfspeed je uzn\u00e1van\u00fdm l\u00eddrem v oboru SiC za\u0159\u00edzen\u00ed pro vysokonap\u011b\u0165ov\u00e9 aplikace. Jej\u00ed 200mm tov\u00e1rna na v\u00fdrobu SiC za\u0159\u00edzen\u00ed a v\u00fdrobn\u00ed za\u0159\u00edzen\u00ed pro epi r\u016fst mohou uspokojit popt\u00e1vku po pokro\u010dil\u00fdch za\u0159\u00edzen\u00edch z karbidu k\u0159em\u00edku v rozsahu 5-10 kW, a t\u00edm p\u0159isp\u011bt ke zlep\u0161en\u00ed \u00fa\u010dinnosti a \u017eivotnosti bateri\u00ed v elektrick\u00fdch vozidlech.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon carbide (SiC) is an extremely durable material used to manufacture an array of products. One of its key characteristics is its resistance to high temperatures, frequencies and voltages – something other materials cannot. Edward Acheson synthesized this compound artificially for the first time in 1891. Acheson’s discovery led to industrial applications, including abrasives and […]<\/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-128","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/128","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=128"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/128\/revisions"}],"predecessor-version":[{"id":129,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/128\/revisions\/129"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/media?parent=128"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/categories?post=128"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/tags?post=128"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}