Karbid k\u0159em\u00edku v pr\u00e1\u0161ku je p\u0159irozen\u011b se vyskytuj\u00edc\u00ed kombinace k\u0159em\u00edku a uhl\u00edku, kter\u00e1 vytv\u00e1\u0159\u00ed extr\u00e9mn\u011b tvrd\u00fd a z\u00e1rove\u0148 lehk\u00fd keramick\u00fd materi\u00e1l. Zelen\u00fd karbid k\u0159em\u00edku, kter\u00fd je \u010dist\u00fd a bezbarv\u00fd, se b\u011b\u017en\u011b pou\u017e\u00edv\u00e1 k v\u00fdrob\u011b brusn\u00fdch v\u00fdrobk\u016f, jako jsou brusn\u00e9 kotou\u010de a \u0159ezn\u00e9 kotou\u010de, a tak\u00e9 p\u0159i v\u00fdrob\u011b polovodi\u010d\u016f, kde jeho vysok\u00e1 \u010distota a elektrick\u00e9 vlastnosti hraj\u00ed rozhoduj\u00edc\u00ed roli.<\/p>\n
SiC, b\u011b\u017en\u011b zn\u00e1m\u00fd jako karborundum, je mimo\u0159\u00e1dn\u011b tvrd\u00fd materi\u00e1l, tvrd\u0161\u00ed je pouze diamant a karbid boru. D\u00edky sv\u00e9 extr\u00e9mn\u00ed tvrdosti a siln\u00fdm fyzik\u00e1ln\u00edm vlastnostem je SiC neocenitelnou sou\u010d\u00e1st\u00ed v pr\u016fmyslov\u00fdch aplikac\u00edch, kde je nutn\u00e1 odolnost v\u016f\u010di extr\u00e9mn\u00edm podm\u00ednk\u00e1m. Jeho robustn\u00ed pevnost mu nav\u00edc umo\u017e\u0148uje bez probl\u00e9m\u016f odol\u00e1vat vysok\u00fdm teplot\u00e1m i elektrick\u00e9mu nam\u00e1h\u00e1n\u00ed.<\/p>\n
D\u00edky chemick\u00e9 inertnosti k\u0159emene je odoln\u00fd v\u016f\u010di oxidaci a dal\u0161\u00edm nebezpe\u010dn\u00fdm chemick\u00fdm reakc\u00edm a poskytuje v laboratorn\u00edm prost\u0159ed\u00ed vysokou \u010distotu, p\u0159esnost a spolehlivost pro analytick\u00e9 pr\u00e1ce a experimenty.<\/p>\n
Karbid k\u0159em\u00edku se ji\u017e dlouho pou\u017e\u00edv\u00e1 v aplikac\u00edch vy\u017eaduj\u00edc\u00edch vysokou odolnost, jako jsou brzdy a spojky automobil\u016f a keramick\u00e9 desky v nepr\u016fst\u0159eln\u00fdch vest\u00e1ch. V posledn\u00ed dob\u011b si karbid k\u0159em\u00edku z\u00edskal oblibu pro pou\u017eit\u00ed v elektrick\u00fdch vozidlech, proto\u017ee pom\u00e1h\u00e1 prodlou\u017eit dojezdovou vzd\u00e1lenost zlep\u0161en\u00edm \u00fa\u010dinnosti syst\u00e9m\u016f p\u0159em\u011bny energie - toho lze dos\u00e1hnout sn\u00ed\u017een\u00edm velikosti i hmotnosti m\u011bni\u010d\u016f p\u0159i zachov\u00e1n\u00ed v\u00fdkonu - a z\u00e1rove\u0148 jeho izola\u010dn\u00ed vlastnosti pom\u00e1haj\u00ed minimalizovat nap\u011b\u0165ov\u00e9 \u0161pi\u010dky nebo p\u0159ep\u011bt\u00ed, kter\u00e9 mohou vznikat v syst\u00e9mech p\u0159em\u011bny energie.<\/p>\n
Karbid k\u0159em\u00edku v pr\u00e1\u0161ku je tvrd\u00e1 chemick\u00e1 slou\u010denina slo\u017een\u00e1 z k\u0159em\u00edku a uhl\u00edku, kter\u00e1 se pou\u017e\u00edv\u00e1 jako energetick\u00fd polovodi\u010d s \u0161irok\u00fdm p\u00e1smem a schopnost\u00ed odol\u00e1vat vysok\u00fdm teplot\u00e1m. P\u0159irozen\u011b se vyskytuje jako drahokam moissanit, masov\u011b se vyr\u00e1b\u00ed ve form\u011b zrn a pr\u00e1\u0161ku a je tak\u00e9 \u0161iroce pou\u017e\u00edv\u00e1n pro pou\u017eit\u00ed v brusivech nebo funk\u010dn\u00ed keramice.<\/p>\n
M\u011b\u010f m\u00e1 vynikaj\u00edc\u00ed tepelnou vodivost a odolnost proti korozi, co\u017e z n\u00ed \u010din\u00ed ide\u00e1ln\u00ed materi\u00e1l pro abrazivn\u00ed v\u00fdrobky, jako jsou trysky pro trysk\u00e1n\u00ed a sou\u010d\u00e1sti cyklon\u016f. Krom\u011b toho nach\u00e1z\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed ve funk\u010dn\u00ed keramice, pokro\u010dil\u00fdch \u017e\u00e1ruvzdorn\u00fdch materi\u00e1lech a metalurgick\u00fdch surovin\u00e1ch.<\/p>\n
\u010cern\u00fd SiC se hojn\u011b pou\u017e\u00edv\u00e1 k v\u00fdrob\u011b k\u0159em\u00edkov\u00fdch desti\u010dek a substr\u00e1t\u016f pro pou\u017eit\u00ed ve v\u00fdkonov\u00fdch polovodi\u010d\u00edch, LED diod\u00e1ch, optoelektronick\u00fdch za\u0159\u00edzen\u00edch a elektrick\u00fdch vozidlech. Brou\u0161en\u00e9 a lapovan\u00e9 povrchy z \u010dern\u00e9ho SiC se pou\u017e\u00edvaj\u00ed na karoseri\u00edch elektromobil\u016f k dosa\u017een\u00ed p\u0159esn\u00fdch rozm\u011br\u016f s hladk\u00fdm povrchem pro p\u0159esn\u00e9 rozm\u011bry a hladk\u00fd povrch, co\u017e zvy\u0161uje \u017eivotnost bateri\u00ed a dojezd p\u0159i sou\u010dasn\u00e9m sn\u00ed\u017een\u00ed velikosti\/hmotnosti m\u011bni\u010d\u016f\/konvertor\u016f energie. Vysokorychlostn\u00ed vlaky pou\u017e\u00edvaj\u00ed \u010dern\u00fd SiC tak\u00e9 pro jeho tvrdost, odolnost proti od\u011bru a elektrick\u00e9 vlastnosti.<\/p>\n
Karbid k\u0159em\u00edku je jedn\u00edm z nejtvrd\u0161\u00edch materi\u00e1l\u016f, kter\u00e9 lidstvo zn\u00e1, a m\u016f\u017ee se pochlubit neuv\u011b\u0159itelnou tvrdost\u00ed 32 GPa - v tvrdosti se mu vyrovn\u00e1 pouze diamant a karbid boru. Krom\u011b toho tento materi\u00e1l vykazuje v\u00fdjime\u010dnou pevnost v ohybu, lomovou hou\u017eevnatost a odolnost proti \u0161\u00ed\u0159en\u00ed trhlin - vlastnosti, d\u00edky nim\u017e je vysoce odoln\u00fd.<\/p>\n
SiC je zn\u00e1m\u00fd pro sv\u016fj vysok\u00fd Young\u016fv modul a pevnost v tahu 490 MPa, d\u00edky \u010demu\u017e je vhodn\u00fd pro extr\u00e9mn\u00ed nam\u00e1h\u00e1n\u00ed bez prask\u00e1n\u00ed pod tlakem. Krom\u011b toho je SiC d\u00edky sv\u00e9mu slo\u017een\u00ed odoln\u00fd v\u016f\u010di p\u016fsoben\u00ed kyselin nebo louh\u016f, zat\u00edmco jeho vysok\u00e1 teplotn\u00ed tolerance mu umo\u017e\u0148uje odol\u00e1vat teplot\u00e1m a\u017e 1600 stup\u0148\u016f C, ani\u017e by do\u0161lo k jeho po\u0161kozen\u00ed.<\/p>\n
Karbid k\u0159em\u00edku (SiC) je anorganick\u00e1 chemick\u00e1 slou\u010denina slo\u017een\u00e1 z k\u0159em\u00edku a uhl\u00edku. Zrna karbidu k\u0159em\u00edku se v p\u0159\u00edrod\u011b vyskytuj\u00ed jako drahokam moissanit, ale lze je tak\u00e9 komer\u010dn\u011b vyr\u00e1b\u011bt pro pou\u017eit\u00ed v brusivech a sp\u00e9kat do keramick\u00fdch komponent\u016f pro automobilov\u00e9 brzdov\u00e9 desti\u010dky a sp\u00e9kat do sp\u00e9kan\u00fdch keramick\u00fdch komponent\u016f obsahuj\u00edc\u00edch SCF pro v\u00fdrobu sp\u00e9kan\u00fdch komponent\u016f pro keramick\u00fd n\u00e1bytek pec\u00ed a kel\u00edmk\u016f; sp\u00e9kan\u00e9 komponenty karbidu k\u0159em\u00edku se tak\u00e9 ji\u017e po desetilet\u00ed st\u00e1vaj\u00ed kl\u00ed\u010dov\u00fdmi slo\u017ekami vysokoteplotn\u00edch keramick\u00fdch v\u00fdrobn\u00edch proces\u016f v \u017e\u00e1ruvzdorn\u00fdch materi\u00e1lech keramick\u00e9ho pr\u016fmyslu! Hraje z\u00e1sadn\u00ed roli ve vysokoteplotn\u00ed metalurgii kov\u016f jako deoxid\u00e1tor a vysokoteplotn\u00ed materi\u00e1l.<\/p>\n
\u010cist\u00fd grafit je elektrick\u00fd izolant; ve sm\u011bsi s p\u0159\u00edm\u011bsemi, jako je hlin\u00edk, b\u00f3r a gallium, se v\u0161ak st\u00e1v\u00e1 polovodi\u010dem s rozs\u00e1hl\u00fdm p\u00e1smov\u00fdm rozp\u011bt\u00edm a \u0161irok\u00fdmi p\u00e1smov\u00fdmi mezerami pro v\u00fdrobu elektronick\u00fdch za\u0159\u00edzen\u00ed p\u0159i zv\u00fd\u0161en\u00fdch teplot\u00e1ch a nap\u011bt\u00edch.<\/p>\n
Potravin\u00e1\u0159sk\u00e9 spole\u010dnosti se sna\u017e\u00ed dos\u00e1hnout vy\u0161\u0161\u00ed \u00fa\u010dinnosti a bezpe\u010dnosti, co\u017e vedlo k tomu, \u017ee se zelen\u00fd karbid k\u0159em\u00edku dostal do pop\u0159ed\u00ed jako p\u0159\u00edsada do zpracovatelsk\u00fdch za\u0159\u00edzen\u00ed. Jeho schopnost odol\u00e1vat teplu a opot\u0159eben\u00ed je dal\u0161\u00ed v\u00fdhodou p\u0159i zaji\u0161\u0165ov\u00e1n\u00ed lep\u0161\u00edch v\u00fdsledk\u016f zpracov\u00e1n\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon Carbide Powder – High Performance Abrasive for Industrial Applications Silicon carbide powder is a naturally-occurring combination of silicon 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":"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":[5],"tags":[],"class_list":["post-356","post","type-post","status-publish","format-standard","hentry","category-product-related"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts\/356","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/comments?post=356"}],"version-history":[{"count":1,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts\/356\/revisions"}],"predecessor-version":[{"id":357,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts\/356\/revisions\/357"}],"wp:attachment":[{"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/media?parent=356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/categories?post=356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/tags?post=356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}