![\"keramick\u00fd](\"http:\/\/siliconcarbideceramic.net\/wp-content\/uploads\/2024\/04\/silicon-carbide-ceramic.jpg\")
<\/p>","protected":false},"excerpt":{"rendered":"Karbid k\u0159em\u00edku (SiC) se chov\u00e1 podobn\u011b jako diamant a je jedn\u00edm z nejleh\u010d\u00edch, nejtvrd\u0161\u00edch a nejpevn\u011bj\u0161\u00edch pokro\u010dil\u00fdch keramick\u00fdch materi\u00e1l\u016f sou\u010dasnosti. Krom\u011b toho SiC nab\u00edz\u00ed vynikaj\u00edc\u00ed odolnost proti ot\u011bru a erozi a n\u00edzk\u00fd koeficient tepeln\u00e9 rozta\u017enosti.<\/p>\n
nab\u00edz\u00edme hutnou keramiku StarCeram SiC v r\u016fzn\u00fdch tvarech a velikostech vyr\u00e1b\u011bnou bu\u010f reak\u010dn\u00edm sp\u00e9k\u00e1n\u00edm, nebo konven\u010dn\u00edmi metodami tv\u00e1\u0159en\u00ed keramiky, p\u0159i\u010dem\u017e ka\u017ed\u00e1 z t\u011bchto metod m\u00e1 pro fin\u00e1ln\u00ed v\u00fdrobky v\u00fdraznou mikrostrukturu.<\/p>\n
Karbid k\u0159em\u00edku (SiC), b\u011b\u017en\u011b ozna\u010dovan\u00fd jako karborundum, je jedn\u00edm z nejtvrd\u0161\u00edch a nejleh\u010d\u00edch pokro\u010dil\u00fdch keramick\u00fdch materi\u00e1l\u016f, kter\u00e9 jsou v sou\u010dasnosti k dispozici. D\u00edky sv\u00fdm vynikaj\u00edc\u00edm vlastnostem se stal jednou z preferovan\u00fdch voleb v prost\u0159ed\u00edch, kde jin\u00e9 materi\u00e1ly nedok\u00e1\u017eou odolat tepeln\u00e9mu nam\u00e1h\u00e1n\u00ed.<\/p>\n
Je zn\u00e1mo, \u017ee SiC si zachov\u00e1v\u00e1 svou pevnost a\u017e do 1600oC a z\u00e1rove\u0148 z\u016fst\u00e1v\u00e1 chemicky \u010dist\u00fd a odoln\u00fd v\u016f\u010di oxidaci i p\u0159i t\u011bchto vy\u0161\u0161\u00edch teplot\u00e1ch, tak\u017ee je ide\u00e1ln\u00ed pro podp\u011bry z\u00e1sobn\u00edk\u016f na desti\u010dky a lopatky v pec\u00edch na polovodi\u010de i pro police pec\u00ed s velk\u00fdmi v\u00fdkyvy teplot.<\/p>\n
D\u00edky sv\u00e9 odolnosti proti ot\u011bru a erozi se tento materi\u00e1l pou\u017e\u00edv\u00e1 v chemick\u00fdch provozech pro trysky post\u0159ikova\u010d\u016f a dal\u0161\u00ed sou\u010d\u00e1sti, p\u0159i brou\u0161en\u00ed a \u0159ez\u00e1n\u00ed a tak\u00e9 v prost\u0159ed\u00edch, jako jsou za\u0159\u00edzen\u00ed na ods\u00ed\u0159en\u00ed spalin.<\/p>\n
Karbid k\u0159em\u00edku je strukturn\u00ed keramika s v\u00fdjime\u010dnou odolnost\u00ed proti opot\u0159eben\u00ed, n\u00edzk\u00fdm koeficientem tepeln\u00e9 rozta\u017enosti a vysokou tvrdost\u00ed; d\u00edky t\u011bmto vlastnostem je \u017e\u00e1dan\u00fdm materi\u00e1lem v pr\u016fmyslov\u00fdch aplikac\u00edch, jako jsou spalovac\u00ed komory a za\u0159\u00edzen\u00ed na ods\u00ed\u0159en\u00ed spalin. Karbid k\u0159em\u00edku nach\u00e1z\u00ed uplatn\u011bn\u00ed tak\u00e9 jako abrazivo pro tryskac\u00ed trysky a jako sou\u010d\u00e1stky odoln\u00e9 proti korozi a opot\u0159eben\u00ed v n\u00e1bytku pec\u00ed, jako jsou topeni\u0161tn\u00ed desky, rekupera\u010dn\u00ed trubky, tla\u010dn\u00e9 desky, kluzn\u00e9 li\u0161ty a lehk\u00e9 nosn\u00edky.<\/p>\n
Karbid boru a karbid k\u0159em\u00edku jsou obl\u00edben\u00fdmi tribologick\u00fdmi sou\u010d\u00e1stmi v chemick\u00e9m pr\u016fmyslu d\u00edky sv\u00e9 v\u00fdjime\u010dn\u00e9 tvrdosti a odolnosti proti opot\u0159eben\u00ed p\u0159i vy\u0161\u0161\u00edch teplot\u00e1ch. D\u00edky sv\u00e9 v\u00fdjime\u010dn\u00e9 tvrdosti a odolnosti proti opot\u0159eben\u00ed jsou vhodn\u00e9 pro pou\u017eit\u00ed v trysk\u00e1ch, \u010derpadlech, z\u00e1pustk\u00e1ch a \u0159ezn\u00fdch n\u00e1stroj\u00edch a lze je tak\u00e9 snadno tvarovat do tvar\u016f, kter\u00e9 v mnoha p\u0159\u00edpadech nahrazuj\u00ed kovov\u00e9 sou\u010d\u00e1sti. Vykazuj\u00ed tak\u00e9 vynikaj\u00edc\u00ed odolnost proti p\u016fsoben\u00ed chemick\u00fdch l\u00e1tek.<\/p>\n
Uk\u00e1zalo se, \u017ee karbid k\u0159em\u00edku s nitridovou vazbou p\u0159ekon\u00e1v\u00e1 ve v\u0161ech testovan\u00fdch p\u016fdn\u00edch podm\u00ednk\u00e1ch ocelov\u00fd i vycp\u00e1vkov\u00fd svar, a to d\u00edky sv\u00e9 oxidov\u00e9 bari\u00e9\u0159e, kter\u00e1 zabra\u0148uje p\u0159\u00edm\u00e9mu kontaktu mezi napaden\u00fdmi druhy a substr\u00e1tem. Jeho odolnost v\u016f\u010di oxidaci nav\u00edc p\u0159evy\u0161ovala v\u011bt\u0161inu materi\u00e1l\u016f; k degradaci doch\u00e1zelo pomaleji ne\u017e u kovov\u00fdch nebo abrazivn\u00edch materi\u00e1l\u016f, co\u017e z karbidu k\u0159em\u00edku s nitridovou vazbou \u010din\u00ed vynikaj\u00edc\u00ed materi\u00e1l pro dlouhodob\u00e9 pou\u017eit\u00ed v nep\u0159\u00edzniv\u00e9m prost\u0159ed\u00ed, kde by se kysl\u00edk mohl dostat na povrch a zp\u016fsobit po\u0161kozen\u00ed.<\/p>\n
Keramika z karbidu k\u0159em\u00edku m\u00e1 vynikaj\u00edc\u00ed odolnost proti tepeln\u00fdm \u0161ok\u016fm, tak\u017ee je vhodn\u00e1 pro pou\u017eit\u00ed v \u0159ad\u011b aplikac\u00ed, jako je filtrace, inerci\u00e1ln\u00ed odpalovac\u00ed za\u0159\u00edzen\u00ed a trysky raketov\u00fdch motor\u016f. P\u011bnov\u00e1 keramick\u00e1 filtrace se b\u011b\u017en\u011b pou\u017e\u00edv\u00e1 k odstra\u0148ov\u00e1n\u00ed nekovov\u00fdch vm\u011bstk\u016f ze slitin a k \u010di\u0161t\u011bn\u00ed kovov\u00fdch roztok\u016f, zat\u00edmco ot\u011bruvzdorn\u00e9 dla\u017edice SiC lze nal\u00e9zt v oblo\u017een\u00ed \u010disti\u010d\u016f v\u00fdfukov\u00fdch plyn\u016f automobil\u016f.<\/p>\n
Odolnost keramiky proti tepeln\u00fdm \u0161ok\u016fm z\u00e1vis\u00ed na koeficientu tepeln\u00e9 rozta\u017enosti. P\u0159i kol\u00eds\u00e1n\u00ed teplot se jej\u00ed tepeln\u00e1 rozta\u017enost odpov\u00eddaj\u00edc\u00edm zp\u016fsobem m\u011bn\u00ed a vytv\u00e1\u0159\u00ed takzvan\u00fd tepeln\u00fd gradient, kter\u00fd \u010dasto zp\u016fsobuje nap\u011bt\u00ed na jej\u00edm povrchu a nakonec vede k prasknut\u00ed.<\/p>\n
Odolnost keramiky proti teplotn\u00edm \u0161ok\u016fm lze testovat pomoc\u00ed Hasselmannovy metody, p\u0159i n\u00ed\u017e jsou zku\u0161ebn\u00ed vzorky vystaveny teplot\u00e1m mezi 300o a 1000o, pot\u00e9 jsou rychle ochlazeny ve studen\u00e9 kapalin\u011b a n\u00e1sledn\u011b je zm\u011b\u0159en pokles jejich pevnosti v ohybu p\u0159i r\u016fzn\u00fdch teplotn\u00edch poklesech - ty, kter\u00e9 vykazuj\u00ed nejni\u017e\u0161\u00ed pokles, jsou pova\u017eov\u00e1ny za nejodoln\u011bj\u0161\u00ed proti teplotn\u00edm \u0161ok\u016fm.<\/p>\n
Karbid k\u0159em\u00edku se vyzna\u010duje vynikaj\u00edc\u00ed odolnost\u00ed proti tepeln\u00fdm \u0161ok\u016fm i tvrdost\u00ed, tak\u017ee je vhodn\u00fd pro r\u016fzn\u00e1 pr\u016fmyslov\u00e1 pou\u017eit\u00ed, nap\u0159\u00edklad jako brusivo a sou\u010d\u00e1stky odoln\u00e9 proti opot\u0159eben\u00ed. Krom\u011b toho tento materi\u00e1l odol\u00e1v\u00e1 abrazivn\u00edmu p\u016fsoben\u00ed p\u0159i obr\u00e1b\u011bn\u00ed, \u0159ez\u00e1n\u00ed vodn\u00edm paprskem a p\u00edskov\u00e1n\u00ed, p\u0159i\u010dem\u017e z\u016fst\u00e1v\u00e1 vysoce odoln\u00fd v\u016f\u010di korozi i p\u0159i vy\u0161\u0161\u00edch teplot\u00e1ch.<\/p>\n
Karbid k\u0159em\u00edku je mimo\u0159\u00e1dn\u011b tvrd\u00fd keramick\u00fd materi\u00e1l s v\u00fdjime\u010dnou odolnost\u00ed proti od\u011bru a ochranou proti korozi, kter\u00fd z\u016fst\u00e1v\u00e1 pevn\u00fd i p\u0159i vysok\u00fdch teplot\u00e1ch, tak\u017ee je ide\u00e1ln\u00ed pro pou\u017eit\u00ed v n\u00e1ro\u010dn\u00fdch podm\u00ednk\u00e1ch - je to jeden z hlavn\u00edch materi\u00e1l\u016f pou\u017e\u00edvan\u00fdch v kompozitn\u00edch panc\u00e9\u0159ov\u00fdch desk\u00e1ch!<\/p>\n
nab\u00edz\u00edme komponenty ze slinut\u00e9ho karbidu k\u0159em\u00edku (SiC) r\u016fzn\u00fdch tvar\u016f, velikost\u00ed a konfigurac\u00ed, kter\u00e9 spl\u0148uj\u00ed n\u00e1ro\u010dn\u00e9 podm\u00ednky v leteck\u00e9m pr\u016fmyslu, chemick\u00e9 v\u00fdrob\u011b, v\u00fdrob\u011b pap\u00edru a energetick\u00fdch technologi\u00edch. SiC je zn\u00e1m\u00fd pro svou vynikaj\u00edc\u00ed odolnost proti ot\u011bru a korozi, jako\u017e i odolnost proti tepeln\u00fdm \u0161ok\u016fm a opot\u0159eben\u00ed - vlastnosti, kter\u00e9 jej \u010din\u00ed vhodn\u00fdm pro n\u00e1ro\u010dn\u00e9 podm\u00ednky, jako je leteck\u00fd pr\u016fmysl.<\/p>\n
SiC lze vyr\u00e1b\u011bt bu\u010f slinov\u00e1n\u00edm, nebo reak\u010dn\u00edm spojov\u00e1n\u00edm, p\u0159i\u010dem\u017e ob\u011b metody v\u00fdrazn\u011b m\u011bn\u00ed jeho mikrostrukturu a vlastnosti po dokon\u010den\u00ed. Sp\u00e9kan\u00fd SiC se vyr\u00e1b\u00ed sp\u00e9k\u00e1n\u00edm \u010dist\u00e9ho pr\u00e1\u0161ku SiC s pomocn\u00fdmi sp\u00e9kac\u00edmi l\u00e1tkami bez oxid\u016f p\u0159i vysok\u00fdch teplot\u00e1ch (2 000 stup\u0148\u016f C) v inertn\u00ed atmosf\u00e9\u0159e za pou\u017eit\u00ed b\u011b\u017en\u00fdch keramick\u00fdch tv\u00e1\u0159ec\u00edch technik. U reak\u010dn\u011b v\u00e1zan\u00e9ho SiC se do kompakt\u016f sm\u011bs\u00ed slo\u017een\u00fdch z \u010d\u00e1stic SiC i uhl\u00edku p\u0159id\u00e1v\u00e1 kapaln\u00fd k\u0159em\u00edk, aby se spojily do podoby, kter\u00e1 se b\u011b\u017en\u011b ozna\u010duje jako \u010dern\u00fd karbid k\u0159em\u00edku.<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
Silicon Carbide (SiC) behaves much like diamond, being one of the lightest, hardest, and strongest advanced ceramic materials available today. […]<\/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-110","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\/110","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=110"}],"version-history":[{"count":4,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts\/110\/revisions"}],"predecessor-version":[{"id":200,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts\/110\/revisions\/200"}],"wp:attachment":[{"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/media?parent=110"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/categories?post=110"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/tags?post=110"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}